Professor Ren, Wei

Assistant Professor
B.S. and M.S. degree from Tsinghua University in 2006 and 2008
Ph.D. degree in Mechanical Engineering at Stanford University in 2013
Mechanical and Automation Engineering
Room 305, William M.W. Mong Engineering Building
Chinese University of Hong Kong, Shatin, N.T.
Hong Kong SAR, China
(852) 3943 9486
(852) 2603 6002


Dr. Wei Ren received his B.S. and M.S. degree from Tsinghua University in 2006 and 2008, respectively. He received his Ph.D. degree in Mechanical Engineering under the advisory of Dr. Ronald K. Hanson at Stanford University in 2013. After one year of postdoctoral research with Dr. Frank K. Tittel in the Department of Electrical and Computer Engineering at Rice University, Dr. Ren joined CUHK as an assistant professor in the Department of Mechanical and Automation Engineering starting in August, 2014. His current research focuses on the development of new technologies and the understanding of basic principles in the areas of combustion and propulsion, alternative fuels, laser diagnostics and gas sensing.


  • Combustion and fuels: study the oxidation and ignition behaviors of traditional and alternative fuels using shock tube/laser absorption techniques.
  • Optical diagnostics: develop laser-based diagnostics for in situ measurements of various flow field parameters for applications in scramjet, pulse detonation engine, gas turbine engine, coal-fired power plant and other combustion and propulsion systems.
  • Spectroscopic instrumentation: design ultra-sensitive laser spectroscopic instrumentation for trace gas detection and chemical sensing in atmospheric chemistry, environmental monitoring, industrial process control, and biomedical research.

Teaching by Years


  • Engineering Mechanics
  • Introduction to Combustion

  • Introduction to Combustion
  • Renewable Energy Technologies

  • Energy Systems
  • Renewable Energy Technologies

Honors & Awards

  • Best paper award, 2016 International Conference in Aerospace for Young Scientists, 2016
  • Robert A. Welch Foundation Postdoc Fellowship, Rice University, 2013
  • Chinese Government Scholarship for Outstanding Self-financed Students Studying Abroad, 2013
  • Stanford Graduate Fellowship, Stanford University, 2011
  • The Larry C.K. Yung Fellowship, Department of Mechanical Engineering, Stanford University, 2008

Journal Papers (in the recent five years)

  • L. Ma, L. Y. Lau, and W. Ren*, Non-uniform temperature and species concentration measurements in a laminar flame using multi-band infrared absorption spectroscopy, Applied Physics B, accepted (2017).
  • Z. Wang, J. Geng, and W. Ren*, QEPAS detection of the v7 band of ethylene at low pressure with CO2 interference analysis, Applied Spectroscopy, online (2017).
  • W. Ren*, K.-Y. Lam, D. F. Davidson, R. K. Hanson, and X. Yang, Pyrolysis and oxidation of methyl acetate in a shock tube: a multi-species time-history study, Proceedings of the Combustion Institute, 36 (1), 255-264 (2017).
  • Z. Li, C. Shi, and W. Ren*, Mid-infrared multimode fiber coupled quantum cascade laser for off-beam quartz-enhanced photoacoustic detection, Optics Letters, 41 (17), 4095-4098 (2016).
  • Z. Li, Z. Wang, C. Wang, and W. Ren*, Optical fiber tip-based quartz-enhanced photoacoustic sensor for trace gas detection, Applied Physics B, 122 (2016).
  • Z. Wang, Z. Li, and W. Ren*, Quartz-enhanced photoacoustic detection of ethylene using a 10.5 µm quantum cascade laser, Optics Express, 24, 4143-4154 (2016).
  • W. Ren*, L. Luo, F. K. Tittel, Sensitive detection of formaldehyde using an interband cascade laser near 3.6 ?m, Sensors and Actuators B: Chemical, 221, 1062-1068 (2015).
  • W. Ren*, R. M. Spearrin, D. F. Davidson, and R. K. Hanson, Experimental and Modeling Study of the Thermal Decomposition of C3-C5 Ethyl Esters Behind Reflected Shock Waves, The Journal of Physical Chemistry A, 118(10), 1785-1798 (2014).
  • W. Ren*, W. Jiang, and F. K. Tittel, Single-QCL-based absorption sensor for simultaneous trace-gas detection of CH4 and N2O, Applied Physics B, 117(1), 245-251 (2014).
  • W. Ren*, W. Jiang, N. P. Sanchez, P. Patimisco, V. Spagnolo, C. Zah, F. Xie, L. C. Hughes, R. J. Griffin, and F. K. Tittel, Hydrogen peroxide detection with quartz-enhanced photoacoustic spectroscopy using a distributed-feedback quantum cascade laser, Applied Physics Letters, 104, 041117 (2014).
  • W. Ren*, K.-Y. Lam, S. H. Pyun, A. Farooq, D. F. Davidson, and R. K. Hanson, Shock tube/laser absorption studies of the decomposition of methyl formate, Proceedings of the Combustion Institute, 34(1), 453-461 (2013).
  • W. Ren, E. Dames, D. Hyland, D. F. Davidson*, and R. K. Hanson, Shock tube study of methanol, methyl formate pyrolysis: CH3OH and CO time-history measurements, Combustion and Flame, 160(12), 2669-2679 (2013).
  • W. Ren*, A. Farooq, D. F. Davidson, and R. K. Hanson, CO concentration and temperature sensor for combustion gases using mid-infrared laser absorption near 4.7 ?m, Applied Physics B, 107(3), 849-860 (2012).
  • W. Ren*, D. F. Davidson, and R. K. Hanson, IR laser absorption diagnostic for C2H4 in shock tube kinetics studies, International Journal of Chemical Kinetics, 44(6), 423-432 (2012).
  • W. Ren*, J. B. Jeffries, and R. K. Hanson, Temperature sensing in shock-heated evaporating aerosol using wavelength-modulation absorption spectroscopy of CO2 near 2.7 ?m, Measurement Science and Technology, 21 (2010).