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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Flexoelectric characterization of dielectrics under tensile, compressive, and flexural loads by non-contact Kelvin probe measurements

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Autor(es):
Lorenzett, Ezequiel [1] ; Moreira, Kelly S. [1] ; Santos da Campo, Yan A. [2] ; Mehler, Dylan [1] ; Devens, Ana Luisa [1] ; Noras, Maciej A. [3] ; Burgo, Thiago A. L. [1, 2]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Univ Fed Santa Maria, Dept Chem, Av Roraima 1000, BR-97105900 Santa Maria, RS - Brazil
[2] Univ Fed Santa Maria, Dept Phys, Av Roraima 1000, BR-97105900 Santa Maria, RS - Brazil
[3] UNC Charlotte, Dept Engn Technol & Construct Management, 9201 Univ City Blvd, Charlotte, NC 28223 - USA
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Journal of Applied Physics; v. 129, n. 20 MAY 28 2021.
Citações Web of Science: 0
Resumo

Non-contact electrostatic measurements were used to the characterization of flexoelectric potentials in dielectrics under tensile, compressive, and flexural loads. Kelvin probes are capable to detect localized potential gradients on stretched natural latex that would hardly be detected at the macroscopic scale using standard methods for flexoelectric characterization. The high deformability of rubbers under tensile (or compressive) loads or dielectrics in fully folded states during flexural tests is a really challenging task for measurements using attached or compliant electrodes to detect flexoelectricity but is easily assessed with Kelvin probes. Moreover, non-contact electrostatic measurements are effective to avoid triboelectric effects, which are important sources of electricity on contacting surfaces. (AU)

Processo FAPESP: 14/50906-9 - INCT 2014: em Materiais Complexos Funcionais (INOMAT)
Beneficiário:Fernando Galembeck
Modalidade de apoio: Auxílio à Pesquisa - Temático