A Flexible Topo-optical Sensing Technology with Ultra-high Contrast

Wang, Cong, Wang, Ding, Kozhevnikov, Valery, Dai, Xingyi, Turnbull, Graeme, Chen, Xue, Kong, Jie, Tang, Ben Zhong, Li, Yifan and Xu, Bin (2020) A Flexible Topo-optical Sensing Technology with Ultra-high Contrast. Nature Communications, 11. p. 1448. ISSN 2041-1723

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Official URL: https://doi.org/10.1038/s41467-020-15288-8

Abstract

Elastic folding, a phenomenon widely existing in nature, has attracted great interests to understand the math and physical science behind the topological transition on surface, thus can be used to create frontier engineering solutions. Here, we propose a topo-optical sensing strategy with ultra-high contrast by programming surface folds on targeted area with a thin optical indicator layer. A robust and precise signal generation can be achieved under mechanical compressive strains (> 0.4). This approach bridges the gap in current mechano-responsive luminescence mechanism, by utilizing the unwanted oxygen quenching effect of Iridium-III (Ir-III) fluorophores to enable an ultra-high contrast signal. Moreover, this technology hosts a rich set of attractive features such as high strain sensing, encoded logic function, direct visualisation and good adaptivity to the local curvature, from which we hope it will enable new opportunities for designing next generation flexible/wearable devices.

Item Type: Article
Subjects: F100 Chemistry
F200 Materials Science
F300 Physics
H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Faculties > Health and Life Sciences > Applied Sciences
Depositing User: Elena Carlaw
Date Deposited: 26 Feb 2020 14:56
Last Modified: 30 Mar 2020 12:30
URI: http://nrl.northumbria.ac.uk/id/eprint/42245

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