@article{8be7bf66a154467fbe13f053330488ed,
title = "Demonstration of Negative Refractive Index in a Three-Dimensional Optical Metamaterial",
author = "Jason Valentine and Shuang Zhang and Thomas Zentgraf and Erick Ulin-Avila and Genov, \{Dentcho A.\} and Guy Bartal and Xiang Zhang",
note = "We report experimental realization of the first three-dimensional (3-D) optical negative index metamaterial. We measure the bulk refractive index using a 3-D prism and Snell's Law, unambiguously demonstrating negative phase propagation in the material. {\textcopyright} 2008 Optical Society of America PDF Article",
year = "2008",
month = may,
day = "4",
language = "American English",
journal = "Quantum Electronics and Laser Science Conference",
}