Chuwen Lan, Ke Bi, Baiwei Li, Yanjiao Zhao, and Zhaowei Qu
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-25-23-29155
A flexible all-dielectric metamaterials composed of single-layer ceramic microspheres embedded in elastomeric medium is proposed and experimentally demonstrated in terahertz (THz) range. The THz waves are strongly confined in the high-permittivity and low-loss ceramic (ZrO2) microspheres resulting in remarkable Mie magnetic resonances, which can be effectively tuned with strained elastomeric medium. The first resonance mode would experience red shifts with the increased strain along magnetic field direction, while it would experience blue shifts with the increased strain along electric field direction. These properties are well explained by dipole-dipole coupling theory. This work provides an easy and cheap method to obtain tunable all-dielectric metamaterials in THz range.
© 2017 Optical Society of America under the terms of the OSA Open Access Publishing
No comments:
Post a Comment