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Sensitivity Enhancement of Soft Capacitive Pressure Sensors Using a Solvent Evaporation-Based Porosity Control Technique
Published on: March 24, 2023
A new apparatus for measurement of capacitance change in soft materials
Takashi Kobayashi1, Haruhiko Nakajima
1Department of Applied Physics, Faculty of Engineering, Tokyo University of Agriculture and Technology, Koganei-shi, Tokyo 184-8588, Japan.
Abstract:
We have developed an apparatus with LC resonance circuit to measure a fast capacitance change accompanied by freezing of a supercooled water droplet that was placed in a capacitor space formed by a set of a needle and a copper plate. A trace of the capacitance change obtained exhibits a first rapid increase, a gradual growth, and a final steady state. The experimental capacitance change is in good agreement with that of the capacitance calculated with the finite element method.
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