- About
- Research
- Undergraduate
- Graduate
- News & Events
- People
- Contact Us

- Admissions
- Academics
- Research
- Students
- Alumni & Giving
- Resources
- I AM

- Bioengineering
- Chemical Engineering
- Civil Engineering
- Computer Engineering
- Electrical Engineering
- Engineering Science
- Environmental Engineering
- Industrial Engineering
- Innovation, Product Design and Entrepreneurship
- Materials Science and Engineering
- Mechanical Engineering
- Mining Engineering
- Nuclear Engineering
- Petroleum Engineering
- Sustainable Engineering

PhD in Mechanical Engineering, Virginia Polytechnic Institute and State University, 1998

MS in Mechanical Engineering, Virginia Polytechnic Institute and State University, 1992

BS in Mechanical Engineering; Mathematics Minor, Virginia Polytechnic Institute and State University, 1991

(2008) Best paper award: M. S. Johannes, D. G. Cole, and R. L. Clark, Enabling soft lithography using and atomic force microscope. 2nd International Conference on Micro- and NanoSystems.

(1992) Graduate School Cunningham Doctoral Fellowship, VPI&SU.

(1991) Center for Intelligent Material Systems and Structures Fellowship, VPI&SU.

(1991) National Science Foundation, Graduate Fellowship Honorable Mention.

(1987) Eagle Scout, Boy Scouts of America.

(1986) B'nai B'rith Athletic and Achievement Award.

**Cole, D.**, and Pickel, J.G., 2011, "Improving single-molecule experiments with feedback control of optical traps," To appear in J. Dyn. Syst. Meas. Contr.

Pickel, J.G., and **Cole, D.**, 2011, "Making magnetic traps adaptive for improvedsurface-force and single-molecule experiments," To appear in IEEE Trans. Contr. Sys. Tech..

Bucci, B.A., **Cole, D.**, Ludwick, S.J., and Vipperman, J.S., "A nonlinear control algorithm for reducing settling time in high-precision point to point motion," IEEE Trans. Contr. Sys. Tech., Manuscript submitted for publication.

Bucci, B.A., Vipperman, J.S., **Cole, D.**, and Ludwick, S.J., "Evaluation of a servo settling algorithm," Precision Engineering, Manuscript submitted for publication.

**Cole, D.**, and Pickel, J.G., 2012, "Nonlinear proportional plus integral control ofoptical traps for exogenous force estimation," J. Dyn. Syst. Meas. Contr, vol.134, no.1, p. 011020.

Kennedy, S.J., **Cole, D.**, and Clark, R.L., 2011, "Note: Curve fit models for atomic force microscopy cantilever calibration in water," Rev. Sci. Instrum, vol.82, no.11, p. 116107.

Kozlowski, M.V., **Cole, D.**, and Clark, R.L., 2011, "A comprehensive study of the RLseries resonant shunted piezoelectric: A feedback controls perspective," J. Vib. and Acous., vol.133, no.1.

Kennedy, S.J., **Cole, D.**, and Clark, R.L., 2009, "A method for atomic force microscopy cantilever stiffness calibration under heavy fluid loading," Rev. Sci. Instrum, vol.80, no.12.

**Cole, D.**, 2008, "Difficulties in fitting the thermal response of atomic force microscope cantilevers for stiffness calibration," Measurement Science and Technology, vol.19, p. 125101.

Jenness, N.J., Wulff, K.D., Johannes, M.S., Padgett, M.J., **Cole, D.**, and Clark, R.L., 2008, "Three-dimensional parallel holographic micropatterning using a spatiallight modulator," Optics Express, vol.16, pp. 15942-15948.

Rivera, M., Lee, W., Ke, C., Marszalek, P.E., **Cole, D.**, **Cole, D.**, 2008, "Minimizing pulling geometry errors in atomic force microscope single molecule forcespectroscopy," Biophys. J., vol.95, no.8, pp. 3991-3998.

Wulff, K.D., **Cole, D.**, and Clark, R.L., 2008, "Adaptive disturbance rejection in anoptical trap," Appl. Opt., vol.47, no.20, pp. 3585-3589.

Wulff, K.D., **Cole, D.**, and Clark, R.L., 2008, "An adaptive system identificationapproach to optical trap calibration," Optics Express, vol.16, no.7, pp. 4420-4425.

Wulff, K.D., **Cole, D.**, and Clark, R.L., 2008, "Controlled rotation of birefringentparticles in an optical trap," Appl. Opt., vol.47, no.34, pp. 6428-6433.

**Cole, D.**, and Clark, R.L., 2007, "Fluid-structure interaction in AFM cantilever dynamics and thermal response," J. Appl. Phys., vol.101, p. 034303.

Johannes, M.S., **Cole, D.**, and Clark, R.L., 2007, "Atomic force microscope based nanofabrication of master pattern molds for use in soft lithography," Applied Physics Letters, vol.91, no.12, p. 123111.

Johannes, M.S., **Cole, D.**, and Clark, R.L., 2007, "Three-dimensional design andreplication of silicon oxide nanostructures using an atomic force microscope," Nanotechnology, vol.18, no.34, p. 345304.

Johannes, M.S., **Cole, D.**, and Clark, R.L., 2007, "Velocity controlled anodization nanolithography on an atomic force microscope using Faradaic current monitoring," Appl. Phys. Lett., vol.90, p. 103106.

McEver, M.A., Ardelean, E.V., **Cole, D.**, and Clark, R.L., 2007, "Active control and closed-loop identification of flutter instability in a typical section airfoil," AIAA J. Guid. Contr. Dyn., vol.30, no.3, pp. 733-40.

Wulff, K.D., **Cole, D.**, and Clark, R.L., 2007, "Servo control of an optical trap," Appl. Opt., vol.46, pp. 4923-4931.

Ardelean, E.V., McEver, M.A., **Cole, D.**, and Clark, R.L., 2006, "Active flutter control of a typical section model with a v-stack piezoelectric flap actuator," AIAA J. of Aircraft, vol.43, no.2, pp. 482-86.

Johannes, M.S., Kuniholm, J.F., **Cole, D.**, and Clark, R.L., 2006, "Automated CAD/CAM based nanolithography using a custom atomic force microscope," IEEE Trans. on Automation Science and Engineering, vol.3, no.3, pp. 236-39.

Moon, S., Clark, R.L., and **Cole, D.**, 2006, "Real-time implementation of adaptivefeedback and feedforward generalized predictive control algorithm," J. Sound and Vib., vol.294, no.1-2, pp. 82-96.

Wulff, K.D., **Cole, D.**, Clark, R.L., DiLeonardo, R., Leach, J., Cooper, J., Gibson, G., and Padgett, M.J., 2006, "Aberration correction in holographic optical tweezers," Optics Express, vol.14, no.9, pp. 4169-74.

Moon, S., **Cole, D.**, and Clark, R.L., 2005, "The recursive generalized predictivefeedback control: theory and experiments," J. Sound and Vib., vol.279, no.1-2, pp. 171-99.

Ardelean, E.V., **Cole, D.**, and Clark, R.L., 2004, "High performance "V-stack" piezoelectric actuator," J. of Intel. Mat. Sys. and Struct., vol.15, pp. 879-89.

McEver, M.A., **Cole, D.**, and Clark, R.L., 2004, "Active control of optical jitter usingQ-parameterization," Optical Engineering, vol.43, no.4, pp. 904-10.

Vogen, B.N., Wulff, K.D., Xu, J., **Cole, D.**, Craig, S., and Clark, R.L., 2004, "Manipulating DNA using an optical traps," Abstracts of Papers of the American Chemical Society.

McEver, M.A., Ardelean, E.V., **Cole, D.**, and Clark, R.L., 2003, "Active control and closed-loop identification of flutter instability in a typical section airfoil," 45th AIAA/ASME/ASCE/AHS Structures, Structural Dynamics, and Materials Conference.

Banks, H.T., **Cole, D.**, Furati, K.M., Ito, K., and Pinter, G.A., 2002, "A computationalmodel for sound field absorption by acoustic arrays," J. Intel. Mat. Sys. and Struct., vol.13, no.4, pp. 231-40.

Clark, R.L., **Cole, D.**, and Frampton, K.D., 1996, "Phase compensation for feedbackcontrol of enclosed sound fields with in-bandwidth transducers," J. of Sound & Vib., vol.195, no.5, pp. 701-18.

Saunders, W.R., **Cole, D.**, and Fannin, C.A., 1996, "Similitude analysis for piezostructures," J. Intel. Mat. Sys. Struct., vol.7, no.2, pp. 162-67.

Clark, R.L., and **Cole, D.**, 1995, "Active damping of enclosed sound fields through direct rate feedback control," J. Acoust. Soc. Amer, vol.97, no.3, pp. 1710-1716.

**Cole, D.**, and Clark, R.L., 1994, "Adaptive compensation of piezoelectric sensoriactuators," J. Intel. Mat. Sys. Struct, vol.5, no.5, pp. 665-72.

Saunders, W.R., **Cole, D.**, and Robertshaw, H.H., 1994, "Experiments in piezostructure modal analysis for MIMO feedback control," J. Smart Materials and Structures, vol.3, pp. 210-18.

**Cole, D.**, Saunders, W.R., and Robertshaw, H.H., 1993, "Modal parameter estimation for piezostructures," J. Vib. and Acoust..

McAdams, D.G., and **Cole, D.**, 2012, "Aberration correction for improving the performance of DMHL systems," 2012 SPIE Photonics West.

McAdams, D.R., and **Cole, D.**, 2012, "Using a dwell-time increase to compensate forSLM pixelation-limited diffraction efficiency in DMHL," 2012 SPIE Photonics West.

**Cole, D.**, 2011, "Adaptive identification and control for small modular reactors," ASME 2011 Small Modular Reactor Symposium.

**Cole, D.**, 2011, "On nonlinear control of optical traps using pulling trajectory tracking for single-molecule experiments," 2011 ASME International Design Engineering Technical Conference.

Kirsch, N.A., **Cole, D.**, Vipperman, J.S., and Ludwick, S.J., 2011, "Characterization of periodic disturbance in rolling element bearings using an optical sensor," 2011 ASME International Mechanical Engineering Congress and Expo.

Kirsch, N.A., **Cole, D.**, Vipperman, J.S., and Ludwick, S.J., 2011, "Characterization of periodic disturbances in rolling element bearings using an optical sensor," 2011 American Society of Precision Engineering Conference.

Pickel, J.G., and **Cole, D.**, 2011, "Exogenous force estimation using disturbance modeling for optical trap experiments," 2011 ASME International Design Engineering and Technical Conference.

Bucci, B.A., **Cole, D.**, Vipperman, J.S., and Ludwick, S.J., 2010, "Practical friction compensation for ultra precision point-to-point motion," 2010 American Society of Precision Engineering Conference.

**Cole, D.**, 2009, "Dynamic Maskless Holographic Lithography," DARPA Workshop: Microscale Rate Integrating Gyroscopes.

**Cole, D.**, and Weiland, L.M., 2009, "An analysis of micro aeroelastic energy harvesting devices," 2009 ASME Dynamic Systems and Controls Conference.

Bucci, B.A., **Cole, D.**, Vipperman, J.S., and Ludwick, S.J., 2009, "Friction modeling of linear rolling element bearing in high precision linear stages," 2009 American Society of Precision Engineering Conference.

Kennedy, S.J., **Cole, D.**, and Clark, R.L., 2009, "An automated implementation of a cantilever calibration technique for heavy fluid loading," 2009 ASME International Design Engineering and Technical Conference.

Ludwick, S., Bucci, B., **Cole, D.**, and Vipperman, J., 2009, "Friction Modeling of Linear Rolling Element Bearings in High Precision Linear Stages," Proceedings of the 24th Annual Meeting of the American Society for Precision Engineering.

McAdams, D.R., and **Cole, D.**, 2009, "Measuring inter-particle forces at an interfacewith optical tweezers and long working-distance objective lens," 2009 ASME International Design Engineering and Technical Conference.

Rivera, M., Morris, C., Carlson, D., Toone, E.J., **Cole, D.**, and Clark, R.L., 2009, "Minimizing tip-sample contact force in automated atomic force microscope based force spectroscopy," 2009 ASME International Design Engineering and Technical Conference.

**Cole, D.**, 2008, "Optical traps for surface force and colloidal interactions," National Energy Technology Laboratory.

Jenness, N.J., **Cole, D.**, and Clark, R.L., 2008, "Three-dimensional holographic lithography using a spatial light modulator," 2008 ASME International Design Engineering and Technical Conference.

Johannes, M.S., **Cole, D.**, and Clark, R.L., 2008, "Enabling soft lithography using an atomic force microscope," 2008 ASME International Design Engineering and Technical Conference.

Rivera, M., Le, W., Marszalek, P.E., **Cole, D.**, and Clark, R.L., 2008, "Aligning molecular attachment sites in single molecule force spectroscopy measurements," 2008 ASME International Design Engineering and Technical Conference.

Wulff, K.D., **Cole, D.**, and Clark, R.L., 2008, "Adaptive servo controller design in an optical trap," 2008 ASME International Design Engineering and Technical Conference.

Jenness, N.J., Wulff, K.D., Johannes, M.S., **Cole, D.**, and Clark, R.L., 2007, "Application of dynamic maskless holographic lithography," 2007 International Congress on Applications of Lasers & Electro-Optics.

Jenness, N.J., Wulff, K.D., Johannes, M.S., **Cole, D.**, and Clark, R.L., 2007, "Dynamic maskless holographic lithography," 2007 ASME International Design Engineering and Technical Conference.

Kennedy, S.J., **Cole, D.**, and Clark, R.L., 2007, "Evaluation of a structural controls model of thermally driven cantilever vibration," 2007 ASME International Design Engineering and Technical Conference.

Rivera, M., Ke, C., Marszalek, P.E., **Cole, D.**, and Clark, R.L., 2007, "A method to correct pulling geometry induced errors in single molecule force spectroscopy measurements," 2007 ASME International Design Engineering and Technical Conference.

Wulff, K.D., **Cole, D.**, and Clark, R.L., 2007, "Rotational control of birefringent particles using an optical trap," 2007 ASME International Design Engineering and Technical Conference.

Wulff, K.D., **Cole, D.**, Clark, R.L., DiLeonardo, R., Leach, J., Cooper, J., Gibson, G., and Padgett, M.J., 2006, "Holographic optical tweezers aberration correction using adaptive optics without a wavefront sensor," 2006 SPIE Optics and Photonics Conference.

**Cole, D.**, Wulff, K.D., and Clark, R.L., 2005, "Controlling optical traps: performance and analytical limits," 2005 SPIE Optics & Photonics Conference.

McEver, M.A., Ardelean, E.V., **Cole, D.**, and Clark, R.L., 2005, "Robust, adaptive Q-parameterization for feedback control of vibro-acoustic systems," 2005 ASME Noise Control and Acoustics Conference.

Wulff, K.D., **Cole, D.**, and Clark, R.L., 2005, "Mathematical model of a DIC position sensing system within an optical trap," 2005 SPIE Optics & Photonics Conference.

Ardelean, E.V., McEver, M.A., **Cole, D.**, and Clark, R.L., 2004, "Aeroelastic control using V-stack piezoelectric actuator and Q-parameterized system identification," 2004 SPIE Smart Structures and Materials Conference.

Burns, S.R., **Cole, D.**, and Clark, R.L., 2004, "The adaptive piezoelectric microsensoriactuator for active control of microcantilevers," 2004 ASME International Mechanical Engineering Conference & Exposition.

Johannes, M.S., Clark, R.L., and **Cole, D.**, 2004, "Joining dip-pen nanolithography and microcontact printing into a nanolithographic process: from engineering design to parallel fabrication," 2004 International Mechanical Engineering Conference & Exposition.

Moon, S., **Cole, D.**, and Clark, R.L., 2004, "Adaptive generalized predictive control combined with a least-squares lattice filter," 2004 SPIE Smart Structure and Materials Conference.

Moon, S., Clark, R.L., and **Cole, D.**, 2004, "The recursive generalized predictive control for systems with disturbance measurements," 2004 SPIE Smart Structures and Materials Conference.

Wulff, K.D., **Cole, D.**, and Clark, R.L., 2004, "Development of precision optical traps for single molecule and motor protein research," 2004 ASME International Mechanical Engineering Conference & Exposition.

Ardelean, E.V., McEver, M.A., Clark, R.L., and **Cole, D.**, 2003, "Flutter suppression using V-stack piezoelectric actuator," 44th AIAA/ASME/ASCE/AHS Structures, Structural Dynamics and Materials Conference.

Kozlowski, M.V., **Cole, D.**, and Clark, R.L., 2003, "Performance and sensitivity study on sensoriactuator circuits for positive real damping schemes," 44th AIAA/ASME/ASCE/AHS Structures, Structural Dynamics, and Materials Conference.

McEver, M.A., **Cole, D.**, and Clark, R.L., 2003, "Experiments in adaptive optical jitter control," 2003 SPIE Smart Structures and Materials Conference.

McEver, M.A., Ardelean, E.V., **Cole, D.**, and Clark, R.L., 2003, "Active control and closed-loop identification of flutter instability in a typical section airfoil," 45th AIAA/ASME/ASCE/AHS Structures, Structural Dynamics, and Materials Conference.

McEver, M.A., Moon, S., **Cole, D.**, and Clark, R.L., 2003, "Adaptive feedback control for interior noise control in rocket fairings," 44th AIAA/ASME/ASCE/AHS Structures, Structural Dynamics, and Materials Conference.

Moon, S., Clark, R.L., and **Cole, D.**, 2003, "The on-line generalized predictive control combined with a fast transversal filter," 2003 SPIE Smart Structures and Materials Conference.

Kozlowski, M.V., **Cole, D.**, and Clark, R.L., 2002, "Modeling and experimental verification using the sensoriactuator circuit for passive vibration damping," 2002 SPIE Smart Structures and Materials Conference.

McEver, M.A., **Cole, D.**, and Clark, R.L., 2002, "Adaptive feedback control using coprime factorization," 2002 SPIE Smart Structures and Materials Conference.

McEver, M.A., **Cole, D.**, and Clark, R.L., 2002, "An adaptive feedback noise control approach using Q-parameterization," 2002 ASME Noise Control and Acoustics Conference.

Moon, S., Clark, R.L., and **Cole, D.**, 2002, "The theory and experiment of recursive generalized predictive control," 2002 ASME Noise Control and Acoustics Conference.

**Cole, D.**, and Robertshaw, H.H., 1994, "Direct rate feedback for piezostructures using sensoriactuators with feedthrough dynamics," 35th Structures, Structural Dynamics and Materials Conference and Adaptive Structures Forum.

**Cole, D.**, and Robertshaw, H.H., 1993, "Comparison of various digital LQ-MIMO control laws," 2nd Conf. on Recent Advances in Active Control of Sound and Vibration.

**Cole, D.**, Robertshaw, H.H., and Tappert, P.M., 1993, "Hierarchical collocated approaches for dynamics control of structures using large-motion adaptive trusses," 4th International Conference on Adaptive Structures.

Weiland, L.M., **Cole, D.**, and Clark, W.W., 2012, "Adaptive Hydroelectric Energy Harvesting," 13/622855.

**Cole, D.**, 1998, "Feedback Acoustic Energy Dissipation Device with Compensator," United States Patent Number 5848169.

Vipperman, J.S., Clark, R.L., and **Cole, D.G.**, 1996, "Adaptive Piezoelectric Sensoriactuator," United States Patent Number 5578761.