Millimeter-Scale Percolated Polyethylene/Graphene Composites for5G Electromagnetic Shielding br
- Authors
- Ryu, Seung Han; Kim, Han; Park, Si-woo; Kwon, Suk Jin; Kim, Suryeon; Lim, Hyo-Ryoung; Park, Byeongjin; Lee, Sang-bok; Choa, Yong-Ho
- Issue Date
- Jun-2022
- Publisher
- American Chemical Society
- Keywords
- electromagnetic interference (EMI) shielding material; X-band frequency; K-band frequency; three-dimensional structure; multilayer graphene; absorption-dominant
- Citation
- ACS Applied Nano Materials, v.5, no.6, pp 8429 - 8439
- Pages
- 11
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS Applied Nano Materials
- Volume
- 5
- Number
- 6
- Start Page
- 8429
- End Page
- 8439
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/111087
- DOI
- 10.1021/acsanm.2c01544
- ISSN
- 2574-0970
2574-0970
- Abstract
- A concern regarding electromagnetic interference(EMI) shielding materials with high absorption capacity was raisedasfifth-generation (5G) telecommunication developed. However,current shielding materials are generally focusing on reflection. Toaddress this breakthrough in EMI shielding materials, a high-density polyethylene (HDPE)/few-layer graphene compositemillimeter (mm)-scaled percolation structure was investigated forK-band electromagnetic shielding applications. The HDPE/multi-layer graphene (MLG) composite with an mm-scale percolationstructure exhibits excellent electrical and thermal conductiveproperties and shows an absorption-dominant electromagneticshielding effect. In particular, the best optimized EMI shielding effectiveness of the composite at 26 GHz was 71.25 dB and showedan excellent absorption-dominant shielding mechanism with an absorption coefficient of 0.78. The mm-scaled percolation structurerevealed that it effectively works in the K-band rather than the X-band by optimizing multiple reflection phases by the mm-scale HDPE particle
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