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ABSTRACT
Previous studies on UV-curable elastomer for digital light processing (DLP) 3D printing flexible electronics mostly focused on higher stretchability and healability, thereby ignoring rapid recoverability after a stretch which is very important for the real-time transmission of electrical signals in flexible electronics. Herein, a UV-curable elastomer is developed with a novel dynamic hierarchical crosslinking network that can be stretched up to over 800% and rapid recoverability at 300% strain. We proposed a hydrogel-elastomer assembling process to simplify the manufacturing process for stretchable conductors. The stretchable conductors served as a strain sensor exhibiting excellent stability and repeatability after 10 cycles at 20–50% strain with low signal drift and hysteresis, Moreover, the strain sensor can be utilised in recognising the different bending angles of the finger, making DLP printing of conductive elastomer a viable strategy for the rapid manufacturing of flexible electronics.
Acknowledgements
The authors gratefully acknowledge Prof. Chuanfei Guo from Southern University of Science and Technology for the support of experimental tests.
Disclosure statement
No potential conflict of interest was reported by the author(s).
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Notes on contributors
Jun Zhou
Jun Zhou is currently a master student of Guangxi University.
Honghao Yan
Honghao Yan is currently a master student of Guangxi University.
Chengyun Wang
Chengyun Wang is currently a master student of Guangxi University.
Huaqiang Gong
Huaqiang Gong is currently a master student of Guangxi University.
Qiuxiao Nie
Qiuxiao Nie is currently a master student of Guangxi University.
Dr Yu Long is a professor of Guangxi University.