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.
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28 May 2021
Research Article|
May 24 2021
Flexoelectric characterization of dielectrics under tensile, compressive, and flexural loads by non-contact Kelvin probe measurements
Special Collection:
Trends in Flexoelectricity
Ezequiel Lorenzett
;
Ezequiel Lorenzett
1
Department of Chemistry, Federal University of Santa Maria
, Av. Roraima 1000, Santa Maria/RS, CEP 97105-900, Brazil
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Kelly S. Moreira
;
Kelly S. Moreira
1
Department of Chemistry, Federal University of Santa Maria
, Av. Roraima 1000, Santa Maria/RS, CEP 97105-900, Brazil
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Yan A. Santos da Campo
;
Yan A. Santos da Campo
2
Department of Physics, Federal University of Santa Maria
, Av. Roraima 1000, Santa Maria/RS, CEP 97105-900, Brazil
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Dylan Mehler
;
Dylan Mehler
1
Department of Chemistry, Federal University of Santa Maria
, Av. Roraima 1000, Santa Maria/RS, CEP 97105-900, Brazil
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Ana Luisa Devens
;
Ana Luisa Devens
1
Department of Chemistry, Federal University of Santa Maria
, Av. Roraima 1000, Santa Maria/RS, CEP 97105-900, Brazil
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Maciej A. Noras;
Maciej A. Noras
3
Department of Engineering Technology and Construction Management, UNC Charlotte
, 9201 University City Blvd., Charlotte, North Carolina 28223-0001, USA
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Thiago A. L. Burgo
Thiago A. L. Burgo
a)
1
Department of Chemistry, Federal University of Santa Maria
, Av. Roraima 1000, Santa Maria/RS, CEP 97105-900, Brazil
2
Department of Physics, Federal University of Santa Maria
, Av. Roraima 1000, Santa Maria/RS, CEP 97105-900, Brazil
a)Author to whom correspondence should be addressed: thiago.burgo@ufsm.br
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a)Author to whom correspondence should be addressed: thiago.burgo@ufsm.br
Note: This paper is part of the Special Topic on Trends in Flexoelectricity.
J. Appl. Phys. 129, 204502 (2021)
Article history
Received:
February 28 2021
Accepted:
May 11 2021
Citation
Ezequiel Lorenzett, Kelly S. Moreira, Yan A. Santos da Campo, Dylan Mehler, Ana Luisa Devens, Maciej A. Noras, Thiago A. L. Burgo; Flexoelectric characterization of dielectrics under tensile, compressive, and flexural loads by non-contact Kelvin probe measurements. J. Appl. Phys. 28 May 2021; 129 (20): 204502. https://doi.org/10.1063/5.0049008
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