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Light-driven autonomous swing of multi-layered hydrogel.

ABSTRACT: Light-driven self-oscillators without electronic circuits or conventional heat engines are carbon-emission-free systems and hold promise for developing autonomous transmission pumps and self-swimming micromotors. Thermosensitive hydrogels as self-oscillators can be used in the exploitation of low-temperature heat sources and in medical applications since the driving temperature is close to body temperature. Here, the autonomous swinging of the hydrogel was achieved by irradiating a constant light beam onto a head laminated with two thermosensitive hydrogels with different transition temperatures. Hysteresis resulting from the transition point difference between the two hydrogels allowed the light-driven self-oscillation without self-shadowing from the irradiation. The proposed theoretical model and numerical simulations explain this light-driven continuous swing, and the results agree qualitatively well with the experiments.

SUBMITTER: Nakamura S

PROVIDER: S-EPMC9682406 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature

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Light-driven autonomous swing of multi-layered hydrogel.

Nakamura Shunsuke S Yamanaka Momoka M Oishi Yushi Y Narita Takayuki T

RSC advances 20221123 52

Light-driven self-oscillators without electronic circuits or conventional heat engines are carbon-emission-free systems and hold promise for developing autonomous transmission pumps and self-swimming micromotors. Thermosensitive hydrogels as self-oscillators can be used in the exploitation of low-temperature heat sources and in medical applications since the driving temperature is close to body temperature. Here, the autonomous swinging of the hydrogel was achieved by irradiating a constant ligh ...[more]

PMID: 36505673

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