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연구성과 > 금주의 우수논문

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SCI Article

Self-healing graphene oxide-based composite for electromagnetic interference shielding
성명 김선정()
소속 공과대학 생체공학전공
캠퍼스
우수선정주 2019년 11월 2째주
Author Sim, Hyeon Jun (Dept Biomed Engn); Lee, Duck Weon (Dept Biomed Engn); Kim, Hyunsoo (Dept Biomed Engn); Jang, Yongwoo (Dept Biomed Engn); 김선정 (Dept Biomed Engn);
Corresponding Author Info Kim, SJ (reprint author), Hanyang Univ, Ctr Self Powered Actuat, Dept Biomed Engn, Seoul 04763, South Korea.
E-mail 이메일 아이콘sjk@hanyang.ac.kr
Document Type Article
Source CARBON Volume:155 Issue: Pages:499-505 Published:2019
Times Cited 0
External Information http://dx.doi.org/10.1016/j.carbon.2019.08.073
Abstract The electromagnetic pollution issues have been arising from the fast-growing development for electronic devices. Hence, the demand for materials with high electromagnetic interference (EMI) shielding performance has increased. Here, we developed self-healable, flexible and printable graphene oxide/silver nanowire films and textiles with excellent EMI shielding performance. The maximum electromagnetic interference shielding effectiveness (EMI SE) of 92 dB was recorded for an 18 mu m-thickness film. In addition, the specific EMI shielding effectiveness was 31 dB cm3/g or 48,275 dB cm2/g when normalized to film thickness. Both values are higher than reported EMI shielding products. The composite film and coated textile were tolerant of damage induced by cracking or scratching. Damaging the films by cracking reduced the electrical conductivity, mechanical properties, and the EMI SE was decreased from 72 dB to 56 dB at 8.2 GHz. After the healing process, the EMI SE was recovered to 71 dB and mechanical properties restored. The EMI SE of textile reached a maximum of 30 dB which is suitable to use as a commercial EMI shielding product. In addition, the textile exhibited high flexibility, and showed excellent mechanical stability with no change in performance after 1000 bending cycles. (C) 2019 Elsevier Ltd. All rights reserved.
Web of Science Categories Chemistry, Physical; Materials Science, Multidisciplinary
Funding Creative Research Initiative Center for Self-Powered Actuation in Korea; Australian Research CouncilAustralian Research Council; Australian National Fabrication Facility
Language English
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