Multi-Direction-Tunable Three-Dimensional Meta-Atoms for Reversible Switching between Midwave and Long-Wave Infrared Regimes

• DOI: 10.1021/acs.nanolett.6b03210
• Publication Date: 2016-10-24T18:26:26Z
• Authors: Yifei Mao; Yini Pan; Weihua Zhang; Rui Zhu; Jun Xu; Wengang Wu
• Keywords: Reflection

We introduce an electromechanically tunable metasurface composed of array three-dimensional nanosplit-rings for reversible and large-range changes optical characteristics in infrared (IR) regime. When a current is induced or withdrawn, each nanosplit ring the surface can deform multi directions consequently become closed (OFF) open (ON) state. Theoretical experimental results manifest that, as dynamically manipulated between ON OFF states, corresponding resonance absorption will reversibly switch long wave (around 10.4 μm) midwave 6.3 IR regimes, two key spectral windows, relative reflection reach up to 95%.