Jason started in our group in 2004. His research was on the investigation of novel metallic substrates for surface-enhanced spectroscopy. He followed up on our work on the applications of arrays of nanoholes as substrates for surface-enhanced Raman scattering (SERS). He performed a systematic investigation of the optical properties of nanohole structures in copper films. He also studied the use of scratched gold films as polarization-sensitive substrates for SERS. His results indicated that these nanostructures can be used to subtract contributions from unwanted background during spectroelectrochemical investigations. Jason defended his Ph.D. thesis in 2008 and it is now working as a postdoctoral fellow in Xiamen, China, with Dr. Tian.