衰减
材料科学
液态金属
谐振器
微流控
反射(计算机编程)
光学
光电子学
吸收(声学)
分裂环谐振器
炸薯条
物理
电气工程
复合材料
纳米技术
工程类
计算机科学
程序设计语言
作者
Xu Gao,Ping Li,Yang Zhou,Lingchun An,Zhenhai Wang,Jiarui Guo,Nuo Xu,Wei Wang
标识
DOI:10.1109/jeds.2022.3194120
摘要
We demonstrated a liquid metal based microfluidic chip that enabled consistent, continuous and large liquid metal unit structure array reconfiguration. The chips were assembled into a metasurface, which preliminary achieved controllable electromagnetic wave reflection attenuation. The chip contained a 5 × 6 Galinstan split-ring resonator (SRR) array, and the SRRs could be reconfigured continuously by NaOH solution pressure driven. A fin shaped microvalve was designed and integrated onto the chip, which could withstand a high fluid driving pressure (over 210 kPa), so the SRRs could be reconfigured with a large split angle. The flow resistance of each SRR chamber was analyzed for consistent and robust SRRs deformation. The SRRs enabled more than 250∘ reconfiguration and showed consistent deformation with a standard derivation less than 8.5∘. The metasurface showed 7.5 dB and 13.5 dB attenuation at 3 GHz and 4 GHz respectively. Also, with the different split angles, there could be three attenuation peaks that reach -10 dB when the frequency ranged from 2.9-3.1 GHz, 3.7-4.2 GHz and 4.8-5.0 GHz, respectively. The metasurface we proposed can be potentially used in multiband controllable electromagnetic wave absorption.
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