Influence of the Humidity on Nanoparticle-Based Resistive Strain Gauges

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• 作者：Lucas Digianantonio ; Mélanie Gauvin ; Thomas Alnasser ; David Babonneau ; Benoit Viallet ; Jérémie Grisolia ; Guillaume Viau ; Alessandro Coati ; Yves Garreau ; Laurence Ressier
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：March 17, 2016
• 年：2016
• 卷：120
• 期：10
• 页码：5848-5854
• 全文大小：372K
• ISSN：1932-7455

文摘

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.