title: Electric field tuning of plasmonic response of nanodot array in liquid crystal matrix.
abstract: In this work we demonstrate the feasibility of electric-field tuning of the plasmonic spectrum of a novel gold nanodot array in a liquid crystal matrix. As opposed to previously reported microscopically observed near-field spectral tuning of individual gold nanoparticles, this system exhibits macroscopic far-field spectral tuning. The nanodot-liquid crystal matrix also displays strong anisotropic absorption characteristics, which can be effectively described as a collective ensemble within a composite matrix in the lateral dimension and a group of noninteracting individual particles in the normal direction. The effective medium model and the Mie theory are employed to describe the experimental results.
authors.affiliation: Division of Engineering and Department of Physics, Brown University, 182 Hope Street, Box D, Providence, RI 02912, USA. pavel_kossyrev@brown.edu
authors.forename: Pavel A
authors.initials: PA
authors.lastname: Kossyrev
authors.forename: Aijun
authors.initials: A
authors.lastname: Yin
authors.forename: Sylvain G
authors.initials: SG
authors.lastname: Cloutier
authors.forename: David A
authors.initials: DA
authors.lastname: Cardimona
authors.forename: Danhong
authors.initials: D
authors.lastname: Huang
authors.forename: Paul M
authors.initials: PM
authors.lastname: Alsing
authors.forename: Jimmy M
authors.initials: JM
authors.lastname: Xu