Research progress of graphene-based microwave absorbing materials in the last decade
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Research progress of graphene-based microwave absorbing materials in the last decade Jun-Sheng Li,a) Hui Huang, Yong-Jiang Zhou, Chao-Yang Zhang, and Zhao-Ting Li Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defense Technology, Changsha 410073, People’s Republic of China (Received 22 September 2016; accepted 17 February 2017)
With the rapid development of electronic information and technology, especially the explosive advance of novel electronic devices, ultra-wideband radar detector and satellite communication, the elimination of adverse electromagnetic waves (EWs) effectively is very necessary both for electronic safety and national defense security. As one of the important material basis for controlling adverse EW pollution, compatibility, shielding, and stealth capability of weaponry, microwave absorbing materials has long been an area of intense research activity. Graphene-based materials have attracted great interests for microwave absorption in recent years due to the unique structure and physicochemical properties of graphene, such as high specific surface area, ultrathin thickness, large interface, optical transmittance, and tunable conductive properties, etc. In this paper, the properties and absorption behavior of different kinds of microwave absorbing materials based on graphene were reviewed and discussed in detail. In addition, the perspective of the current challenges and key issues for achieving better microwave absorption performance of the graphene-based materials are provided.
I. INTRODUCTION
With the extensive application of radar detection in military affairs and the rapid development of electronic devices, microwave absorbers have always been a hot subject of current research owing to their high absorption capacity in reduction of radar signature of weapons and equipment as well as in control of electromagnetic interference and pollution among electronic devices. The research of efficient microwave absorbing materials for preventing harmful electromagnetic wave (EW) pollution and stealth capability of weaponry has the vital significance.1–5 To date, ferrites, metallic magnets, dielectric ceramics, conductive polymer as well as their hybrids play a leading role in microwave absorbing materials. However, the defects including high density, phase instability, corrosion, low absorption capacity, and narrow absorption band have greatly restricted such materials’ practical application in microwave absorption (MA).6,7 Generally, an ideal microwave absorbing materials usually with the desired properties include high MA capacity, broad absorption bandwidth, thin thickness, low density, good thermal stabilities, and flexible mechanical strength, etc.8 The behavior of a microwave absorbing material mainly depends on its dielectric loss, magnetic Contributing Editor: Mauricio Terrones a) Address all correspondence to this author. e-mail: [email protected] DOI: 10.1557/jmr.2017.80
loss, and impedance matching characteristic.9 As for nonmagnetic materi
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