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Electrically Insulating Flexible Films with Quasi-1D van der Waals Fillers as Efficient Electromagnetic Shields in the GHz and Sub-THz Frequency Bands.
Barani, Zahra; Kargar, Fariborz; Ghafouri, Yassamin; Ghosh, Subhajit; Godziszewski, Konrad; Baraghani, Saba; Yashchyshyn, Yevhen; Cywinski, Grzegorz; Rumyantsev, Sergey; Salguero, Tina T; Balandin, Alexander A.
  • Barani Z; Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, Riverside, CA, 92521, USA.
  • Kargar F; Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, Riverside, CA, 92521, USA.
  • Ghafouri Y; Department of Chemistry, University of Georgia, Athens, GA, 30602, USA.
  • Ghosh S; Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, Riverside, CA, 92521, USA.
  • Godziszewski K; Institute of Radioelectronics and Multimedia Technology, Warsaw University of Technology, Warsaw, 00-665, Poland.
  • Baraghani S; Nano-Device Laboratory (NDL) and Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering, University of California, Riverside, Riverside, CA, 92521, USA.
  • Yashchyshyn Y; Materials Science and Engineering Program, University of California, Riverside, Riverside, CA, 92521, USA.
  • Cywinski G; Institute of Radioelectronics and Multimedia Technology, Warsaw University of Technology, Warsaw, 00-665, Poland.
  • Rumyantsev S; CENTERA Laboratories, Institute of High-Pressure Physics, Polish Academy of Sciences, Warsaw, 01-142, Poland.
  • Salguero TT; CENTERA Laboratories, Institute of High-Pressure Physics, Polish Academy of Sciences, Warsaw, 01-142, Poland.
  • Balandin AA; CEZAMAT, Warsaw University of Technology, Warsaw, 02-822, Poland.
Adv Mater ; 33(11): e2007286, 2021 Mar.
Article en En | MEDLINE | ID: mdl-33576041
ABSTRACT
Polymer composite films containing fillers comprising quasi-1D van der Waals materials, specifically transition metal trichalcogenides with 1D structural motifs that enable their exfoliation into bundles of atomic threads, are reported. These nanostructures are characterized by extremely large aspect ratios of up to ≈106 . The polymer composites with low loadings of quasi-1D TaSe3 fillers (<3 vol%) reveal excellent electromagnetic interference shielding in the X-band GHz and extremely high frequency sub-THz frequency ranges, while remaining DC electrically insulating. The unique electromagnetic shielding characteristics of these films are attributed to effective coupling of the electromagnetic waves to the high-aspect-ratio electrically conductive TaSe3 atomic-thread bundles even when the filler concentration is below the electrical percolation threshold. These novel films are promising for high-frequency communication technologies, which require electromagnetic shielding films that are flexible, lightweight, corrosion resistant, inexpensive, and electrically insulating.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2021 Tipo del documento: Article
Texto completo
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XML
PubMed Links
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2021 Tipo del documento: Article