Decker, ManuelZhao, RSoukalis, CMLinden, StefanWegener, M2015-12-13May 16-219781557528902http://hdl.handle.net/1885/71763We investigate chiral photonic metamaterials composed of stacked layers of twisted split-ring-resonators. Our design allows for strong circular dichroism of up to 33% at optical frequencies. The experiments are in good agreement with theory.Keywords: Chiral photonics; Circular dichroism; Optical frequency; Ring resonator; Split-ring resonator; Stacked layer; Electronic equipment; Metamaterials; Resonators; Dichroism20102016-02-24