title: Interface Polarization Strategy to Solve Electromagnetic Wave Interference Issue.
abstract: Design of an interface to arouse interface polarization is an efficient route to attenuate high-frequency electromagnetic waves. The attenuation intensity is highly related to the contact area. To achieve stronger interface polarization, growing metal oxide granular film on graphene with a larger surface area seems to be an efficient strategy due to the high charge carrier concentration of graphene. This study is devoted to fabricating the filmlike composite by a facile thermal decomposition method and investigating the relationship among contact area, polarization intensity, and the type of metal oxide. Because of the high-frequency polarization effect, the composites presented excellent electromagnetic wave attenuation ability. It is shown that the optimal effective frequency bandwidth of graphene/metal oxide was close to 7.0 GHz at a thin coating layer of 2.0 mm. The corresponding reflection loss value was nearly -22.1 dB. Considering the attenuation mechanism, interface polarization may play a key role in the microwave-absorbing ability.
authors.affiliation: College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics , Nanjing 211100, PR China.|School of Materials Sciences and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore.
authors.forename: Hualiang
authors.initials: H
authors.lastname: Lv
authors.affiliation: School of Materials Science and Engineering, Jiangsu University of Science and Technology , Zhenjiang, Jiangsu 212003, China.
authors.forename: Yuhang
authors.initials: Y
authors.lastname: Guo
authors.affiliation: Institute of Materials for Energy and Environment, State Key Laboratory Breeding Base of New Fiber Materials and Modern Textile, College of Materials Science and Engineering, Qingdao University , Qingdao 266071, PR China.
authors.forename: Guanglei
authors.initials: G
authors.lastname: Wu
authors.affiliation: College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics , Nanjing 211100, PR China.
authors.forename: Guangbin
authors.identifier: http://orcid.org/0000-0002-5150-3949
authors.initials: G
authors.lastname: Ji
authors.affiliation: College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics , Nanjing 211100, PR China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: School of Materials Sciences and Engineering, Nanyang Technological University , 50 Nanyang Avenue, Singapore 639798, Singapore.
authors.forename: Zhichuan J
authors.initials: ZJ
authors.lastname: Xu
keywords: contact area; effective absorption frequency; electromagnetic interference; interface polarization; metal oxide granular film