Open AccessAchieving a tunable metasurface based on a structurally reconfigurable array using SMA
Author(s) -
Xin Chen,
Junli Gao,
Bonan Kang
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.004300
Subject(s) - sma* , optics , controllability , computer science , thermal , finite difference time domain method , planar , materials science , electronic engineering , physics , engineering , mathematics , algorithm , meteorology , computer graphics (images)
We introduce a structurally reconfigurable metasurface which is made of shape memory alloys (SMA). It could change the morphology of the unit cells repeatedly as we expect in response to a thermal stimulus and realize a tuning range from 13.3GHz to 17.2GHz for both polarizations simultaneously. Equivalent circuit models describe the operational principle and design methodology, the physical mechanism is interpreted with the variation of surface current distribution on the structure. The experimental results coincide with the numerical simulations, making the all-metal metasurface an attractive choice for manipulating the electromagnetic wave in a wide range of spectrums with the merits of higher controllability for dynamic behavior and greater freedom for design and manufacturing.