Fabrication of Ag/PDMS-TiO2 flexible piezoresistive pressure sensor

Kumari, K. and Reeshma, R. and ArunKumar, D. S. and Meti, Sunil and Rahman, M. R. (2020) Fabrication of Ag/PDMS-TiO2 flexible piezoresistive pressure sensor. Physica B: Condensed Matter, 597. ISSN 1873-2135

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Abstract

In this study, TiO2 nanorods are grown on a flexible Polydimethylsiloxane (PDMS) substrate using the hydrothermal technique. The morphological, structural, compositional, optical properties and pressure sensing are investigated in detail by FESEM, XRD, EDX, UV-visible spectrophotometer, and piezoelectric studies. XRD demonstrates the pure rutile phase with a tetragonal structure is formed from deposited TiO2 thin film. FESEM images confirm the TiO2 nanorods with average dimensions length similar to 620 nm and diameter similar to 97 nm whereas the optical spectrum shows the strong light absorption in the UV region with bandgap 3.54 eV. The voltage is measured as a response to the applied mechanical load and the sensitivity of the pressure sensor is obtained as 2.56 x 10(-5) V/N. The flexible pressure sensors (Ag/PDMS-TiO2) senses over a large pressure range and shows a linear response because of the adjustments in the volume of dielectric that makes the pressure inside the dielectric cavity to vary.

Item Type:	Article
Uncontrolled Keywords:	Hydrothermal synthesis; Ag/PDMS composite; Polycarbonate sheet; Nanostructures; Flexible pressure sensor; Optical properties
Subjects:	D Physical Science > Material Science
Divisions:	Department of > Material Science
Depositing User:	Mr Umendra uom
Date Deposited:	29 Mar 2021 06:30
Last Modified:	29 Mar 2021 06:30
URI:	http://eprints.uni-mysore.ac.in/id/eprint/15476

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