1. Open Access Kent State
  2. Electro-Optic Effects in Colloidal Dispersion of Metal Nano-Rods in Dielectric Fluid
Author(s)
Abstract

In modern transformation optics, one explores metamaterials with properties that vary from point to point in space and time, suitable for application in devices such as an "optical invisibility cloak" and an "optical black hole". We propose an approach to construct spatially varying and switchable metamaterials that are based on colloidal dispersions of metal nano-rods (NRs) in dielectric fluids, in which dielectrophoretic forces, originating in the electric field gradients, create spatially varying configurations of aligned NRs. The electric field controls orientation and concentration of NRs and thus modulates the optical properties of the medium. Using gold (Au) NRs dispersed in toluene, we demonstrate electrically induced change in refractive index on the order of 0.1.
Format
Article
Identifier(s)
10.3390/ma4020390
Publication Date
2011-02-14
Publication Title
Materials
Volume
4
Issue
2
First Page
390
Last Page
416
Keywords
Subject
Rights
http://rightsstatements.org/vocab/InC/1.0/
Community
Chemical Physics Interdisciplinary Program
Comments

Available on publisher's site at
Permalink https://oaks.kent.edu/cpippubs/193
Golovin, A., Xiang, J., Park, H.-S., Tortora, L., Nastishin, Y., Shyiyanovskii, S., & Lavrentovich, O. (2011). Electro-Optic Effects in Colloidal Dispersion of Metal Nano-Rods in Dielectric Fluid (1–). Materials. https://doi.org/10.3390/ma4020390
Golovin, Andrii, Jie Xiang, Heung-Shik Park, Luana Tortora, Yuriy Nastishin, Sergij Shyiyanovskii, and Oleg Lavrentovich. 2011. “Electro-Optic Effects in Colloidal Dispersion of Metal Nano-Rods in Dielectric Fluid”. Materials. https://doi.org/10.3390/ma4020390.
Golovin, Andrii, et al. Electro-Optic Effects in Colloidal Dispersion of Metal Nano-Rods in Dielectric Fluid. Materials, 14 Feb. 2011, https://doi.org/10.3390/ma4020390.