Transport and trapping in two-dimensional nanoscale plasmonic optical lattice.
We report the transport and trapping behavior of 100 and 500 nm diameter nanospheres in a plasmon-enhanced two-dimensional optical lattice. An optical potential is created by a two-dimensional square lattice of gold nanostructures, illuminated by a Gaussian beam to excite plasmon resonance. The nanoparticles can be guided, trapped, and arranged using this optical potential. Stacking of 500 nm nanospheres into a predominantly hexagonal closed pack crystalline structure under such a potential is also reported.
Department of Electrical Engineering, ‡Department of Chemistry, §Center for Nanotechnology, Materials Sciences, and Microsystems, and ∥Frontier Research Center on Fundamental and Applied Science of Matters, National Tsing Hua University , Hsinchu 30013, Taiwan, R.O.C.
Kuan-Yu
KY
Chen
An-Ting
AT
Lee
Chia-Chun
CC
Hung
Jer-Shing
JS
Huang
Ya-Tang
YT
Yang