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https://hdl.handle.net/1822/78317
Título: | High frequency dielectric characterization of graphene doped flexible ceramics multilayers |
Autor(es): | França Junior, S. A. N. Souza, A. L. R. Cruz, L. B. Vaz, F. Ferreira, Armando José Barros Bohn, F. Acchar, W. Correa, M. A. |
Palavras-chave: | Tape casting Dielectric Dielectric loss High-frequency substrate |
Data: | 2022 |
Editora: | Elsevier 1 |
Revista: | Ceramics International |
Citação: | França Junior, S. A. N., Souza, A. L. R., Cruz, L. B., Vaz, F., Ferreira, A., Bohn, F., … Correa, M. A. (2022, July). High frequency dielectric characterization of graphene doped flexible ceramics multilayers. Ceramics International. Elsevier BV. http://doi.org/10.1016/j.ceramint.2022.03.306 |
Resumo(s): | 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. |
Tipo: | Artigo |
Descrição: | "Available online 1 April 2022" |
URI: | https://hdl.handle.net/1822/78317 |
DOI: | 10.1016/j.ceramint.2022.03.306 |
ISSN: | 0272-8842 |
Versão da editora: | https://www.sciencedirect.com/science/article/pii/S0272884222011166 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
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1-s2.0-S0272884222011166-main.pdf Acesso restrito! | 4,43 MB | Adobe PDF | Ver/Abrir |