Condensed Matter Seminar: Overcoming photothermal convection in plasmonic optical tweezers, bioreactors and microbial carbon fixation
Jack Ya-Tang Yang, Department of Electrical Engineering, National Tsing Hua University, Hsinchu, Taiwan
Abstract:
Plasmon optical trapping(POT) can overcome the diffraction limits of conventional far-field optical trap techniques and permit trapping of nano objects as small as a single protein molecule. Photothermal convection has been adversely disrupt the particle trapping in plasmonic optical tweezer and remains a major bottleneck. I will discuss our work on the trapping of nanoparticles for plasmon-enhanced two dimensional optical lattices. In particular, I will discussion two strategies suppress the plasmonic photothermal convection by using near zero thermal expansion coefficient of water at low temperature and using silicon carbide substrate with low optical adsorption, high thermal conductivity. Besides, I will also briefly discuss the recent work done for mini-bioreactors and microbial carbon fixation from physicist’s point of view.
Event Organizer: Dr. Moshe Goldstein
