2DM-104128.R2_Proof_hi (1).pdf (2.2 MB)
PtSe2 grown directly on polymer foil for use as a robust piezoresistive sensor
journal contribution
posted on 2023-06-09, 18:32 authored by Conor Boland, Cormac Ó Coileáin, Stefan Wagner, John B McManus, Conor P Cullen, M C Lemme, Georg S Duesberg, Niall McEvoyRobust strain gauges are fabricated by growing PtSe2 layers directly on top of flexible polyimide foils. These PtSe2 layers are grown by low-temperature, thermally-assisted conversion of predeposited Pt layers. Under applied flexure the PtSe2 layers show a decrease in electrical resistance signifying a negative gauge factor. The influence of the growth temperature and film thickness on the electromechanical properties of the PtSe2 layers is investigated. The best-performing strain gauges fabricated have a superior gauge factor to that of commercial metal-based strain gauges. Notably, the strain gauges offer good cyclability and are very robust, surviving repeated peel tests and immersion in water. Furthermore, preliminary results indicate that the stain gauges also show potential for high-frequency operation. This host of advantageous properties, combined with the possibility of further optimization and channel patterning, indicate that PtSe2 grown directly on polyimide holds great promise for future applications.
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Publication status
- Published
File Version
- Accepted version
Journal
2D MaterialsISSN
2053-1583Publisher
IOP PublishingExternal DOI
Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2019-08-01First Open Access (FOA) Date
2020-07-19First Compliant Deposit (FCD) Date
2019-07-30Usage metrics
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