Associate Professor and Undergraduate Program Director
Department of Mechanical Engineering
University of Maryland, Baltimore County
1000 Hilltop Circle Baltimore, MD 21250
Website: Energy Harvesting & Design Optimization Lab
Education
Ph.D. Mechanical Engineering, KAIST, Korea; 2007
M.S. Mechanical Engineering, KAIST, Korea; 2000
B.S. Mechanical Design & Production Engineering, Yonsei University, Korea; 1998
Employment History
| 2019 – present | Associate Professor, UMBC |
| 2012 – 2019 | Assistant Professor, UMBC |
| 2011 –2012 | Research Assistant Professor, University of Notre Dame, USA |
| 2010 – 2011 | Postdoctoral Research Associate, University of Notre Dame, USA |
| 2008 – 2010 | Postdoctoral Research Associate, University of Maryland, College Park USA |
| 2007 | Researcher, KAERI (Korea Atomic Energy Research Institute), Daejeon Korea |
Honors and Awards
S. Lee (PI), “Design of Multifunctional Energy Harvesting Skin Under Stochastic Vibration and Application to Wireless Sensor Operation,” National Research Foundation (Republic of Korea), Jul. 2009 – Jun. 2010.
Highlight of 2009(One of 23 highlights out of 300 publications), Smart Materials and Structures, Institute of Physics and IOP Publishing Limited, “Robust Segment-Type Energy Harvester and Its Application to a Wireless Sensor,” 2009
Best paper prize, CAE department, The Korean Society of Mechanical Engineering (KSME) Annuals Spring & Fall Conference, “Impact analysis of the spacer grid assembly for PWR fuels(III),” Busan, Korea, 2007
Research Interest
My main research interests include energy harvesting (EH) device design, topology optimization, robust design, and reliability based design optimization. Based on the design optimization technology from my doctoral thesis, I have passionately conducted researches on energy harvesting devices for a battery-free small electronics system. I am continuing my work on researching multidisciplinary engineering design topics considering (i) piezoelectric, electromagnetic, photovoltaic energy conversion, and (ii) uncertainty and randomness of ambient energy characteristic (such as variable vibration signal from machinery). Design optimization methodologies such as topology optimization can be utilized for effective material usage and higher energy conversion efficiency. My long term research goals embrace: (i) durable and sustainable energy harvester design, (ii) system level embodiment of the harvester for system monitoring and energy savings.
Classes Taught
ENME 204: Introduction to Design with CAD (UMBC 2013~)
ENME 360: Vibrations (UMBC 2017~)
ENME 610: Design optimization with Engineering Application (UMBC 2014~)
AME60661: Optimum Design of Mechanical Elements (Univ. of Notre Dame 2011)
Selected Publications
S. Nezami, S. Lee, J. Jin, and K. W. Kang “Shape optimization of railroad vibration energy harvester for structural robustness and power generation performance,” Eng. Struct., Vol. 173, No. 15, pp. 460-471, 2018
H. Jung, S. Lee, S. Jeong, and H. Yoo, “Segmented Impact-Type Piezoelectric Energy Harvester for Self-Start Impedance Matching Circuit,” Smart Mater. Struct. (IF: 2.909), In Press, 2018
A. T. Eshghi, S. Lee, M. K. Sadoughi, C. Hu, Y. C. Kim, and J. H. Seo, “Design optimization under uncertainty and speed variability for a piezoelectric energy harvester powering a tire pressure monitoring sensor,” Smart Mater. Struct., Vol. 26, No. 10, 105037, 2017
S. Seong, C. Hu, and S. Lee, “Design under uncertainty for reliable power generation of piezoelectric energy harvester,”J. Intel. Mat. Syst. Str., 1045389X17689945, 2017
M. Bakhtiarinejad, S. Lee, and J. Joo, “Topology Optimization based on Morphing Mesh for Simultaneous Component Relocation and Frame Structure Design,” Struct. Multidiscip. O., DOI 10.1007/s00158-016-1468-4, 2016
S. Lee and F. Semperlotti, “Design Optimization for Passive Adaptive Structural Networks,” J. Intel. Mat. Syst. Str., Vol. 26, No. 9, pp. 1110-1127, 2015
S. Lee and A. Tovar, “Outrigger Placement in Tall Buildings Using Topology Optimization,” Eng. Struct., Vol. 74, No. 1, pp. 122-129, 2014
S. Lee and B. D. Youn, “A New Piezoelectric Energy Harvesting Design Concept: Multimodal Energy Harvesting Skin,” IEEE T. Ultrason. Ferr., Vol. 58, No. 3, pp. 629-645, 2011
S. Lee, B. D. Youn, and B. C. Jung, “Robust Segment-Type Energy Harvester and Its Application to a Wireless Sensor,” Smart Mater. Struct., Vol. 18, No. 9, 095021 (12pp), 2009 – Selected as “Highlight of 2009” by the publisher