Flexible pressure sensor based on graphene aerogel microstructures functionalized with CdS nanocrystalline thin film

Pleşco (Jin) Irina; Dragoman Mircea L.; Strobel Julian; Ghimpu Lidia; Schutt Fabian; Dinescu Adrian; Ursachi Veaceslav; Kienle Lorenz; Adelung Rainer; Tiginyanu Ion

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2018-10-26 10:36

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PLEŞCO (JIN), Irina, DRAGOMAN, Mircea L., STROBEL, Julian, GHIMPU, Lidia, SCHUTT, Fabian, DINESCU, Adrian, URSACHI, Veaceslav, KIENLE, Lorenz, ADELUNG, Rainer, TIGINYANU, Ion. Flexible pressure sensor based on graphene aerogel microstructures functionalized with CdS nanocrystalline thin film. In: Superlattices and Microstructures, 2018, vol. 117, pp. 418-422. ISSN 0749-6036.

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Superlattices and Microstructures

Volumul 117 / 2018 / ISSN 0749-6036

Flexible pressure sensor based on graphene aerogel microstructures functionalized with CdS nanocrystalline thin film

Pag. 418-422

Pleşco (Jin) Irina¹, Dragoman Mircea L.², Strobel Julian³, Ghimpu Lidia⁴, Schutt Fabian³, Dinescu Adrian², Ursachi Veaceslav⁴, Kienle Lorenz³, Adelung Rainer³, Tiginyanu Ion¹

¹ Technical University of Moldova,
² National Institute for Research and Development in Microtechnologies ,
³ Institute for Material Science, Christian-Albrechts-University of Kiel,
⁴ Institute of the Electronic Engineering and Nanotechnologies "D. Ghitu" of the Academy of Sciences of Moldova

Disponibil în IBN: 19 iunie 2018

Rezumat

In this paper, we report on functionalization of graphene aerogel with a CdS thin film deposited by magnetron sputtering and on the development of flexible pressure sensors based on ultra-lightweight CdS-aerogel nanocomposite. Analysis by scanning electron microscopy, transmission electron microscopy and energy dispersive X-ray analysis disclose the uniform deposition of nanocrystalline CdS films with quasi-stoichiometric composition. The piezoresistive response of the aforementioned nanocomposite in the pressure range from 1 to 5 atm is found to be more than one order of magnitude higher than that inherent to suspended graphene membranes, leading to an average sensitivity as high as 3.2 × 10⁻⁴ kPa⁻¹.

Cuvinte-cheie
CdS, magnetron sputtering, Graphene aerogels, Nanocrystalline thin films, pressure sensors

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<title xml:lang='en'>Flexible pressure sensor based on graphene aerogel microstructures functionalized with CdS nanocrystalline thin film</title>
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<subject>CdS</subject>
<subject>magnetron sputtering</subject>
<subject>Graphene aerogels</subject>
<subject>Nanocrystalline thin films</subject>
<subject>pressure sensors</subject>
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