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      Dielectric Loss Mechanism in Electromagnetic Wave Absorbing Materials

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          Abstract

          Electromagnetic (EM) wave absorbing materials play an increasingly important role in modern society for their multi‐functional in military stealth and incoming 5G smart era. Dielectric loss EM wave absorbers and underlying loss mechanism investigation are of great significance to unveil EM wave attenuation behaviors of materials and guide novel dielectric loss materials design. However, current researches focus more on materials synthesis rather than in‐depth mechanism study. Herein, comprehensive views toward dielectric loss mechanisms including interfacial polarization, dipolar polarization, conductive loss, and defect‐induced polarization are provided. Particularly, some misunderstandings and ambiguous concepts for each mechanism are highlighted. Besides, in‐depth dielectric loss study and novel dielectric loss mechanisms are emphasized. Moreover, new dielectric loss mechanism regulation strategies instead of regular components compositing are summarized to provide inspiring thoughts toward simple and effective EM wave attenuation behavior modulation.

          Abstract

          Electromagnetic wave loss mechanism investigation for dielectric absorbing materials is of great importance to guide the preparation of novel high‐performance absorbers. This review provides comprehensive insights into dielectric loss mechanisms and clarifies some misunderstandings and ambiguous concepts for each mechanism. In‐depth dielectric loss study and novel dielectric loss mechanisms regulation strategies are also highlighted.

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          Author and article information

          Contributors
          wuhongjing@nwpu.edu.cn
          Journal
          Adv Sci (Weinh)
          Adv Sci (Weinh)
          10.1002/(ISSN)2198-3844
          ADVS
          Advanced Science
          John Wiley and Sons Inc. (Hoboken )
          2198-3844
          07 February 2022
          April 2022
          : 9
          : 10 ( doiID: 10.1002/advs.v9.10 )
          : 2105553
          Affiliations
          [ 1 ] MOE Key Laboratory of Material Physics and Chemistry under Extraordinary School of Physical Science and Technology Northwestern Polytechnical University Xi'an 710072 P. R. China
          Author notes
          Author information
          https://orcid.org/0000-0002-5575-3224
          Article
          ADVS3517
          10.1002/advs.202105553
          8981909
          35128836
          8c82065e-08e8-4928-b8cf-bd9251da1f2d
          © 2022 The Authors. Advanced Science published by Wiley‐VCH GmbH

          This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

          History
          : 08 January 2022
          : 02 December 2021
          Page count
          Figures: 15, Tables: 1, Pages: 24, Words: 16062
          Funding
          Funded by: National Science Foundation of China , doi 10.13039/501100001809;
          Award ID: 51872238
          Award ID: 21806129
          Award ID: 52074227
          Funded by: Fundamental Research Funds for the Central Universities , doi 10.13039/501100012226;
          Award ID: 3102018zy045
          Award ID: 3102019AX11
          Funded by: Natural Science Basic Research Plan in Shaanxi Province of China
          Award ID: 2020JM‐118
          Award ID: 2017JQ5116
          Funded by: The Analytical & Testing Center of Northwestern Polytechnical University
          Categories
          Review
          Reviews
          Custom metadata
          2.0
          April 5, 2022
          Converter:WILEY_ML3GV2_TO_JATSPMC version:6.1.3 mode:remove_FC converted:05.04.2022

          dielectric loss,electromagnetic wave absorption,mechanism

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