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Highly Sensitive Ultrathin Flexible Thermoplastic Polyurethane/Carbon Black Fibrous Film Strain Sensor with Adjustable Scaffold Networks

Nano-micro letters, 2021-01, Vol.13 (1), p.64-64, Article 64 [Peer Reviewed Journal]

The Author(s) 2021 ;The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2311-6706 ;EISSN: 2150-5551 ;DOI: 10.1007/s40820-021-00592-9 ;PMID: 34138311

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  • Title:
    Highly Sensitive Ultrathin Flexible Thermoplastic Polyurethane/Carbon Black Fibrous Film Strain Sensor with Adjustable Scaffold Networks
  • Author: Wang, Xin ; Liu, Xianhu ; Schubert, Dirk W.
  • Subjects: Carbon black ; Conducting polymers ; Durability ; Electronic skin ; Electrospinning ; Engineering ; Fitting model ; Human motion ; Mathematical models ; Nanoscale Science and Technology ; Nanotechnology ; Nanotechnology and Microengineering ; Polymer matrix composites ; Polyurethane resins ; Response time ; Scaffolds ; Sensitivity ; Sensors ; Stability ; Strain gauges ; Strain sensor ; Stretching ; Urethane thermoplastic elastomers ; Wearable technology
  • Is Part Of: Nano-micro letters, 2021-01, Vol.13 (1), p.64-64, Article 64
  • Description: Highlights The sensors displayed high sensitivity (8962.7), fast response time (60 ms), outstanding stability and durability (> 10,000 cycles) and widely workable stretching range (0–160%). A theoretical approach was used to analyze mechanical property, and a model based on tunneling theory was modified to describe the relative change of resistance. Two equations were proposed and offered an effective but simple approach to analyze the change of number of conductive paths and distance of adjacent conductive particles. In recently years, high-performance wearable strain sensors have attracted great attention in academic and industrial. Herein, a conductive polymer composite of electrospun thermoplastic polyurethane (TPU) fibrous film matrix-embedded carbon black (CB) particles with adjustable scaffold network was fabricated for high-sensitive strain sensor. This work indicated the influence of stereoscopic scaffold network structure built under various rotating speeds of collection device in electrospinning process on the electrical response of TPU/CB strain sensor. This structure makes the sensor exhibit combined characters of high sensitivity under stretching strain (gauge factor of 8962.7 at 155% strain), fast response time (60 ms), outstanding stability and durability (> 10,000 cycles) and a widely workable stretching range (0–160%). This high-performance, wearable, flexible strain sensor has a broad vision of application such as intelligent terminals, electrical skins, voice measurement and human motion monitoring. Moreover, a theoretical approach was used to analyze mechanical property and a model based on tunneling theory was modified to describe the relative change of resistance upon the applied strain. Meanwhile, two equations based from this model were first proposed and offered an effective but simple approach to analyze the change of number of conductive paths and distance of adjacent conductive particles.
  • Publisher: Singapore: Springer Nature Singapore
  • Language: English
  • Identifier: ISSN: 2311-6706
    EISSN: 2150-5551
    DOI: 10.1007/s40820-021-00592-9
    PMID: 34138311
  • Source: Open Access: PubMed Central
    Geneva Foundation Free Medical Journals at publisher websites
    AUTh Library subscriptions: ProQuest Central
    Springer OA刊
    ROAD: Directory of Open Access Scholarly Resources
    DOAJ Directory of Open Access Journals
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