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Light-Driven Continual Oscillatory Rocking of a Polymer Film.

ABSTRACT: Achieving oscillatory motion in polymers without requiring on/off switching of stimuli is a current challenge. Hereby, a free-standing liquid crystal polymer (LCP) is demonstrated to undergo a sustained oscillatory motion when triggered by light, moving back and forth, resembling the motion of a rocking-chair. Two polymer films having different azobenzene photo-switches have been studied, revealing photoswitch requirements as well as illumination conditions necessary to sustain oscillations. The motion presented here shows how feedback loops involving light-triggered actuation, self-shadowing and a shifting center of gravity can be utilized to achieve self-sustained motion in free-standing polymers.

SUBMITTER: Pilz da Cunha M

PROVIDER: S-EPMC7646255 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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Light-Driven Continual Oscillatory Rocking of a Polymer Film.

Pilz da Cunha Marina M Peeketi Akhil R AR Ramgopal Adithya A Annabattula Ratna K RK Schenning Albert P H J APHJ

ChemistryOpen 20201106 11

Achieving oscillatory motion in polymers without requiring on/off switching of stimuli is a current challenge. Hereby, a free-standing liquid crystal polymer (LCP) is demonstrated to undergo a sustained oscillatory motion when triggered by light, moving back and forth, resembling the motion of a rocking-chair. Two polymer films having different azobenzene photo-switches have been studied, revealing photoswitch requirements as well as illumination conditions necessary to sustain oscillations. The ...[more]

PMID: 33204586

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