image: This is the scheme of the metamaterial composed of three-dimensional gold helices (foreground). The rear of the image shows an oblique-view electron micrograph of a fabricated structure. The red and white spiral is an artistic visualization of circularly polarized light. This image relates to an article that appeared in the Aug. 20, 2009, issue of Science Express, published by AAAS. The study, by Justyna K. Gansel of Universität Karlsruhe and colleagues, was titled, "Gold Helix Photonic Metamaterial as Broadband Circular Polarizer." view more
Credit: Image © <i>Science</i>/AAAS