PHYSICS SEMINAR SERIES Easter 2015

The Reverse-Switching Effect in

Nano-hole Arrays of Silver and VO2

A. Brita Brudvig C’15

Tuesday, April 21, 2015

Woods Labs 216 7:00–8:00pm

Brita is a senior physics and mathematics major from Red Hook, New York. She is a captain of the Sewanee women's lacrosse team and a member of Phi Beta Kappa, Sigma Pi Sigma, and Omicron Delta Kappa. Previously, Brita has done math research on campus and worked at Oak Ridge National Laboratory.

Incident light on a sub-wavelength size array of holes of certain materials has an interesting optical property called enhanced optical transmission (EOT). Surface plasmon interaction allows more light to get though that we would expect. Layering different materials can help us better understand how this phenomenon works. Vanadium dioxide has a remarkable phase transition that makes it particularly useful in studying EOT. We look at the transmission of light on different layouts of nano-hole arrays and vary the dielectric coefficient of the hole itself.

For additional information contact: Dr. Randolph S. Peterson (931) 598-1550 rpeterso@sewanee.edu