High frequency dielectric characterization of graphene doped flexible ceramics multilayers
| Autor: | S.A.N. França Junior, A.L.R. Souza, L.B. Cruz, F. Vaz, A. Ferreira, F. Bohn, W. Acchar, M.A. Correa |
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| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
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| Popis: | "Available online 1 April 2022" This paper explores the tape casting technique to produce flexible heterostructured multilayers composed of graphene nanoplatelets doped Alumina and Ceria doped Nickel Oxide-Gadolinium. Given the excellent mechanical and electrical properties of graphene, multilayers were structured to explore the dielectric properties at a high-frequency regime. The stability of the suspensions, measured by rheological characterization, showed a pseudoplastic behavior. The structural properties of the flexible tapes were analyzed by X-ray diffraction and scanning electron microscopy. Electrical properties obtained through I − V curves showed an insulating behavior. The dielectric characterization was measured at a high-frequency regime (0.01 up to 1.5 GHz). The findings reflect the strong dependence of the dielectric behavior with the multilayer structure and graphene nanoplatelets doping concentration in the Alumina. The results open new perspectives of multifunctionalization flexible ceramics tapes for high-frequency applications. The authors acknowledge financial support from CNPq and Capes.M. A.C acknowledges the Capes through 88887.573100/20202-00 financial support. A.L.R.S acknowledges the CAPES through 8887.572905/20202-00 financial support. A.F. thanks FCT for the contract under the Stimulus of Scientific Employment (CTTI-31/18-CF (2) junior researcher contract) |
| Databáze: | OpenAIRE |
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