Tunable electromagnetic wave-absorbing capability achieved in liquid-metal-based nanocomposite. (25th March 2019)

• Record Type: Journal Article
• Authors: Ou, Meilian; Liu, Huiqiang; Chen, Xuechen; Chu, Sheng; Chu, Guang
• Is Part Of: Applied physics express. Volume 12:Number 4(2019)
• Publication Date: 2019-03-25
• Subjects: materials -- GaInSn -- composite -- electromagnetic absorption -- wide absorption band; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.7567/1882-0786/ab077c
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: A Galinstan (GaInSn) liquid-metal-(LM-)based composite consisting of polydimethylsiloxane (PDMS) filled with GaInSn nanoparticles is developed for application as a tunable electromagnetic-(EM-)absorbing material. The minimum reflection loss (RL) of the GaInSn/PDMS composite is −19.3 dB at 14.8 GHz at a thickness of 2 mm, and the bandwidth over which the RL is lower than −10.0 dB is 9.9 GHz. The RL peak shifts from 14.8 GHz to 9.7 GHz under elongation by 30% shape deformation. After release, the absorption properties of the previously stretched sample almost returning to their original values suggests an approach to construct a reversibly tunable GaInSn LM-based EM-absorbing system.