Researcher Portfolio

Li Xiang, Leon (Dr)
Senior Research Engineer III
6319 4481
Precision Measurements
Introduction:Received PhD in 1996, Tsing Hua University, P.R. China.  Worked in Aiwa Singapore Pte Ltd  for five years  as a Senior Engineer with expertise in mechanical design, firmware development ,and optical data storage technology.  He joined Dataplay Pte Ltd in 2001 as a Senior Optical Engineer, in charge of optical pickup system and failure analysis.  He has been working in SIMTech since Aug 2001. His main research area is in optical measurement and inspection technology.
Research Interest:Precision dimensional measurement with optical technology, interferometer, wavefront sensing, bio-imaging and measurement, defect inspection
BioNotes:PhD, Beijing Tsinghua University in 1996
MEng, Beijing Tsinghua University in 1992
  1. Sherwin ting, S. J. Liew, F. Japson, F. Shang, W. K. Chong, S. Reuveny, J. Y. Tham, X. Li and S. Oh, "Time-resolved Video Analysis and Management System for Monitoring Cardiomyocyte Differentiation Processes and Toxicology Assays", Biotechnology Journal, vol. 9(5), pp. 675-683 (MAY-2014)


  2. W. K. Chong, X. Li and Y. C. Soh, "Harnessing Spectral Property of Dual Wavelength White LED to improve Vertical Scanning Interferometry", Applied Optics, vol. 52(19), pp. 4652-4662 (July2013)


  3. C. M. Tan,B. K. Chen,X. Li,S. H. Chen, "Rapid Light Output Degradation of White GaN Based Packaged LED in the Early Stage of Humidity Test,” IEEE Transactions on Device and Material Reliability (Jan-2013)


  4. W. K. Chong,X. Li,Y. C. Soh, "Spectral Effects of Dual Wavelength Low Coherence Light Source in White Light Interferometry", Optics and Laser in Engineering, pp. 651-655, vol. 51, no. 6 (Jun-2013)


  5. W. J. Guo, L. Zhao, X. Li and I. M. Chen, "Optimization of scanning strategy of digital Shack–Hartmann wavefront sensing ", Applied Optics, vol. 51(1), pp. 121-125 (Jan-2012)


  6. W. K. Chong, X. Li and Y. C. Soh, "Interferometry / Book 2", pp. 81-98, InTech,  (01-Mar-2012)


  7. W. K. Chong, X. Li and S. Wijesoma, "Computationally efficient signal modeling for vertical scanning interferometry", Applied Optics, vol. 49(26), pp. 4990-4994 (Sep-2010)


  8. W. K. Chong, X. Li and S. Wijesoma, "Video-based interferogram analysis for measuring influence of vibration to white light interferometry", Key Engineering Materials, vol. 447-448(00), pp. 599-603 (Sep 2010)


  9. W. K. Chong, X. Li and S. Wijesoma, "Effects of phosphor-based LED on vertical scanning interferometry", Optics Letters, vol. 35(17), pp. 2946-2948 (Aug 2010)


  10. X. M. Yin, L. P. Zhao, X. Li and Z. P. Fang, "Online Surface Measurement with Digital Shack-Hartmann Wavefront Sensor", International Journal of Nanoscience, vol. 9(2), pp. 1-10 (apr-2010)


Best intellectual property and patent, SIMTech, 2004
Borderless Award, A*STAR, 2012

Borderless Awards, Ministry of Trade and Industry, 2013