Multilayer Graphene-based films for strain sensing

Author

Rinaldi, A. ; Proietti, A. ; Tamburrano, Alessio ; De Bellis, G. ; Mulattieri, M. ; Sarto, M.S.

Author_Institution

Res. Center for Nanotechnol. Appl. to Eng., Sapienza Univ., Rome, Italy

fYear

2014

fDate

18-21 Aug. 2014

Firstpage

585

Lastpage

589

Abstract

In this work we investigate the piezoresistive effect in multilayer graphene (MLG) based films produced by two different cost-effective techniques, spray coating and drop casting. Both techniques enable the direct deposition of the sensor over the structure to be monitored. The piezoresistive behavior of the MLG-based sensors has been investigated experimentally by measuring the variation of the electrical resistance during three point bending tests. The sensor response has been stabilized through an optimized mechanical treatment. The obtained results show that the produced sensors are characterized by a gauge factor in the range 20-50 at very small strains (i.e. below 0.2%).

Keywords

casting; electric resistance measurement; graphene; piezoresistive devices; spray coating techniques; strain gauges; strain measurement; strain sensors; thin film sensors; C; MLG-based sensor; deposition; drop casting; electrical resistance measurement; gauge factor; multilayer graphene-based film; optimized mechanical treatment; piezoresistive effect; spray coating; strain sensing; three point bending testing; Casting; Films; Graphene; Piezoresistance; Strain; Suspensions; Graphene; drop casting; spray deposition; strain sensor;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology (IEEE-NANO), 2014 IEEE 14th International Conference on

Conference_Location

Toronto, ON

Type

conf

DOI

10.1109/NANO.2014.6967987

Filename

6967987