4.7 Article

Sandwich-structured flexible PDMS@graphene multimodal sensors capable of strain and temperature monitoring with superlative temperature range and sensitivity

Journal

COMPOSITES SCIENCE AND TECHNOLOGY
Volume 232, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2022.109881

Keywords

Polydimethylsiloxane (PDMS); Graphene; Flexible sensor; Temperature; Strain

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This study presented a novel flexible and sandwich-structured polydimethylsiloxane (PDMS)@graphene sensor for diverse applications. The PDMS@graphene sensor exhibited resistivity dependence on temperature and strain changes, with a monitoring temperature range of -40 to 300 degrees C and a superlative thermal index of 12015.86 K. The sensor achieved a monitoring resolution of 0.5 degrees C for temperature and 0.0625% for strain, indicating its excellent repeatability. Thus, the innovative flexible PDMS@graphene sensor holds great potential in various fields such as structural components, biomedicine equipment, smart wearable textiles, and safety monitoring.
For the purpose of extending the flexible sensor applied for diverse applications, this study proposed a novel flexible and sandwich-structured polydimethylsiloxane (PDMS)@graphene sensor by the one-step solvent evaporation method. The prepared PDMS@graphene sensor exhibits resistivity dependence on both temperature and strain changes. For instance, the PDMS@graphene flexible sensor carried out a monitoring temperature range of-40 to 300 degrees C with the superlative thermal index and strain sensitivity of 12015.86 K and 2175.8, respectively. The monitoring resolution of the PDMS@graphene sensor achieved 0.5 degrees C and 0.0625% for the temperature and strain with excellent repeatability. Accordingly, the innovative flexible PDMS@graphene sensor presents broad application prospects for structural components, biomedicine equipment, smart wearable textiles, and safety monitoring.

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