Direct visualization of optical frequency invisibility cloak based on silicon nanorod array

Opt Express. 2009 Jul 20;17(15):12922-8. doi: 10.1364/oe.17.012922.


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.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Computer Simulation
  • Electrons
  • Equipment Design
  • Imaging, Three-Dimensional
  • Materials Testing
  • Microscopy / methods*
  • Nanoparticles / chemistry*
  • Optics and Photonics*
  • Silicon / chemistry*


  • Silicon