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Hierarchically patterned self-powered sensors for multifunctional tactile sensing

Science advances, 2020-08, Vol.6 (34), p.eabb9083-eabb9083 [Peer Reviewed Journal]

Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). ;Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). 2020 The Authors ;ISSN: 2375-2548 ;EISSN: 2375-2548 ;DOI: 10.1126/sciadv.abb9083 ;PMID: 32875115

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  • Title:
    Hierarchically patterned self-powered sensors for multifunctional tactile sensing
  • Author: Wang, Yang ; Wu, Heting ; Xu, Lin ; Zhang, Hainan ; Yang, Ya ; Wang, Zhong Lin
  • Subjects: Materials Science ; SciAdv r-articles
  • Is Part Of: Science advances, 2020-08, Vol.6 (34), p.eabb9083-eabb9083
  • Description: Flexible sensors are highly desirable for tactile sensing and wearable devices. Previous researches of smart elements have focused on flexible pressure or temperature sensors. However, realizing material identification remains a challenge. Here, we report a multifunctional sensor composed of hydrophobic films and graphene/polydimethylsiloxane sponges. By engineering and optimizing sponges, the fabricated sensor exhibits a high-pressure sensitivity of >15.22 per kilopascal, a fast response time of <74 millisecond, and a high stability over >3000 cycles. In the case of temperature stimulus, the sensor exhibits a temperature-sensing resolution of 1 kelvin via the thermoelectric effect. The sensor can generate output voltage signals after physical contact with different flat materials based on contact-induced electrification. The corresponding signals can be, in turn, used to infer material properties. This multifunctional sensor is excellent in its low cost and material identification, which provides a design concept for meeting the challenges in functional electronics.
  • Publisher: United States: American Association for the Advancement of Science
  • Language: English
  • Identifier: ISSN: 2375-2548
    EISSN: 2375-2548
    DOI: 10.1126/sciadv.abb9083
    PMID: 32875115
  • Source: DOAJ Directory of Open Access Journals
    PubMed Central（OA）
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