Pitt | Swanson Engineering
Prof. Sangyeop Lee
Mechanical Engineering & Materials Science
Lee, Sangyeop
Assistant Professor
Office: 538A Benedum Hall
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PhD in Mechanical Engineering, Massachusetts Institute of Technology, 2015


M.S. in Mechanical and Aerospace Engineering, Korea Advanced Institute of Science and Technology, 2005


B.S. in Mechanical and Aerospace Engineering, Korea Advanced Institute of Science and Technology, 2003





• Transport phenomena of heat, charge, and mass – simulation and experimental characterization of nanoscale transport; thermal transport in novel materials including 2D layered materials, phase change materials, ferroelectric materials, and soft matters; transport phenomena at interface; multi-scale simulation from nano to macroscale

• Solid-state energy conversion – thermoelectrics; electrochemistry; electrocalorics




• Poster award in Micro/Nano poster forum of ASME IMECE, San Diego, CA                                   2013


• Samsung scholarship ($50,000/year for tuition and stipend)                                                      2009-2014


• Graduated with honors (Magna Cum Laude) from KAIST                                                            2003


• Korean government scholarship for B.S. and M.S. program (full tuition and boarding)                  1999-2005





15) S. Lee, D. Broido, K. Esfarjani, and G. Chen, Hydrodynmic phonon transport in suspended graphene. Nature Communications, 6:6290 (2015).


14) S. Lee, and G. Chen, Nanostructured thermoelectric materials, in Innovative Thermoelectric Materials edited by H. Katz and T. Poehler, Imperial College Press, in press.


13) S. Lee, K. Esfarjani, T. Luo, J. Zhou, Z.T. Tian, and G. Chen, Resonant bonding leads to low lattice thermal conductivity. Nature Communications, 5:3525 (2014).                                                                                                                            


        ◦ Featured at MIT news: http://newsoffice.mit.edu/2014/solving-mystery-thermoelectrics-0429


12) S. Lee, K. Esfarjani, J. Mendoza, M.S. Dresselhaus, and G. Chen, Lattice thermal conductivity of Bi, Sb, and Bi-Sb alloy from first principles. Physical Review B, 89(8), 085206 (2014).


11) B. Liao, S. Lee, K. Esfarjani, and G. Chen, First-principles study of thermal transport in FeSb2. Physical Review B, 89(3), 035108 (2014).


10) Z.T. Tian, S. Lee, and G. Chen, A Comprehensive Review of Heat Transfer in Thermoelectric Materials and Devices, Annual Review of Heat Transfer, 17 (2014)


9) W. Liu, K.C. Lukas, K. McEnaney, S. Lee, Q. Zhang, C.P. Opeil, G. Chen, and Z.F. Ren, Studies on the Bi2Te3-Bi2Se3-Bi2S3 system for mid-temperature thermoelectric energy conversion. Energy and Environmental Science, 6(2), 552-560 (2013)


8) Z.T. Tian, S.Lee, and G. Chen, Heat transfer in thermoelectric materials and devices. Journal of Heat Transfer, 135(6), 061605-061605 (2013)


7) Q. Zhang, H. Wang, W. Liu, H. Wang, B. Yu, Q. Zhang, Z.T. Tian, G. Ni, S. Lee, K. Esfarjani, G. Chen, and Z.F. Ren, Enhancement of thermoelectric figure-of-merit by resonant states of aluminium doping in lead selenide. Energy and Environmental Science, 5(1), 5246-5251 (2012)


6) X. Yan, G. Joshi, W. Liu, Y. Lan, H. Wang, S. Lee, J.W. Simonson, S.J. Poon, T.M. Tritt, G. Chen, and Z.F. Ren, Enhanced thermoelectric figure of merit of p-type half-heuslers. Nano Letters, 11(2), 556-560 (2010)


5) S. Lee, H.J. Kim, J.H. Jang, E.A. Cho and T.H. Lim, “Performance degradation and microstructure changes in freeze–thaw cycling for PEMFC MEAs with various initial microstructures”, International Journal of Hydrogen Energy, 35(23), 12888-12896 (2010)


4) S. Lee, I.G. Min, H.J. Kim, S.W. Nam, J. Lee, et al., “Development of a 600 W Proton Exchange Membrane Fuel Cell Power System for the Hazardous Mission Robot”, Journal of Fuel Cell Science and Technology, 7(3) (2010)


3) S. Lee, S.U. Kim, H.J. Kim, J.H. Jang, I.H. Oh, et al., “Water removal characteristics of proton exchange membrane fuel cells using a dry gas purging method”, Journal of Power Sources, 180, 784-790 (2008)


2) S. Lee, H.J. Kim, K.H. Kim, E.A. Cho, I.H. Oh, et al., “Gradient catalyst coating for a PEM fuel cell operation under non-humidified condition”, Electrochemical and Solid-state Letters, 10(10), B166-B169 (2007)


1) S. Lee, E.A. Cho, J.H. Lee, H.J. Kim, T.H. Lim, et al., “Effects of purging on the degradation of PEMFCs operating with repetitive on/off cycles”, Journal of the Electrochemical Society, 154(2), B194-B200 (2007)