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Erschienen in:

2019 | OriginalPaper | Buchkapitel

17. Spiropyran-Functionalized Hydrogels

verfasst von : Kimio Sumaru, Toshiyuki Takagi, Shinji Sugiura, Toshiyuki Kanamori

Erschienen in: Soft Actuators

Verlag: Springer Singapore

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Abstract

Photoresponsive actuators composed of a hydrogel functionalized with spiropyran are described. The hydrogel exhibits drastic shrinking in rapid response to blue light irradiation in acidic aqueous systems and is examined for the application of several photoresponsive actuator systems. Rodlike hydrogel bends drastically after 1 s light irradiation, and microrelief is formed instantly on the hydrogel sheet by the micropatterned light irradiation. Based on these characteristics of the hydrogel, a photo-controllable microfluidic system is constructed with a hydrogel sheet, and the microchannels with arbitrary width, height, and pathway are formed instantly by the micropatterned light irradiation. Also independent and parallel control of microvalve array by local light irradiation is demonstrated for a similar microfluidic system combined with fixed microchannel.

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Vorheriges Kapitel Thermal and Electrical Actuation of Liquid Crystal Elastomers/Gels

Nächstes Kapitel Photomechanical Energy Conversion with Cross-Linked Liquid-Crystalline Polymers

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Titel: Spiropyran-Functionalized Hydrogels
verfasst von: Kimio Sumaru
Toshiyuki Takagi
Shinji Sugiura
Toshiyuki Kanamori
Verlag: Springer Singapore
Buch: Soft Actuators
Print ISBN: 978-981-13-6849-3

Electronic ISBN: 978-981-13-6850-9

Copyright-Jahr: 2019
DOI: https://doi.org/10.1007/978-981-13-6850-9_17

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