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Electromagnetic shielding effectiveness of lightweight and flexible ultrathin shungite plates
Antonets Igor V.,Golubev Yevgeny A.,Shcheglov Vladimir I.,Sun Shiyong 한국물리학회 2021 Current Applied Physics Vol.29 No.-
Carbon-containing shielding materials, especially with absorbing properties, received a lot of attention from the scientific community as having flexibility, lightness and corrosion resistance. Reducing the thickness of such materials (usually a few millimeters) is also an urgent task. In this paper, we offered results of studying the reflective and absorbing properties of shielding materials from natural graphene-containing shungite. Flexible shungite plates with a thickness of 10–20 μm showed good reflection and absorption similar shielding performance to a thicker 2–3 mm synthetic polymer/carbon based composites. Such characteristics are associated with the fact that shungites are unique natural composites with a conductive carbon matrix and micro-sized dielectric mineral inclusions. Shungite could be considered as a raw to manufacture shielding materials, and as a model for more complete understanding of interaction of radiation with graphene-containing conducting solids in order to improve the shielding performances.