Broadband and Tunable High-Performance Microwave Absorption of an Ultralight and Highly Compressible Graphene Foam

• Published in: Advanced materials (Weinheim) Vol. 27; no. 12; pp. 2049 - 2053
• Main Authors: Zhang, Yi, Huang, Yi, Zhang, Tengfei, Chang, Huicong, Xiao, Peishuang, Chen, Honghui, Huang, Zhiyu, Chen, Yongsheng
• Format: Journal Article
• Language: English
• Published: Germany Blackwell Publishing Ltd 25.03.2015
• Subjects: Absorption, Radiation; Broadband; broadband absorption; Compressibility; Compressing; Compressive properties; Foams; Graphene; graphene foams; Graphite - chemistry; high compressibility; Mechanical Phenomena; Microwave absorption; Microwaves; Oxides - chemistry; Three dimensional; ultralow density materials; high compressibility; ultralow density materials; broadband absorption; microwave absorption; graphene foams
• ISSN: 0935-9648; 1521-4095
• DOI: 10.1002/adma.201405788

The broadband and tunable high‐performance microwave absorption properties of an ultralight and highly compressible graphene foam (GF) are investigated. Simply via physical compression, the microwave absorption performance can be tuned. The qualified bandwidth coverage of 93.8% (60.5 GHz/64.5 GHz) is achieved for the GF under 90% compressive strain (1.0 mm thickness). This mainly because of the 3D conductive network.