Three-Dimensional Invisibility Cloak at Optical WavelengthsSee also BBC News.
Tolga Ergin,1,2,*, Nicolas Stenger,1,2,* Patrice Brenner,2 John B. Pendry,3 Martin Wegener1,2,4
A three-dimensional invisibility-cloaking structure operating at optical wavelengths based on transformation optics has been designed and realized. Our blueprint uses a woodpile photonic crystal with tailored polymer filling fraction to hide a bump in a gold reflector. Structures and controls are fabricated by direct laser writing and characterized by simultaneous high-numerical-aperture far-field optical microscopy and spectroscopy. Cloaking operation with large bandwidth of unpolarized light from 1.4- to 2.7-µm wavelength is demonstrated for viewing angles up to 60 degrees.1 Institut für Angewandte Physik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany.
2 DFG-Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany.
3 Blackett Laboratory, Imperial College London, London SW7 2AZ, UK.
4 Institut für Nanotechnologie, Karlsruhe Institute of Technology (KIT), D-76021 Karlsruhe, Germany. firstname.lastname@example.org
There was no report of magic being involved at all.