|Description||Gururaj Naik, Ph.D.|
Electrical & Computer Engineering
Hot Nanophotonics: From Hot Carriers
to Hot Thermal Emitters
Nanophotonics has enabled extreme control on the flow of light leading to revolutionary applications including imaging, and chemical sensing. Not only does nanophotonics allow the extreme control on light flow, but also on heat flow. The interplay between light and heat at the crossroads of nanophotonics leads to many promising applications in energy conversion. In this talk, I will describe devices that allow efficient renewable energy harvesting by achieving extreme anisotropy and asymmetry.
First, I will discuss how hot carriers, commonly considered loss pathways in plasmonic devices, can convert low energy photons to higher energies. This new upconversion scheme promises to be broadband, tunable, and an order of magnitude more efficient than existing solid-state upconversion schemes. Next, I will describe a renewable energy harvesting device based on nanophotonic selective thermal emitters. I will show how asymmetry and anisotropy in nanophotonic devices lead to high efficiency. The extreme control on light and heat flow would open new avenues for addressing one of the greatest technological challenges of our time – providing clean energy to the world.
For more information contact: Dr. Anzhong Wang 254-710-2276