Proceedings Article10.1109/MEMS46641.2020.9056451
Highly Deformable Optoelectronics Using Liquid Metal
Takashi Kozaki,Saito Satoshi,Yota Otsuki,Ryosuke Matsuda,Yutaka Isoda,Takuma Endo,Fumika Nakamura,Takuto Araki,Taichi Furukawa,Shoji Maruo,Masayoshi Watanabe,Kazuhide Ueno,Hiroki Ota +12 more
- 01 Jan 2020
TL;DR: In this paper, a photo-switchable ionic liquid and a liquid-state heterojunction was used to realize liquid state optoelectronics based on liquid metal and photo-switched ionic liquids.
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Abstract: The study proposes optoelectronics based on liquid metal and photo-switchable ionic liquid with liquid-liquid heterojunction technology. As a proof of concept, a liquid-state light sensor and an optical memory which is switched on and off by UV and blue light exposures were demonstrated. The ionic liquid named 1-butyl-3-(4-phenylazobenzyl)imidazolium bis(trifluoromethanesulfonyl)amide ([Azo][NTf 2 ]) is used to realize functions as a light sensor or an optical memory. This ionic liquid is photoresponsive and can undergo a reversible isomerization controlled by light irradiation of UV or Blue; this property was used to realize the liquid-state optoelectronics in this study. In addition, a liquid-state heterojunction was taken advantage of in interconnects between sensing ionic liquid and liquid metal. The liquid-state heterojunction in the microchannels was critical to preventing intermixing of the two liquid components, especially, when the completed devices underwent mechanical deformation. These two important technologies, the photo-switchable ionic liquid and the heterojunction, achieved liquid-state optoelectronics based on liquid materials.
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References
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Highly deformable liquid-state heterojunction sensors
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From Macromolecular to Small-Molecular Triggers: Facile Method toward Photoinduced LCST Phase Behavior of Thermoresponsive Polymers in Mixed Ionic Liquids Containing an Azobenzene Moiety
Caihong Wang,Xiaofeng Ma,Yuzo Kitazawa,Yumi Kobayashi,Shiguo Zhang,Hisashi Kokubo,Masayoshi Watanabe +6 more
TL;DR: Interestingly, the length of the alkyl spacer between the ester and aryl groups, which is the only structural difference between the two polymers, leads to two different photoresponsive LCST phase transition behaviors.
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