Flexible pressure sensor based on graphene aerogel microstructures functionalized with CdS nanocrystalline thin film
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2018-10-26 10:36
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PLEŞCO, Irina; DRAGOMAN, Mircea L.; STROBEL, Julian; GHIMPU, Lidia; SCHUTT, Fabian; DINESCU, A.; URSAKI, Veacheslav; 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, nr. 117, pp. 418-422. ISSN 0749-6036.
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Superlattices and Microstructures
Numărul 117 / 2018 / ISSN 0749-6036

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


Pag. 418-422

Pleşco Irina1, Dragoman Mircea L.2, Strobel Julian3, Ghimpu Lidia4, Schutt Fabian3, Dinescu A.2, Ursaki Veacheslav4, 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