Highly sensitive, scalable reduced graphene oxide with palladium nano-composite as strain sensor.

Author(s) Nuthalapati, S.; Shirhatti, V.; Kedambaimoole, V.; Neella, N.; Nayak, M.M.; Rajanna, K.; Takao, H.
Journal Nanotechnology
Date Published 2020 Jan 17

We report a novel strain sensor based on reduced graphene oxide (rGO) with palladium (Pd) nano-composite. The sensor was fabricated on the SS304 stainless-steel substrate using a screen-printing method. Graphene oxide was synthesized using a modified Hummer's method and reduced using a chemical route. Field emission-scanning electron microscope, x-ray diffraction and Raman spectroscopy were used to characterize the as-synthesized nano-composite. The as-fabricated strain sensor was tested for tensile strain using Micro-universal Test Machine and the change in resistance for different strains was recorded. The sensor response was observed to be stable and linear within the applied strain range of 0-3000 microstrains, and an average gauge factor of 42.69 was obtained in this range.

DOI 10.1088/1361-6528/ab4855
ISSN 1361-6528
Citation Nanotechnology. 2020;31(3):035501.

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