Graz Advanced School of Science

Vortragender:

Anatoliy Pinchuk, Associate Professor,

Department of Physics and Energy Science,

University of Colorado at Colorado Springs, CO

Abstract:

Plasmonic nanostructures have the potential to improve the sensitivity of biochemical sensors, the efficiency of solar cells, and the resolution of near-field optical microscopy, to name just a few.

Metamaterials with negative indices of refraction can be used to improve the directivity of a microwave antenna. In this talk, I will present our recent results on laser deposition of silver microand nanostructures on a glass substrate, laser light-to-heat energy transformation with gold nanoparticles, and s-shaped metamaterials designed to exhibit a negative index of refraction over

broad band microwave frequency regions. Laser beams can be used to deposit fluorescent silver nanoparticles in a solution onto a substrate, potentially opening the door for 3D mesoscale printing technology. The light energy of a laser can be efficiently transformed into heat by using gold nanoparticles with their SPR tuned to the excitation wavelength of the laser. These studies are crucial

for practical applications of gold nanoparticles in nanotechnology and bioengineering, such as enhancing the treatment efficiency of laser surgery.