I have 30 years of experience, and specialize in the field of spectroscopy and photonic crystals with specific knowledge in the areas of Raman spectroscopy, photonic crystal materials, explosives and chemical sensing devices. I have published on such topics as photonic crystal materials, Raman spectroscopy and spectroscopy in general. I have testified on Ramann spectroscopy. I am a distinguished professor of chemistry with 27 patents and >270 publications and a scientific founder of two start up companies and numerous licenses based on the technology we invented.