Side-chain Modification of Copolymer Gelators for Gel-based Pressure Sensors
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초록
내용
Herein, we propose non-volatile pressure sensors based on ion gels consisting of carefully designed random copolymer gelators and room-temperature ionic liquids. We synthesized high/low Tg random copolymers to investigate the effect of copolymer flexibility on the gel performance. For accurate comparison, we fixed key parameters such as molecular weight and styrene fraction in the copolymer, and gel composition. The resulting device exhibited good sensitivity (~1.0 kPa-1) and a linear response over a wide range (~50 kPa) of detectable pressure.