Silicon nanostructure cloak operating at optical frequencies
Optics
2009-09-30 v2
Abstract
The ability to render objects invisible using a cloak - not detectable by an external observer - for concealing objects has been a tantalizing goal1-6. Here, we demonstrate a cloak operating in the near infrared at a wavelength of 1550 nm. The cloak conceals a deformation on a flat reflecting surface, under which an object can be hidden. The device has an area of 225 um2 and hides a region of 1.6 um2. It is composed of nanometre size silicon structures with spatially varying densities across the cloak. The density variation is defined using transformation optics to define the effective index distribution of the cloak.
Cite
@article{arxiv.0904.3508,
title = {Silicon nanostructure cloak operating at optical frequencies},
author = {Lucas H. Gabrielli and Jaime Cardenas and Carl B. Poitras and Michal Lipson},
journal= {arXiv preprint arXiv:0904.3508},
year = {2009}
}
Comments
12 pages, 5 figures