Browsing Luonnontieteiden, metsätieteiden ja tekniikan tiedekunta by Subject "absorption"

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    • Electrical, Transport, and Optical Properties of Multifunctional Graphitic Films Synthesized on Dielectric Surfaces by Nickel Nanolayer-Assisted Pyrolysis 

      Baah, Marian; Obraztsov, Petr; Paddubskaya, Alesia; Biciunas, Andrius; Suvanto, Sari; Svirko, Yuri; Kuzhir, Polina; Kaplas, Tommi (American Chemical Society (ACS), 2020)
      We demonstrate that predepositing a nanometrically thin nickel film on a dielectric surface is sufficient to transform an amorphous pyrolyzed photoresist film (PPF) into a graphitic film (GRF) enriched with nickel particles. ...
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    • Outstanding radiation tolerance of supported graphene: towards 2D sensors for the space millimeter radioastronomy 

      Paddubskaya, Alesia; Batrakov, Konstantin; Khrushchinsky, Arkadiy; Kuten, Semen; Plyushch, Artyom; Stepanov, Andrey; Remnev, Gennady; Shvetsov, Valery; Baah, Marian; Svirko, Yuri; Kuzhir, Polina (MDPI AG, 2021)
      We experimentally and theoretically investigated the effects of ionizing radiation on a stack of graphene sheets separated by polymethyl methacrylate (PMMA) slabs. The exceptional absorption ability of such a heterostructure ...
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    • Terahertz Absorber with Graphene Enhanced Polymer Hemispheres Array 

      Paddubskaya, Alesia; Valynets, Nadzeya; Maksimenko, Sergey; Kumar, Mukesh; Baah, Marian; Pekkarinen, Markku; Svirko, Yuri; Valušis, Gintaras; Kuzhir, Polina (MDPI AG, 2021)
      We propose an original technique for the fabrication of terahertz (THz) metasurfaces comprising a 3D printed regular array of polymer hemispheres covered with a thin conductive layer. We demonstrate that the deposition of ...
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