Millimeter-Scale Percolated Polyethylene/Graphene Composites for 5G Electromagnetic Shielding
Source abstract
Abstract
A concern regarding electromagnetic interference (EMI) shielding materials with high absorption capacity was raised as fifth-generation (5G) telecommunication developed. However, current shielding materials are generally focusing on reflection. To address this breakthrough in EMI shielding materials, a high-density polyethylene (HDPE)/few-layer graphene composite millimeter (mm)-scaled percolation structure was investigated for K-band electromagnetic shielding applications. The HDPE/multilayer graphene (MLG) composite with an mm-scale percolation structure exhibits excellent electrical and thermal conductive properties and shows an absorption-dominant electromagnetic shielding effect. In particular, the best optimized EMI shielding effectiveness of the composite at 26 GHz was 71.25 dB and showed an excellent absorption-dominant shielding mechanism with an absorption coefficient of 0.78. The mm-scaled percolation structure revealed that it effectively works in the K-band rather than the X-band by optimizing multiple reflection phases by the mm-scale HDPE particle.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Electromagnetic Compatibility and Measurements
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of Korea
Composites Research Division, Korea Institute of Materials Science, Changwon 51508, Republic of Korea
Major of Human Biocovergence, Division of Smart Healthcare, College of Information Technology and Convergence, Pukyong National University, Busan 48513, Republic of Korea
Funding
Ministry of Science, ICT and Future Planning
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