A temperature-activated nanocomposite metamaterial absorber with a wide tunability

被引：24
作者：
Li, Weiwei [1 ,2 ]
Zhao, Lingyu [1 ,2 ]
Dai, Zhaohe [1 ]
Jin, Hao [1 ]
Duan, Feng [1 ,2 ]
Liu, Junchao [1 ,2 ]
Zeng, Zhihui [1 ]
Zhao, Jun [1 ]
Zhang, Zhong [1 ]
机构：
[1] Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Nanosyst & Hierarch Fabricat, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100149, Peoples R China
来源：
NANO RESEARCH | 2018年 / 11卷 / 07期
基金：
中国国家自然科学基金;
关键词：
composite materials; flexible electronics; metamaterials; polymeric materials; shape memory polymers; CARBON NANOTUBES; SURFACE; GRAPHENE; DESIGN; ELASTICITY; STABILITY;
D O I：
10.1007/s12274-018-1973-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Novel thin and flexible broadband electromagnetic microwave absorbers are realized with nanocomposites and achieve a wide frequency tunability (from 10 to 17.2 GHz) by actively adjusting the resistance. The proposed absorbers are fabricated by scalable screen printing of optimized nanoparticle ink onto the flexible dielectric composite substrates. Based on the shape memory effects of the substrate and piezoresistive effect of the nanocomposite frequency selective surface, a controllable sheet resistance, and thereby tunable wave absorption performance, can be realized in a temperature-activated and dynamically stable manner. The results provide new dimensions for the design of active electromagnetic devices by utilizing previously underestimated intrinsic properties of the artificial materials and the smart behavior of polymer-based nanocomposites.
引用
收藏
页码：3931 / 3942
页数：12
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