Simultaneous and accurate measurement of the dielectric constant at many frequencies spanning a wide range

Roberto Pérez-Aparicio; Caroline Crauste-Thibierge; Denis Cottinet; Marius Tanase; Pascal Metz; Ludovic Bellon; Antoine Naert; Sergio Ciliberto

doi:10.1063/1.4916260

Simultaneous and accurate measurement of the dielectric constant at many frequencies spanning a wide range

Roberto Pérez-Aparicio, Caroline Crauste-Thibierge, Denis Cottinet, Marius Tanase, Pascal Metz, Ludovic Bellon, Antoine Naert, Sergio Ciliberto

Ecole Normale Supérieure de Lyon

Research output: Contribution to journal › Article › peer-review

Abstract

We present an innovative technique which allows the simultaneous measurement of the dielectric constant of a material at many frequencies, spanning a four orders of magnitude range chosen between 10^-2 Hz and 10⁴ Hz. The sensitivity and accuracy are comparable to those obtained using standard single frequency techniques. The technique is based on three new and simple features: (a) the precise real time correction of the amplification of a current amplifier, (b) the specific shape of the excitation signal and its frequency spectrum, and (c) the precise synchronization between the generation of the excitation signal and the acquisition of the dielectric response signal. This technique is useful in the case of relatively fast dynamical measurements when the knowledge of the time evolution of the dielectric constant is needed.

Original language	English
Article number	044702
Journal	Review of Scientific Instruments
Volume	86
Issue number	4
DOIs	https://doi.org/10.1063/1.4916260
Publication status	Published - 1 Apr 2015
Externally published	Yes

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title = "Simultaneous and accurate measurement of the dielectric constant at many frequencies spanning a wide range",

abstract = "We present an innovative technique which allows the simultaneous measurement of the dielectric constant of a material at many frequencies, spanning a four orders of magnitude range chosen between 10-2 Hz and 104 Hz. The sensitivity and accuracy are comparable to those obtained using standard single frequency techniques. The technique is based on three new and simple features: (a) the precise real time correction of the amplification of a current amplifier, (b) the specific shape of the excitation signal and its frequency spectrum, and (c) the precise synchronization between the generation of the excitation signal and the acquisition of the dielectric response signal. This technique is useful in the case of relatively fast dynamical measurements when the knowledge of the time evolution of the dielectric constant is needed.",

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AU - Pérez-Aparicio, Roberto

AU - Crauste-Thibierge, Caroline

AU - Cottinet, Denis

AU - Tanase, Marius

AU - Metz, Pascal

AU - Bellon, Ludovic

AU - Naert, Antoine

AU - Ciliberto, Sergio

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AB - We present an innovative technique which allows the simultaneous measurement of the dielectric constant of a material at many frequencies, spanning a four orders of magnitude range chosen between 10-2 Hz and 104 Hz. The sensitivity and accuracy are comparable to those obtained using standard single frequency techniques. The technique is based on three new and simple features: (a) the precise real time correction of the amplification of a current amplifier, (b) the specific shape of the excitation signal and its frequency spectrum, and (c) the precise synchronization between the generation of the excitation signal and the acquisition of the dielectric response signal. This technique is useful in the case of relatively fast dynamical measurements when the knowledge of the time evolution of the dielectric constant is needed.

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Simultaneous and accurate measurement of the dielectric constant at many frequencies spanning a wide range

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