ハイドロゲル膨潤検知のための単層カーボンナノチューブ歪みセンサ

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  • Single walled carbon nanotube strain sensor for detecting swell-shrink behavior of hydrogel

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In this study, we propose a method to detect the shrink/swell behavior of stimuli-responsive hydrogel by a strain sensor using single-walled carbon nanotubes (SWCNT). We fabricated a sensor that detects the deformation of a thin poly-dimethylsiloxane(PDMS) sheet by resistance change of deposited SWCNT. When a stimuli-responsive hydrogel is placed on the sheet of PDMS, the swelling and shrinking responses of the hydrogel can be directly converted to mechanical deformation of the PDMS sheet, resulting in the electrical resistance change of the SWCNT strain sensor. We believe that this approach would be useful as a biochemical sensor for continuous monitoring of biological information.

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