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    Leveraging a temperature-tunable, scale-like microstructure to produce multimodal, supersensitive sensors

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    C7NR01662J-2.pdf
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    Description:
    Accepted Manuscript
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    Type
    Article
    Authors
    Tai, Yanlong cc
    Bera, Tushar Kanti
    Yang, Zhenguo
    Lubineau, Gilles cc
    KAUST Department
    Composite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2017
    Permanent link to this record
    http://hdl.handle.net/10754/624969
    
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    Abstract
    The microstructure of a flexible film plays an important role in its sensing capability. Here, we fabricate a temperature-dependent wrinkled single-walled carbon nanotube (SWCNT)/polydimethyl-siloxane (PDMS) film (WSPF) and a wrinkle-dependent scale-like SWCNT/PDMS film (SSPF) successfully, and address the formation and evolution mechanisms of each film. The low elastic modulus and high coefficient of thermal expansion of the PDMS layer combined with the excellent piezoresistive behavior of the SWCNT film motivated us to investigate how the scale-like microstructure of the SSPF could be used to design multimodal-sensing devices with outstanding capabilities. The results show that SSPFs present supersensitive performance in mechanical loading (an effective sensitivity of up to 740.7 kPa-1) and in temperature (a tunable thermal index of up to 29.9 × 103 K). These exceptional properties were demonstrated in practical applications in a programmable flexile pressure sensor, thermal/light monitor or switch, etc., and were further explained through the macroscopic and microscopic piezoresistive behaviors of scale-like SWCNT coatings.
    Citation
    Tai Y, Kanti Bera T, Yang Z, Lubineau G (2017) Leveraging a temperature-tunable, scale-like microstructure to produce multimodal, supersensitive sensors. Nanoscale. Available: http://dx.doi.org/10.1039/c7nr01662j.
    Sponsors
    We express gratitude to the Baseline Funding from the King Abdullah University of Science and Technology (KAUST) for financial support. This work was also partially supported by the key discipline fund of Shanghai (B117).
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Nanoscale
    DOI
    10.1039/c7nr01662j
    PubMed ID
    28561828
    Additional Links
    http://pubs.rsc.org/en/Content/ArticleLanding/2017/NR/C7NR01662J#!divAbstract
    ae974a485f413a2113503eed53cd6c53
    10.1039/c7nr01662j
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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