Pitt | Swanson Engineering
News Listing

Jul

Jul
7
2020

Two Pitt Researchers Receive Manufacturing Innovation Challenge Funding for COVID-19 Response

Covid-19, MEMS

PITTSBURGH (July 7, 2020) — COVID-19 has spurred research partnerships across sectors and industries. Two University of Pittsburgh Swanson School of Engineering faculty members, who are partnering with Pennsylvania companies, have recently each received $25,000 in funding from Pennsylvania’s Manufacturing PA Innovation Program COVID-19 Challenge to continue addressing the state’s response to the COVID-19 pandemic. As the pandemic spread, the N95 masks—which include respirator filters that block out contaminants like the virus that causes COVID-19—were increasingly difficult to find. Xiayun Zhao and Markus Chmielus, assistant professors of mechanical engineering and materials science (MEMS) at Pitt, both received funding for their projects developing alternative, reusable filters for N95 masks. “The response by the MEMS Department in aiding to address needs during this COVID-19 pandemic has been impressive, and I particularly applaud the efforts of Professors Zhao and Chmielus who are applying their expertise in advanced manufacturing in this response," said Brian Gleeson, Harry S. Tack Chair Professor of MEMS. Zhao is partnering with Du-Co Ceramics Company on a project entitled “Rapid Manufacturing of Polymer-Derived Ceramic Films for Respirators.” This partnership will use polymer-derived ceramics (PDCs) to create ceramic filter films for N95 masks. The project will take advantage of photopolymerization-based additive manufacturing to rapidly create reusable and sterilizable ceramic filters. Chmielus is working with the ExOne Company on a reusable N95 filters that uses metal binder-jet 3D printing. ExOne’s binder jetting technology is a high-speed form of 3D printing that can produce metal parts with specific porosity levels that can effectively filter out contaminants while allowing airflow. The reusable copper and stainless-steel filters are being designed to fit into a respirator cartridge for sustainable, long-term protection. Zhao and Chmielus are part of the University of Pittsburgh Center for Advanced Manufacturing (UPCAM) Materials Engineering and Processing group, which “supports fundamental research addressing the interrelationship of materials processing, structure, properties and/or life-cycle performance for targeted applications,” according to the website.
Maggie Pavlick
Jul
2
2020

The Department of Energy Awards $1.9M to Swanson School Faculty and Students for Nuclear Energy Research

Electrical & Computer, MEMS, Student Profiles, Nuclear

PITTSBURGH (July 2, 2020) … Humankind is consuming more energy than ever before, and with this growth in consumption, researchers must develop new power technologies that will address these needs. Nuclear power remains a fast-growing and reliable sector of clean, carbon-free energy, and four researchers at the University of Pittsburgh received awards to further their work in this area. The U.S. Department of Energy (DOE) invested more than $65 million to advance nuclear technology, announced June 16, 2020. Pitt’s Swanson School of Engineering received a total of $1,868,500 in faculty and student awards from the DOE’s Nuclear Energy University Program (NEUP). According to the DOE, “NEUP seeks to maintain U.S. leadership in nuclear research across the country by providing top science and engineering faculty and their students with opportunities to develop innovative technologies and solutions for civil nuclear capabilities.” “Historically, our region has been a leader in the nuclear energy industry, and we are trying to keep that tradition alive at the Swanson School by being at the forefront of this field,” said Heng Ban, Richard K. Mellon Professor of Mechanical Engineering and director of the Swanson School’s Stephen R. Tritch Nuclear Engineering Program. “I’m thrilled that the Department of Energy has recognized the innovative work from our faculty, and I look forward to seeing the advancements that arise from this research.” The DOE supported three projects from the Swanson School. High Temperature Thermophysical Property of Nuclear Fuels and MaterialsPI: Heng Ban, Richard K. Mellon Professor of Mechanical Engineering, Director of Stephen R. Tritch Nuclear Engineering Program$300,000 Ban, a leading expert in nuclear material thermal properties and reactor instrumentation and measurements, will use this award to enhance research at Pitt by filling an infrastructure gap.  He will purchase key equipment to strengthen core nuclear capability in the strategic thrust area of instrumentation and measurements. A laser flash analyzer and a thermal mechanical analyzer (thermal expansion) will be purchased as a tool suite for complete thermophysical property information. Fiber Sensor Fused Additive Manufacturing for Smart Component Fabrication for Nuclear Energy PI: Kevin Chen, Paul E. Lego Professor of Electrical and Computer EngineeringCo-PI: Albert To, William Kepler Whiteford Professor of Mechanical Engineering and Materials Science$1,000,000 The Pitt research team will utilize unique technical capabilities developed in the SSoE to lead efforts in sensor-fused additive manufacturing for future nuclear energy systems. Through integrated research efforts in radiation-harden distributed fiber sensor fabrication, design and optimization algorithm developments, and additive manufacturing innovation, the team will deliver smart components to nuclear energy systems to harness high spatial resolution data. This will enable artificial intelligence based data analytics for operation optimization and condition-based maintenance for nuclear power systems. Multicomponent Thermochemistry of Complex Chloride Salts for Sustainable Fuel Cycle TechnologiesPI: Wei Xiong, assistant professor of mechanical engineering and materials scienceCo-PIs: Prof. Elizabeth Sooby Wood (University of Texas at San Antonio), Dr. Toni Karlsson (Idaho National Laboratory), and Dr. Guy Fredrickson (Idaho National Laboratory)$400,000 Nuclear reactors help bring clean water and reliable energy to communities across the world. Next-generation reactor design, especially small modular reactors, will be smaller, cheaper, and more powerful, but they will require high-assay low-enriched uranium (HALEU) as fuel. As the demand for HALEU is expected to grow significantly, Xiong’s project seeks to improve the process of recovering uranium from spent nuclear fuels to produce HALEU ingots. Part of the process involves pyrochemical reprocessing based on molten salt electrolysis. Hence, developing a thermodynamic database using the CALPHAD (Calculation of Phase Diagrams) approach to estimate the solubilities of fission product chloride salts into the molten electrolyte is essential for improving the process efficiency. The results will help in estimating the properties that are essential for improving the HALEU production and further support the development of chloride molten salt reactors. Two Swanson School students also received awards from NEUP. Jerry Potts, a senior mechanical engineering student, received a $7,500 nuclear energy scholarship, one of 42 students in the nation. Iza Lantgios (BS ME ‘20), a matriculating mechanical engineering graduate student, was one of 34 students nationwide to be awarded a $161,000 fellowship. Swanson School students have secured 20 NEUP scholarships and fellowships since 2009. # # #

Jun

Jun
30
2020

Is Remote Work Helping to Keep Air Pollution at Bay?

Covid-19, MEMS

In March 2020, much of the country felt like it came to a standstill: People were not commuting to and from work or class, traveling to conferences, or going on vacations. All but the most essential businesses and manufacturers shut their doors, major events were canceled, and people stayed at home. There was one other big change: The air got better. Katherine Hornbostel (Credit: Ramon Cordero) In Pittsburgh, the Group Against Smog and Pollution reported particulate matter concentrations were 23 percent lower than expected since stay-at-home orders took effect. Nitrogen dioxide pollution over northern China, Western Europe and the U.S. decreased by as much as 60 percent in early 2020 compared to the previous year. Now, as businesses begin to reopen and life seeks a new normal, what will happen to those remarkable gains in air quality? And what can any of us do about it? Katherine Hornbostel, assistant professor of mechanical engineering and materials science at University of Pittsburgh’s Swanson School of Engineering, has a few suggestions. Her research focuses on carbon capture technology: novel ways to remove carbon dioxide, one of the biggest drivers of air pollution and climate change, from the air and water. “The fact that our air has improved since the shutdown makes perfect sense. Some of the biggest contributors to air pollution—flying and driving—have declined dramatically,” said Hornbostel. “Companies shutting down also improved air quality because they stopped emitting carbon dioxide and other pollutants.” Though research suggests the air quality gains the COVID-19 pandemic brought with it are likely to dissipate as business resumes and factories work overtime to make up for lost time, Hornbostel notes that the air quality improvement proved that we can make a difference relatively quickly. As the economy reopens, Hornbostel recommends three changes to help keep our air clean: 1. Remote Work Global Workplace Analytics estimated that 56 percent of the U.S. workforce holds a job that is compatible with remote work. One of the most obvious ways to protect our air long-term, Hornbostel suggests, is for employers to allow their employees to continue working from home in the future. “Remote work is an obvious way to cut emissions because people won’t have to drive so much. If companies adopt more flexible policies about employees working from home full- or part-time, it could make a big difference for the environment,” she said. Since the stay-at-home order took effect in Allegheny County, for example, traffic on the Parkway East was reduced so much that air particulates were 13 percent below normal. “Moving forward, I would love to see companies adopt a more flexible stance towards remote work. Not only will this help the environment, it will also prevent employee burnout and instill a culture of work-life balance.” 2. Find Ways Around Business Travel People whose jobs rely on frequent travel have found new ways of operating during the COVID-19 pandemic. That is a good thing, Hornbostel said. The less flying we do, the better, as air travel is responsible for 2.5 percent of global carbon dioxide emissions. “I think a lot of people are discovering that we don’t really need to travel as much as we do,” she said. “Virtual conferences and meetings are often perfectly adequate substitutes for traveling to a remote site. I’d love to see more conferences and workshops go virtual or at least offer a virtual option for participants who don’t wish to travel.” 3. Explore Your Own Backyard Cutting air travel’s large carbon footprint is a difficult task. However, this pandemic has proven that people are capable of getting by without getting on an airplane. Vacations to remote destinations used to be common for many Americans, but the pandemic forced us to make new plans and get creative with how we entertain ourselves and our children. Like many, Hornbostel found herself working from home while homeschooling small children. “I think we were all sort of living a frantic life before this pandemic hit, and after being forced to slow down, a lot of people are realizing how exhausting and unsustainable their previous lifestyle was,” she said. “As I’ve reflected on this change of pace and observed my children’s response to it, I’ve come to realize how much we all benefit from spending more time together at home. My kids don’t need to go to Disney World to be happy; they can still find joy by going to the park down the street. “Staying local can be fun. Staying home can be fun,” she said. “Do we really need to resume our frantic lives, or can we slow things down a bit?”
Maggie Pavlick
Jun
25
2020

Making a Sustainable Impact Throughout Pitt and Our Communities

All SSoE News, Bioengineering, Chemical & Petroleum, Civil & Environmental, Electrical & Computer, Industrial, MEMS, Student Profiles, Office of Development & Alumni Affairs

"MCSI remains committed to addressing global sustainability issues, connecting our domestic and international pursuits to create synergies locally, nationally, and internationally. We hope you enjoy this summary of the past year’s impacts, and we'd be happy to answer any questions you might have about the report's contents and MCSI's programs."

Jun
23
2020

Five Pitt Researchers Receive PA Department of Community and Economic Development Grants

Electrical & Computer, MEMS

PITTSBURGH (June 23, 2020) — Five researchers at the University of Pittsburgh Swanson School of Engineering have received grants from the Pennsylvania Department of Community and Economic Development (DCED) through the Manufacturing PA initiative. The DCED has approved more than $2.8 million in grants to 43 projects that will “spur new technologies and processes in the manufacturing sector,” according to their press release. “As engineers, we are applied scientists, and our singular goal in performing research is to produce public impact,” said David Vorp, associate dean for research and John A. Swanson Professor of bioengineering. “I am proud that the Commonwealth of Pennsylvania saw the potential of these projects by our Swanson School faculty and their industrial partners to have benefit to their citizens.” The five researchers to receive funding at the Swanson School are: Kevin Chen, Paul E. Lego Professor of Electrical and Computer Engineering$67,991—Femtosecond Laser Manufacturing of 3D Photonics Components in Nonlinear Optical Substrates for Electro-Optic Applications Markus Chmielus, associate professor of mechanical engineering and materials science$70,000—Improving 3D Binder Jet Printed Tungsten-Carbide Parts via Strategies to Increase Green Density and Strength Jung-Kun Lee, professor of mechanical engineering and materials science$70,000—Smart Crucible: Monitoring Damage of Crucibles by Embedded Electric Resistance Sensor Albert To, associate professor of mechanical engineering and materials science$69,450—A Computational Tool for Simulating the Sintering Behavior in Binder Jet Additive Manufacturing Xiayun Zhao, assistant professor of mechanical engineering and materials science$70,000—Pushing the Boundaries of Ceramic Additive Manufacturing (CAM) with Visible light initiated Polymerization (ViP)
Maggie Pavlick
Jun
15
2020

A Raft That Won’t Save You

Covid-19, MEMS

PITTSBURGH (June 15, 2020) — A cell’s membrane acts as a natural shield, a fence around the cell that protects and contains it. It mediates processes that let nutrients through and let waste out, and it acts as a physical barrier to the entry of toxic substances and pathogens, like the viruses SARS-CoV-1 and SARS-CoV-2, the one that causes COVID-19. Such pathogens, however, employ clever strategies to trick and penetrate the cell, thereby replicating themselves and infecting the human body. The virus deceives the membrane by exposing specific anti-receptors to which suitable cell's receptors normally bind. The virus tricks the receptors into believing that what’s landing is something else, namely an affine ligand, something that is safe. Such a process activates and grows thickened zones along the cell membrane, or "lipid rafts,” which are more likely to permit the virus to alter the cell’s membrane, yielding its entry into the cell. New interdisciplinary research published in the Journal of the Mechanics and Physics of Solids sheds light on how and why the cell membrane forms and grows lipid rafts triggered by ligand-receptor activity. The work could lead to new strategies and innovative approaches to prevent or fight the action of the virus through the integration of biomedical and engineering knowledge. “Although lipid rafts’ influence on a cell’s response to external agents has been deeply investigated, the physical components of what takes place during ligand-binding has not yet been fully understood,” said Luca Deseri, research professor at the University of Pittsburgh’s Swanson School of Engineering in the Mechanical Engineering and Materials Science Department, full professor and head of the graduate school in Engineering at DICAM-University of Trento in Italy, and corresponding author on the paper. “Our team used an interdisciplinary approach to better understand why active receptors tend to cluster on lipid rafts. More importantly, we confirm and predict the formation of the complex ligand receptors.” Through the studies of how mechanical forces and biochemical interactions affect the cell membrane, this research sheds light on the way localized thickening across cell membranes is triggered by the formation of the ligand-receptor complex. The researchers concluded that the formation of ligand-receptor complexes could not take place in thinner zones of the cell membrane; the thickening of the cell membrane provides the necessary force relief to allow for configurational changes of the receptors, which then become more prone to ligand binding Understanding the way viruses use lipid rafts to alter the cell wall could lead to new approaches to treat and prevent viruses, like the one that causes COVID-19, from spreading in the body. The work is a joint effort between Deseri, Massimiliano Fraldi, full professor of solid and structural mechanics at the University of Naples-Federico II in Naples, Italy, and Nicola M. Pugno, full professor of solid and structural mechanics at DICAM-University of Trento. The research was also co-authored by researchers from Carnegie Mellon University, from the University of Palermo, and from the University of Ferrara, where the experiments on the cells were performed. The paper, “Mechanobiology predicts raft formations triggered by ligand-receptor activity across the cell membrane,” (DOI: 10.1016/j.jmps.2020.103974) was published in the Journal of the Mechanics and Physics of Solids. It was authored by Angelo R. Carotenuto, Laura Lunghi, Valentina Piccolo, Mahnoush Babaei, Kaushik Dayal, Nicola M. Pugno, Massimiliano Zingales, Luca Deseri and Massimiliano Fraldi. The researchers will submit related work to the Frontiers in Materials as part of a special issue, edited by Pugno, about the COVID-19 pandemic.
Maggie Pavlick
Jun
11
2020

Open Position: Postdoctoral Researcher - In situ Nanomechanics

MEMS, Open Positions

There is an opening for a postdoctoral researcher in the research group of Prof. Tevis Jacobs in the Department of Mechanical Engineering and Materials Science at the University of Pittsburgh. The research will investigate atomic-scale processes governing the mechanics of materials and interfaces at the nanoscale. Mechanical testing of nanoparticles will be performed in a transmission electron microscope (TEM) using a cutting-edge in situ nanomanipulator apparatus. The work will also involve atomic-resolution imaging and analysis of materials, as well as post-processing using numerical routines (e.g., in Matlab) to extract quantitative measurements of material response. Candidates must have a PhD in materials science, mechanical engineering, or a closely related field. Demonstrated expertise with electron microscopy is required; direct experience with in situ TEM is preferred. Also desirable, though not required, is experience with mechanical testing as well as the topic of mechanical behavior of materials (theory and application). The successful candidate should be highly motivated and able to work independently. This position will also include mentorship of graduate and undergraduate students, presentations at international conferences, and the writing of publications for peer-reviewed scientific journals. To apply, please send an email to tjacobs@pitt.edu with the subject line: Application for Nanomechanics Postdoc. Attached to the email should be a single PDF file containing a CV, copies of two relevant publications, and the names and contact information for three references. Review of applications will begin on June 30th, 2020 and continue until the position is filled. The University of Pittsburgh is an Affirmative Action / Equal Opportunity Employer and values equality of opportunity, human dignity, and diversity. EEO/AA/M/F/Vets/Disabled.

Jun
1
2020

MEMS Students Receive Department of Energy Awards

MEMS, Student Profiles

Two outstanding MEMS students were recently awarded a scholarship and fellowship from the Department of Energy (DOE). The awards are a part of an annual program sponsored by the Nuclear Energy University Program (NEUP). The recipients: Jerry Potts, a mechanical engineering senior, won a $7,500 scholarship designated to help cover education costs for the upcoming year. This summer, Potts is interning with the National Renewable Energy Laboratory (NREL) located in Golden, Colorado. Iza Lantgios Iza Lantgios, a second year mechanical engineering PhD student, won a $150,000 graduate fellowship for three years.  The fellowship also includes $5,000 to fund an internship at a U.S. national laboratory or other approved research facility. Lantgios is conducting research this summer while exploring topics for her thesis. Since 2009, the DOE has awarded over $44 million to students pursuing nuclear energy-related degrees.  This year, more than $5 million was awarded nationally to 42 undergraduates and 34 graduate students from 32 colleges and universities. This is the second consecutive year MEMS students were selected for these awards.

May

May
26
2020

MEMS Faculty Member is Lead Author on Quantum Computing Article Published by NASA

MEMS

Dr. Peyman Givi, mechanical engineering Distinguished Professor, is the lead author on a recently published National Aeronautics and Space Administration (NASA) Technical Memorandum (TM).  The TM explains how quantum computers can be utilized for computational modeling and simulations. It is theorized that quantum computers will be able to conduct calculations in seconds for problems that take the current (classical) world’s largest supercomputers months to compute.  The TM details the current state of progress in quantum computing technology and how NASA and the aerospace community could potentially use this technology to perform large scale computations. Givi said he is honored to be a co-author on such an important report, noting that his collaborators are among the world’s leading researchers in quantum physics and computational fluid dynamics. He is excited to continue research in this area, stating that “the potential power of quantum computers in near-future computations is mind blowing.” The authors have been asked to publish this report as a Invited Article in the AIAA Journal.
Meagan Lenze
May
14
2020

Start Your Engines! And Don’t Neglect Your Vehicle

Covid-19, MEMS, Student Profiles

The stay-at-home orders during the coronavirus pandemic have left many personal vehicles unattended in garages or parked along the side of the road. If you don’t want to be among the growing number of customers calling roadside assistance services, take heed of some advice from the Swanson School of Engineering’s Panther Racing student group. “Typically in vehicles, the first thing to fail during a period of unuse is the battery,” explained Bryce Merrill, a rising senior mechanical engineering student and executive director of Panther Racing (Pitt FSAE). “Batteries will lose charge over time regardless, but any small electrical draw on the battery will cause this to happen faster.” He recommends periodically driving your car to charge the battery or installing a trickle charger to top off the battery when it gets too low. “Starting your car occasionally and driving around the block or so is good for a few other reasons as well,” said Merrill. “It gives all the moving components a chance to get lubricated, gets the fluids flowing, and will remove corrosion from your brake rotors.” Word to the wise for folks in areas, like Pittsburgh, where the temperature can fluctuate more than twenty degrees in one day: check your tire pressure, too. “It is also important to check your tire pressure occasionally as they will slowly leak air and can develop flat spots if they sit in the same spot and the pressure drops too much,” said Merrill. These failures, however, aren't what sidelined their student-designed-and-built formula race car. Rather, it was the campus closure in response to the COVID-19 pandemic. Unfortunately, Panther Racing has been forced to put the completion of PR-032, this year's race car, on hold due to restrictions on group gatherings and the closing of the University. “This year's FSAE in-person competitions have been migrated to a virtual competition that will occur in early June,” said Merrill. “The team has stayed busy preparing for this virtual competition, planning for next year's car, and has taken this time to focus on education and knowledge transfer.” The group, like many others, has stayed connected through Zoom. A Panther Racing alumnus has held seminars about engine tuning, and they plan to hold additional seminars with other team alumni. “It is extremely disappointing to all of us to not have the opportunity to finish what we have worked so hard for all year, but we are taking this as a learning opportunity to design and manufacture a better car next year,” he said. “We will soon begin the design process for PR-033 remotely, to stay on schedule to complete it by this time next year. We also hope to finish PR-032 in time to compete at our annual Pittsburgh Shootout on August 1st at Pittsburgh International Raceway.” # # #

May
11
2020

Working Through Crisis

All SSoE News, Covid-19, MEMS, Student Profiles

COVID-19 has left the University and world at large in an unprecedented situation. This situation introduced many new challenges for all, including how to adapt classes such as Senior Design, which is largely based on teamwork, to a remote setting. In addition to the normal challenges and problem solving nature of a given course, the stay-at-home order created an added challenge for this semester’s Senior Design teams; how to reclaim a project in the middle of the semester when you are no longer able to come to campus. One team was able to engineer a creative solution.  The team’s sponsor is Abram’s Nation. They produce hospital bed equipment, and due to their essential status, they are still open for business during this time.  Abram’s Nation is a long-time partner and friend of the University of Pittsburgh, particularly the Swanson School of Engineering. Abram's Nation makes medical-grade safety beds that provide those with special needs or dementia a safe and fully enclosed sleeping space. Their current product line under The Safety Sleeper® brand is designed to keep the occupant safe from night wandering and reduce risks from uncontrolled movement, falls, and self-harming behavior such as headbanging. The current model of The Safety Sleeper is effective for regular mattresses and has a rigid frame. This frame imposes limitations on where the current design can be used. In 2019, Abram’s Nation completed an internal design and process overhaul of their main product lines. It was here the company realized there was a need to create a device compatible with an articulating base bed. Craig Van Korlaar, Director of Operations at Abram’s Nation was the design team’s point of contact.  He said, “We hope to bring an articulating model to market in late 2020/early 2021, but also knew that we did not have the skills or capacity to accomplish the frame design on our own. By once again partnering with Pitt on the frame, we have been able to stay on track with this timeline.” 3D model of the team’s design. The senior design team’s original goal was to expand on the current model of The Safety Sleeper to create a product capable of interfacing with hospital and facility beds. The results were planned to be a full-scale prototype, fitting the dimensions of the bed and to be able to handle the articulation of the bed without sacrificing the integrity of The Safety Sleeper enclosure. Early into the project, the team ran into its first challenge. Due to legal issues, the team was unable to see a hospital bed and acquire the necessary measurements until five weeks into the semester. So instead, the team worked from an articulating bed frame supplied by Abram’s Nation located at the company’s manufacturing facility. Team coordinator and ME major, Matthew Warner explains, “This bed-frame is meant for households, so it has very little resemblance to a hospital bed. It does, however, possess a level of articulation similar to that of a hospital bed, so our design will serve as a basis for the final product meant to integrate with a hospital bed.” Pre-shutdown, Van Korlaar and his colleagues at Abram’s Nation were very pleased with the design team’s progress. They were at the stage of testing their initial prototype. While this frame prototype worked as intended, it became clear there were issues with the enclosure's ability to adapt to the different positions that placed excess forces on the frame. While these weak points had been anticipated and were planned to be addressed in the revised model, there was enough concern to warrant a complete redesign. This led the team to pivot to an alternative design using a fixed frame surrounding an independently articulating platform.  Van Korlaar said, “This pivot is a better solution in the long run as it addresses all of the enclosure issues we encountered and allows the articulating platform to hold all the occupant's weight instead of some of it transferring to the frame itself.” The team and Craig Von Korlaar discussing their project over Zoom. Then, over spring break, the team faced its second major challenge when the announcement came from the University that facilities were shutting down and students were advised not to return to campus. Warner said his team’s in-person meetings transitioned to online Zoom meetings, which was sufficient for some aspects of the project, but became an issue when brainstorming ideas for the new design. Warner made a rough 3D model of the intended design using Paint 3D. Through screen sharing, the team then used the annotation tools on Zoom to draw on the model to better convey ideas. Prior to spring break, the design team was using the Swanson Center for Product Innovation (SCPI) to fabricate custom parts for their design and had access to Abram’s Nation production facility. Since Abram’s Nation manufactures their current products internally, they would cut the sections of aluminum tubing the team needed in-house using schematics the team provided the company with. Matt Warner creating parts for the new Safety Sleeper design at home. Luckily, Warner’s father has a machine shop at home with a 3D printer. So, Warner began producing custom parts for the new design at home and shipping them to Abram’s Nation, who are currently operating with a skeleton crew. The team at Abram’s Nation is, “...able to cut the sections of tubing that we require, as well as assemble and test the new physical prototype themselves with instructions from our group” says Warner. As a side note, Abram’s Nation has textile equipment and material that they use to make the fabric and mesh enclosures on their current product, so with some retooling they have been producing face masks for the University of Pittsburgh Medical Center (UPMC) during the pandemic. The design team is disappointed there will not be a Senior Design Expo this year to present their work.  However, learning to overcome the various challenges they faced proved to be a valuable experience. Warner says, “One of the biggest learning points from this experience for me was that it really showed just how valuable in-person communication can be while brainstorming ideas. While it is very much possible to convey these ideas through an online, digital medium, nothing beats a pen and paper or a marker and a whiteboard.” Dr. David Schmidt, the Senior Design course instructor, notes, “The team’s effort and initiative exemplifies the spirit of ownership students develop during their capstone experience.” Warner and Van Korlaar remained in daily contact with one another throughout the project, with updates on design and fabrication processes and discussing key decisions for the project. Despite some initial skepticism about the ability to complete the project, the team remained dedicated to their goals. The team is grateful to Abram’s Nation for remaining a professional partner despite the ongoing changes within their company, and for maintaining contact and providing helpful input and feedback when needed. Likewise, Van Korlaar speaks very highly of Warner and the rest of the team, noting the initiative and work ethic of the group despite the challenges they have faced. He says, “I was blown away with the final delivery package, which was of higher quality and thoroughness than what I've seen from some established engineering firms.” Van Korlaar is already looking forward to partnering with another group of Pitt students this fall to tackle their next project.
Meagan Lenze
May
8
2020

MEMS Faculty Member Elected to Canadian Academy of Engineering Fellows

MEMS

Scott Mao, the John A. Swanson Professor of Mechanical Engineering and Materials Science, was recently elected Fellow of the Canadian Academy of Engineering (CAE). Mao is one of 50 highly accomplished individuals selected from a competitive nomination and selection process this year and was chosen in recognition of his outstanding contributions in fracture and mechanical behavior of materials, leading to significant progress and breakthroughs in the damage evaluation of engineering structures. He was nominated by Dr. David S. Wilkinson, Distinguished University Professor at McMaster University in Hamilton, Ontario. An induction dinner for new fellows is typically held at the AGM Technical Symposium in June. This will be a virtual event this year with plans to postpone the in-person event to 2021.
Meagan Lenze

Apr

Apr
27
2020

ExOne and Pitt Collaborate to Produce Promising Reusable Respirators with 3D Printed Metal Filters

Covid-19, MEMS, Office of Development & Alumni Affairs

News release originally published by ExOne. Reposted with permission. PITTSBURGH (April 27, 2020) ... The ExOne Company and the University of Pittsburgh have partnered to develop reusable metal filters that fit into a specially designed respirator cartridge for sustainable, long-term protection against contaminants, such as COVID-19. ExOne’s binder jetting technology is a high-speed form of 3D printing that can produce metal parts with specific porosity levels that can effectively filter out contaminants while allowing airflow. ExOne has 3D printed respirator filters in two metals — copper and 316L stainless steel — and a range of porosity levels for use inside a unique cartridge designed by the Mechanical Engineering & Materials Science department in Pitt’s Swanson School of Engineering. Initial testing for airflow and filtration efficiency is currently underway, and the filters are being optimized with the goal of adhering to an N95 respirator standard. “Our team has been working urgently to expedite this promising and reusable solution for medical personnel on the frontlines of fighting the COVID-19 pandemic,” said John Hartner, ExOne CEO. “Our customers routinely print porous metal filters for a variety of purposes, and we are confident that we’ll have a solution soon that can enable medical personnel to sterilize metal filters for repeated reuse, eliminating waste. Once approved, we can print these filters in a variety of sizes for respirators, ventilators, anesthesia masks or other equipment.” “The advantage of binder jet 3D printing over other additive manufacturing methods for this filter application is the ability to utilize the porosity of the printed part and then fine tune it during the high temperature densification or sintering process to achieve optimum filtering and airflow performance,” said Markus Chmielus, Associate Professor of Mechanical Engineering and Materials Science at the Swanson School. 3D Printed Metal Filter Project Details ExOne’s binder jetting technology uses an industrial printhead to selectively deposit a liquid binder onto a thin layer of powdered material, layer by layer, until a final object is formed. After 3D printing powdered metals, the object is then sintered in a furnace to dial in a specific level of porosity. While binder jetted metal is typically sintered to full density, some applications require a specific level of porosity, such as filters. To test filters in different metals and porosities, Dr. Chmielus’ research group is using CT scanners to analyze the microstructure and porosity of the filters. Ansys, the global leader in engineering simulation, also based near Pittsburgh, is providing additional computer simulation support to analyze and optimize the performance of the filters. While copper and stainless steel filters are currently being tested, copper has been known to have antibacterial properties since ancient times. The first recorded use of copper to kill germs was in the Edwin Smith Papyrus, the oldest known medical document in history, according to the Smithsonian. Many studies have proven copper’s disinfectant powers. One landmark 2015 study, funded by the Department of Defense, revealed that copper alloys contributed to a 58% reduction in infections. COVID-19 research also suggests the virus dies faster on copper than on other surfaces. ###
Author: Sarah Webster, ExOne Global Marketing Director
Apr
20
2020

Twelve Pitt Students Awarded 2020 National Science Foundation Graduate Research Fellowships

All SSoE News, Bioengineering, Chemical & Petroleum, Electrical & Computer, MEMS

PITTSBURGH (April 20, 2020) … Twelve University of Pittsburgh students were awarded a 2020 National Science Foundation Graduate Research Fellowship. This is the highest number of students to receive this competitive award since 2015 when the University had a total of 13 recipients. An additional sixteen Pitt students also earned an honorable mention. For the past two years, the University’s Honors College has been working with the Office of the Provost to host informational workshops and boost participation in the fellowship program. Patrick Loughlin, professor of bioengineering, also holds workshops in the Swanson School of Engineering to encourage graduate students to apply to external fellowships. The NSF Graduate Research Fellowship Program (GRFP) is designed to ensure the vitality and diversity of the scientific and engineering workforce in the United States. GRFP supports the graduate study of U.S. citizens, nationals and permanent residents attaining research-based master's and doctoral degrees in science, technology, engineering and mathematics (STEM) or in STEM education at institutions located in the United States. Fellows receive a three-year annual stipend of $34,000 as well as a $12,000 cost-of-education allowance for tuition and fees. Four Swanson School students and three alumni are among this year’s cohort. Three current students and three alumni received honorable mentions. Award Recipients Janet Canady, a bioengineering undergraduate, works in Dr. George Stetten’s lab where she helps design and test FingerSight, a device for the visually impaired. Zachary Fritts, a bioengineering undergraduate, works in Dr. Tamer Ibrahim’s lab where he helps design and build multi-channel transmit arrays for ultra-high field magnetic resonance imaging (MRI). Brian Gentry, a mechanical engineering undergraduate, works in Dr. John Keith’s lab where he investigates local solvent effects on density functional theory energy calculations applied to a class of organic compounds called chelating agents. Evan Miu, a chemical engineering graduate student, works with Drs. James R. McKone and Giannis Mpourmpakis. His research explores combined thermo- and electro-catalytic processes through experimental electrochemistry and density functional theory. Honorable Mentions Evan Becker, an electrical and computer engineering undergraduate, works in Dr. Natasa Miskov-Zivanov’s lab where he has designed representation schemes for modeling and simulating dynamic behavior in systems such as intracellular networks and geopolitical systems. Dr. Miskov-Zivanov’s lab uses discrete logic techniques, allowing him to rapidly assemble these models from scientific literature. Alexander Maldonado, a chemical engineering graduate student, works in Dr. John Keith’s lab to develop novel ways to accurately and quickly predict how complicated chemical reactions occur in solvents using state-of-the-art quantum chemistry and machine learning. Jordyn Ting, a bioengineering graduate student, works in the Rehab Neural Engineering Labs with Dr. Douglas Weber where her work focuses on investigating the spared connection between the motor cortex and muscles. Swanson School alumni Kiara Lee (BioE, Brown University), Harrison Douglas (ChemE, Michigan State University) and Katarina Klett (BioE, Stanford University) also received awards. The alumni to receive honorable mentions include Katreena Thomas (IE, Arizona State University), Richard Hollenbach (MEMS, Duke University) and Arjun Acharya (BioE, University of Utah). # # #

Apr
15
2020

Peering Into Undergraduate Research at Pitt: Swanson School of Engineering Publishes Sixth Edition of Ingenium

All SSoE News, Bioengineering, Chemical & Petroleum, Civil & Environmental, Electrical & Computer, Industrial, MEMS, Student Profiles

PITTSBURGH (April 15, 2020) … Demonstrating the diverse and exceptional undergraduate research in the University of Pittsburgh Swanson School of Engineering, Associate Dean for Research David A. Vorp recently released the sixth edition of Ingenium. This edition features a collection of 26 articles that highlight work performed throughout the 2019-20 academic year and during the school’s 2019 summer research program. Ingenium mirrors the peer-review process of scientific journals by inviting undergraduate researchers to submit manuscripts to a board of graduate students. The review board provides feedback to which the undergraduates are required to respond before their work is accepted. The co-editors-in-chief for this edition were Monica Liu, a bioengineering graduate student, and Jianan Jian, an electrical and computer engineering graduate student. “I think Ingenium is a great experience for undergraduates,” said Liu. “They have been diligently working on research all year, and Ingenium is a great way for them to present it to a larger audience and get experience writing a scientific paper.” While the publication is designed to help prepare undergraduates, members of the graduate review board also benefit from a different point of view in the academic writing process. “Graduate students spend so much time writing about their research and incorporating feedback,” said Liu. “Ingenium is a great way to experience the other side of things -- taking the time to review others' work gives us a broader perspective when we review our own work.” Ingenium features research from each department in the Swanson School and is divided into five categories: experimental research, computational research, device design, methods, and review. The publication is sponsored by the school’s Office of Research. “With each year and with each edition of Ingenium, we continue to see notable and impressive academic and professional growth and development in our undergraduate students when given opportunities to engage in scientific research,” said Vorp. “We witness students taking the knowledge, skills, and information that they learn in their coursework and apply it in a meaningful and intentional manner outside of the classroom. These thriving students are our future -- of both our highly accredited institution and our world.” ###

Apr
7
2020

Pitt Makerspace Creates Open Source Face Shield to Fill Local PPE Need

Covid-19, Bioengineering, MEMS, Student Profiles

PITTSBURGH (April 7, 2020) — The shortage of personal protective equipment (PPE) caused by the spread of the coronavirus has inspired a fleet of makers in the community to pitch in and make items like masks and face shields to be used in hospitals. The Pitt Makerspace at the University of Pittsburgh Swanson School of Engineering is no exception—a team there has partnered with a local printing company and the UPMC 3D Print Lab to create a single material plastic shield, and they have made the details free for anyone to use. The project was led by Brandon Barber, the design, innovation and outreach coordinator in the Department of Bioengineering at Pitt, and Dan Yates (BSME ’19), innovation project coordinator for the Pitt Makerspace. The Pitt team worked closely with Ken Mattheis and Steve Reed from the Pittsburgh-based printers Reed & Witting to develop the design, and they utilized input from medical professions to ensure the shields would meet their needs. Single material face shield on a mannequin head. The shields are made of a single piece of material and are then folded into place to form the shield; because of this, can be made with any thin, clear plastic and do not require any other materials, like foam or elastic. They were designed with high-volume die-cutting in mind, and many commercial print shops already have the equipment and materials to make thousands of these shields in a short period of time, according to Barber. Reed & Witting is set to make as many as 5,000 shields a day. “We were inspired to act when we saw the shortage of PPE in our community and realized how impactful something like this could be,” said Barber. “The Makerspace is all about finding innovative designs that positively influence the world around us, and we hope that’s what we have been able to do with this project.” You can find the open source face shield here. ### The Pitt Face Shield has not been medically certified for use as PPE. The creators make no warranties of any kind (express or implied) relating to accuracy, usefulness, usability, marketability, performance, or otherwise of the content release.

Mar

Mar
31
2020

Undergraduate Spotlight: Clement Ekaputra

MEMS, Student Profiles

When materials science senior Clement Ekaputra was a youth, he wanted to help rockets fly in space. In high school, he always enjoyed his science and math classes. For him, pursuing a degree in engineering seemed like a natural choice. “Coming into Pitt, I thought that developing materials that are lighter, stronger, and last longer would be the best way to get into aerospace” he said, “Materials science seemed like an interesting field.” So, in the fall of 2015, Ekaputra entered the Swanson School of Engineering at the University of Pittsburgh. He is now set to graduate this Spring with a bachelor’s degree in materials science in engineering and minors in math and French language. Ekaputra recalls one of the first classes he took his first semester at Pitt, honors calculus. He mentioned how challenging it was for him at first, but the passion and excitement from his professor, Dr. Chris Lennard, helped him to succeed.  He credits this success for giving him the confidence to believe he could succeed in all his future classes as well. However, it was a MEMS class, Mechanics of Materials with Professor Tevis Jacobs, which Ekaputra named his favorite.  He commented on Dr. Jacob’s ability to make the course engaging and interesting. Though he was already interested in solid mechanics previously, this course inspired him to pursue the field even further by choosing to study it in graduate school. Classes aren’t the only thing Ekaputra enjoys about Pitt, he is also involved in the Pitt table tennis team and handbell ensemble.  But most notably, Ekaputra is a pianist.  He started playing when he was 3 years old.  His parents saw his potential and enrolled him in lessons.  At first, Ekaputra admits that he did not enjoy his formal lessons and he hated practicing.  He says over time though, he grew to enjoy it more and has participated in quite a few performances and competitions. Ekaputra playing with the University of Pittsburgh Orchestra Now, playing the piano is mostly for relaxation. He says, “I find it incredibly fulfilling to learn how to play difficult pieces, in the same way that completing an engineering project or running a marathon is fulfilling.” Ekaputra takes lessons from Dr. Tina Faigen in Pitt’s Music Department. He says Dr. Faigen has greatly helped him to improve his skills and he has a great experience playing at Pitt (see link).  He also recently performed a concerto with the Pittsburgh Symphony Orchestra. While he no longer competes and does not intend to be a famous concert pianist, he does plan to continue playing the piano and would be interested in playing in church or with a choir someday. In addition to classes, clubs and hobbies, Ekaputra has gotten an ample amount of research experience during his time at Pitt too. He said he always knew that research was something he wanted to get involved with.  The summer after his freshman year, he worked for Dr. Albert To in a summer research program where he studied finite element modeling and topology optimization related to additive manufacturing. The following summer he took a position developing inexpensive sediment microbial fuel cells in his hometown near Philadelphia. This experience gave him the opportunity to travel to Indonesia to work on developing sustainable products using local agricultural waste. He was then given the opportunity to present his work at a conference. By his junior year, Ekaputra knew his area of interest lied in structural materials, so he began working in Dr. Isaac Garcia’s lab and completed his senior research project with him on iron alloys for jet turbine applications.  This past summer, he did a Research Experiences for Undergraduates (REU) program with Massachusetts Institute of Technology (MIT). Ekaputra notes that internships and co-op experiences are two of the most defining parts of his experience at Pitt.  He did a co-op at Mine Safety Appliances (MSA) this past summer.  His projects there pertained to material selection, operations support, and failure analysis for the design and manufacturing of safety products. He says, “Although ultimately, I decided that I preferred research over industry, working at MSA really taught me a lot about professional development and how research and industry are connected.”  He notes that it wasn’t until he began having research and industry experiences that he really learned that engineering was right for him. “Figuring out how to connect different pieces of information that I learned in school, and using it to develop something new, is what I really enjoy.” After graduation, Ekaputra plans to pursue his PhD in materials science, specializing in materials for aerospace application. He is currently in the process of deciding which school he will attend.  Wherever he ends up, he knows he would like to work to send humans to space, maybe even at NASA, though he believes he will enjoy doing research anywhere. He says, “The best part of Pitt engineering, in my opinion, is the variety of opportunities afforded to students, like co-op, study abroad, and the vast variety of clubs and organizations that students can join. These are all things I’m grateful to have had the opportunity to pursue, and which have defined my undergraduate studies.” We wish Ekaputra the best of luck in all his future endeavors!
Meagan Lenze
Mar
30
2020

A Donation in Flight

MEMS

A generous gift donation was recently made to the MEMS Department in honor of Marion Alice Nye “Buzz” Barry. Marion was a licensed commercial pilot, certified flight and ground school instructor, a member of the Ninety-Nine Women Pilots Association, and one of the first women in the aviation industry. In the spirit of her valiance and technical accomplishments, an annual academic scholarship will be awarded to a student with interest and involvement in aerospace engineering and aviation. The scholarship can be used for tuition or sponsored academic research related to aerospace engineering. The donation was facilitated by MEMS professor, Dr. Matt Barry, who is the grandson of Marion.

Mar
10
2020

Learn more about Pitt's planning and response to COVID-19

Bioengineering, Chemical & Petroleum, Civil & Environmental, Electrical & Computer, Industrial, MEMS, Diversity, Student Profiles, Office of Development & Alumni Affairs

Please visit and bookmark the University of Pittsburgh COVID-19 site for the most up-to-date information and a full list of resources. From the University Times: As the coronavirus COVID-19 continues to spread around the world, Pitt is remaining diligent with addressing related issues as the pop up. For an overall look at updates from Pitt, go to emergency.pitt.edu. On Saturday, Provost Ann Cudd issued a statement about how to support faculty and staff who have committed to attending professional conferences this semester and choose not to attend due to the COVID-19 outbreak. The University will grant an exception for travel booked through May 31 and reimburse any out-of-pocket expenses incurred by those who decide to cancel travel. The administration will reassess this deadline date as COVID-19 evolves and may extend the deadline as conditions evolve. For more updates from the provost, go to provost.pitt.edu. The provost and the University Center for Teaching and Learning is encouraging faculty to be prepared if remote learning situations become required. The center has set up a page detailing the basics of providing instructional continuity. The page will be updated regularly. Find information about remote learning and more at teaching.pitt.edu/instructional-continuity. All business units and responsibilities centers also are being asked to work on how to handle mass absenteeism and/or the need for as many people as possible to work at home.

Feb

Feb
14
2020

Rumcik Scholarship Dinner Held

MEMS

A celebration dinner was recently held to honor the 2019 recipients of The Robert E. Rumcik ’68 Scholarship in Mechanical and Materials Engineering. From left, those present were; Dr. Brendan Connolly (Operations Engineer, Ellwood Quality Steels and former Rumcik Scholar), Jonah De Cortie (MSE junior, scholar recipient), Mike Morgus (President, Ellwood Quality Steels), Alexandra Beebout (MSE senior, scholar recipient), Bob Rumcik (retired President of Ellwood Quality Steels), and Dr. Brian Gleeson (MEMS Department Chair). Beebout has accepted a position at Ellwood and will begin working full-time upon graduating this spring.

Jan

Jan
30
2020

Stellar Student Researchers

Chemical & Petroleum, MEMS, Student Profiles

PITTSBURGH (Jan. 30, 2020) — Most researchers can take certain things, like gravity, for granted. That is not the case for the two groups of students from the University of Pittsburgh who will be sending their experiments to fly aboard the International Space Station (ISS). Thanks to a Pitt SEED Grant, two groups of students from the Swanson School of Engineering and the School of Pharmacy have the opportunity to send experiments into space to study the effects of microgravity on their subjects through Pitt’s participation in the Student Spaceflight Experiments Program (SSEP). “This is an incredible opportunity for our students to participate in one of humankind’s most impressive ventures: spaceflight,” says David Vorp, PhD, associate dean for research, John A. Swanson Professor of Bioengineering at the Swanson School of Engineering, and co-principle investigator of the SSEP at Pitt. “We’re impressed that our interdisciplinary student teams designed not one, but two experiments accepted to this highly selective program.” Vorp is joined as co-principle investigator by Ravi Patel, PharmD, and Kerry Empey, PharmD, PhD, from the School of Pharmacy. John Donehoo, RPh, clinical pharmacist at UPMC, joins the project as a select collaborator. The SSEP student teams are given a 10-inch silicone tube in which to perform their experiments, which they can segment with clamps to keep elements of the experiment separate until they reach the ISS. Scientists aboard the ISS can only be given simple instructions, like removing the clamps and shaking the tube, making experiment design complicated. Finding a Silver Lining One interdisciplinary group of students is studying how silver nanoparticles effect the immune response of Daphnia Magna, a species of water flea that can show an immune response. Researchers Samantha Bailey, PharmD candidate; Jordan Butko, sophomore studying mechanical engineering; Amanda Carbone, junior studying chemical engineering; and Prerna Dodeja, MS student in the School of Pharmacy, will look at genetic markers in the organism that indicate its immune response once it returns to earth. “Researchers have previously tested immune response in Daphnia Magna, but no one has looked at it with regard to nanoparticles yet,” says Carbone. “We’re excited that we get to build on the work that others have done and explore new territory.” Silver nanoparticles are also sometimes found in antibacterial products and have been associated with significant toxicity in the liver and brain. While these nanoparticles aren’t so problematic on Earth, where gravity keeps them down, they could be more harmful in microgravity, where they can be accidentally inhaled or ingested. The study will investigate the effect of these silver nanoparticles on Daphnia Magna’s immune system in microgravity, comparing it to Daphnia Magna’s response on Earth, to shed light on if and how astronauts’ immune systems function differently in space. Aerospace Aluminum Marissa Defallo, a junior studying mechanical engineering, and Nikolas Vostal, a junior studying materials science, make up the second group of student researchers. They will send a sample of 3D-printed aluminum with unique topography, combined with an oxidizer like a saltwater solution, to the ISS to study corrosion in microgravity. Aluminum is frequently used in the aerospace industry, including on the ISS, and the experiment will provide insights into how the material corrodes in space, information that could inform future corrosion-resistant materials. “At my co-op with American Airlines, we had to do corrosion training, and that evolved into the idea for this project. When satellites are in orbit, they are still in Earth’s atmosphere, and there’s oxygen present to cause corrosion,” says Defallo.  “I’ve always had a passion for space and want to work for a company like SpaceX someday, so this kind of experience is an invaluable opportunity to have.” Though the launch date is not yet officially scheduled, the SSEP teams say they may be able to send the experiments into space in June 2020.
Maggie Pavlick
Jan
16
2020

The Difference the Right Tools Can Make

MEMS

PITTSBURGH (Jan. 16, 2019) —  Sometimes, in order to understand the big picture, you need to start by assessing the smallest of details. It’s a truth that engineers know well — selecting the right materials can mean the success or failure of a given application. As technology advances, researchers have assessed engineering materials at the microscopic level for applications ranging from nanomachines to semiconductors, specialized coatings to robotics. For researchers at the University of Pittsburgh’s Swanson School of Engineering, looking closely enough to engineer materials for cutting-edge applications would not have been possible without the generous $1 million gift that Thomas F. Dudash provided in 2018. Mr. Dudash, an alumnus of the University of Pittsburgh who received his bachelor’s degree in metallurgical engineering in 1960, never imagined that he’d have a million dollars to donate for advanced research. After a lifelong career with Allegheny Ludlum, he wanted to share his success with the next generation of materials engineers. The gift was designated for the Department of Mechanical Engineering and Materials Science (MEMS), the successor to the metallurgical engineering program. The gift enabled the Department to purchase nano-manipulators, specialized sample holders that allow researchers to make in situ observations of materials behavior at the nano-scale using transmission electron microscopy. In-situ atomistic observation of a gold nano-crystal from Mao's research. Those observations have led to foundational discoveries that are crucial for materials development. Scott X. Mao, MEMS professor, uses a specially designed sample holder to study how metals elongate and deform at the atomic level. Microelectronic mechanical systems rely on components made from microscopic structures of these metals, but metals behave differently at such a reduced length scale. Understanding the mechanical behavior of nanostructured metallic materials will enable the further development of strong and reliable components for advanced nanomechanical devices. Without such holder, it’s impossible to carry out an atomic scaled mechanical and electrical experiments under the most advanced high resolution electron microscope to achieve the understanding. Electron microscopy is used to observe and test individual nanoparticles on flat surface in Jacobs' research. Tevis Jacobs, assistant professor in MEMS, was able to acquire a specialized holder, which enables research advancing the understanding of micro- and nano-surfaces and engineering more stable nanoparticles. Nanoparticles play an important role in advanced industries and technologies, from electronics and pharmaceuticals to catalysts and sensors. Because they can be as small as 10 atoms in diameter, they are susceptible to coarsening with continued use, reducing their functionality and degrading performance. Jacobs received a $500,000 National Science Foundation CAREER Award for this work that will utilize the specialized holder to directly study and measure adhesion properties of nanoparticles and their supporting substrates. Thanks to Mr. Dudash’s gift, Jacobs and his team were able to procure the only commercially-available tool that can manipulate the materials as precisely as is necessary to perform their impactful research. Polymer with embedded copper molecules. The gift also enabled Assistant Professor Markus Chmielus’s research analyzing 3D-printed denture frames. His group has used a SkyScan 1272 micro-computed tomography (microCT) scanner – purchased and maintained using gift funds - to export an accurate model of an existing denture, then used binder jet 3D-printing to reproduce the model. The scanner can analyze samples prior to 3D-printing as well to look for porosity and how that porosity changes when heat treatment is added, helping researchers develop a processing step to eliminate porosity. So far, the group has used the microCT to evaluate densities of green and sintered binder jet 3D-printed metals, including nickel-based superalloys , functional magnetic materials, and a commonly used titanium alloy, Ti-6Al-4V. Image from Roberts' paper in ATVB, "Calcification in Human Intracranial Aneurysms Is Highly Prevalent and Displays Both Atherosclerotic and Nonatherosclerotic Types." Anne Robertson, MEMS and BioE professor, and her team use the micro-CT in their NIH-supported work studying the causes for rupture of intracranial aneurysms (IAs). Robertson and her team used the specialized micro-CT equipment to analyze aneurysm tissue from patients and found that calcification is substantially more prevalent than previously thought. The micro-CT was able to identify microcalcifications as small as 3 micrometers. The team discovered differences in the types of calcification in ruptured versus unruptured aneurysms, made possible using the micro-CT system. The work was published in the journal Arteriosclerosis, Thrombosis, and Vascular Biology (ATVB (doi:10.1161/ATVBAHA.119.312922). This improved understanding could lead to new therapeutic targets and, ultimately, improved outcomes for patients with aneurysms. Great innovations require the right tools. Thanks to Mr. Dudash’s gift, the MEMS Department has the tools to innovate, discover and create—tools that have produced an important base of knowledge that manufacturers will be building on for years to come. “It is generous gifts from donors like Mr. Dudash that enable advanced research and, ultimately, discovery,” said Brian Gleeson, Tack Chaired Professor and MEMS Department Chairman. “Moreover, the funds provided by Mr. Dudash are being used strategically to create specialized capabilities that greatly help to procure further funding from agencies and, hence, further bolster research activities.”
Maggie Pavlick
Jan
6
2020

MEMS Welcomes Two New Faculty Members

MEMS

Qihan Liu Qihan Liu Dr. Liu received his BS from the University of Science and Technology of China (Special Class for Gifted Young) in 2010 and his PhD from Harvard University in Materials Sciences and Mechanical Engineering in 2016. Since completing his PhD, Dr. Liu has worked at Harvard as a postdoctoral fellow in the Bioengineering Department studying the manufacturing of 3D nanofibrous scaffold for regenerative heart valves. Trained as a theorist during his PhD studies, Dr. Liu has developed a strong background in the mechanics and physics of soft materials, with expertise spanning elastic instability, fracture, rheology, interfacial phenomena, and multi-physics constitutive models. Paul Ohodnicki Paul Ohodnicki Dr. Ohodnicki received bachelor degrees in both Economics and Engineering Physics from the University of Pittsburgh. He earned his MS and Ph.D. degrees in Materials Science from Carnegie Mellon University in 2006 and 2008, respectively. Dr. Ohodnicki’s most recent position was Materials Scientist and Technical Portfolio Lead of the Functional Materials Team at the National Energy Technology Laboratory (NETL) in Pittsburgh. While at NETL, Dr. Ohodnicki received a Presidential Early Career Award in Science and Engineering (2016) and was a finalist for the Service to America Promising Innovations Medal (2017). His research experience has spanned academia, industry, and the federal government. The main focus of Dr. Ohodnicki’s research is the synthesis, characterization, and integration of functional materials down to the nano-scale, together with component-level performance improvements through advanced materials engineering strategies. He has exploited advanced processing methods for both thin film and bulk nano-structured materials and nano-composites. These methods include additive manufacturing, thin film deposition, nanofabrication, and far-from equilibrium processing such as rapid solidification in addition to anisotropic processing in the presence of applied strain and magnetic fields. His research has been particularly impactful in the areas of soft magnetic materials and sensors for harsh service environments.

Jan
6
2020

NSF Grant Awarded

MEMS

Sung-Kwon Cho Microfluidics have had a tremendous impact on biotechnology, biosensors, health care, and more.  Conventional microfluidics are based on a micro channel network for continuous flow streams. In contrast, digital microfluidics use droplets as the operational element, which serve as carriers and reaction chambers eliminating the need for confining physical structures. The current method most commonly used to drive these droplets is through electrowetting on dielectric (EWOD). However, EWOD often suffers from limitations such as high voltage requirement and biofouling, hampering many real applications. Dr. Sung Kwon Cho, mechanical engineering professor, was awarded a $310,000 grant from the National Science Foundation to seek a straightforward pathway to a new digital microfluidic platform without the limitations of EWOD. The project is entitled, “Collaborative Research: Magnetically Actuated Black Silicon Ratchet Surfaces for Digital Microfluidics," and is in collaboration with Professor Seok Kim of the University of Illinois at Urbana – Champaign. The proposed platform exploits a purely mechanical means to drive discrete liquid droplets in a rapid, flexible, programmable, and reconfigurable manner. The key mechanism is dynamically tuning surface morphology using magnetically-actuated anti-biofouling ratchet surfaces.  As a result, droplets are essentially driven mechanically, not electrically. This three-year collaborative research project will combine the expertise of Profs. Cho and Kim in mechanics, materials, manufacturing and microfluidics in order to achieve understanding and knowledge in the proposed system, and finally open up a new interdisciplinary research area across smart composite materials and digital microfluidics.