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Influence of the Humidity on Nanoparticle-Based Resistive Strain Gauges

Abstract : The strong impact of humidity over the performances of gold colloidal nanoparticle (NP)-based resistive strain gauges is quantified and investigated by coupling electro-mechanical and in situ small-angle X-ray scattering measurements. When the relative humidity increases from 0% to 60%, the electrical resistance at rest of the NP-based sensors increases by 40%, and their sensitivity increases by 50%. This is accompanied by a rise of about 1% to 2% in the center-to-center distance between neighboring NPs and by an increase of the compactness of the NP assembly, possible evidence of a reorganization of the NPs. An encapsulation solution, based on alternating polymer and alumina layers, stabilizes the performances of the NP-based strain gauges for strains up to 0.4%. This approach could be extended to other flexible NP-based devices.
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https://hal.insa-toulouse.fr/hal-02018013
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Submitted on : Wednesday, February 13, 2019 - 3:14:44 PM
Last modification on : Friday, April 9, 2021 - 10:50:02 AM

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Lucas Digianantonio, Melanie Gauvin, Thomas Alnasser, David Babonneau, Benoit Viallet, et al.. Influence of the Humidity on Nanoparticle-Based Resistive Strain Gauges. Journal of Physical Chemistry C, American Chemical Society, 2016, 120 (10), pp.5848-5854. ⟨10.1021/acs.jpcc.6b00822⟩. ⟨hal-02018013⟩

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