Direct visualization of optical frequency invisibility cloak based on silicon nanorod array.
A new invisibility cloak was recently proposed for hiding objects in front of a highly reflecting mirror. This cloak requires only modest values of optical constants with minimal anisotropy and thus can be implemented by using non-resonant dielectric materials, making it an ideal system for optical frequency operation. We implemented the cloak using an array of silicon nanorods fabricated by electron-beam lithography. We then directly visualized the cloaking effect by monitoring the light propagation inside the device using the near-field optical microscopy.
Lee
J H
JH
Department of Electrical and Computer Engineering, University of Colorado, Boulder, CO 80309, USA.
Blair
J
J
Tamma
V A
VA
Wu
Q
Q
Rhee
S J
SJ
Summers
C J
CJ
Park
W
W
D003198:Computer Simulation; D004583:Electrons; D004867:Equipment Design; D021621:Imaging, Three-Dimensional; D008422:Materials Testing; D008853:Microscopy / Q000379:methods*; D053758:Nanoparticles / Q000737:chemistry*; D055095:Optics and Photonics; D012825:Silicon / Q000737:chemistry*
D012825:Silicon