Photonic crystals can be considered the optical analogues of electronic semiconductor materials. Their photonic bandgap can be engineered similar to impurity doping. Colloidal nanoparticles allow for a convenient three-dimensional photonic crystal platform. We have demonstrated different approaches towards bandgap engineering, enhanced energy transfer and lasing in such self-assembled photonic crystals. Our lecture will focus on the inexpensive bottom-up approach to 3D photonic crystals offered from a physical chemistry viewpoint (in contrast to the top-down physical approach offered by lithography and etching).
"Colloidal Photonic Crystals: A convenient bottom-up platform for photonic bandgap engineering", Dr. Koen Clays, Professor, Department of Chemistry, Katholieke Universiteit Leuven Belgium, Germany
Wednesday, September 9, 2015 - 12:00pm