Light-Driven Continual Oscillatory Rocking of a Polymer Film.

ChemistryOpen
Marina Pilz da CunhaAlbert P H J Schenning

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.

References

Jan 27, 2015·ACS Applied Materials & Interfaces·Li Yu, Haifeng Yu
Jul 5, 2016·Nature Communications·Kamlesh KumarAlbertus P H J Schenning
Jul 21, 2016·Advanced Materials·Dong-Dong HanHong-Bo Sun
Nov 11, 2016·Nature Communications·Jeong Jae WieTimothy J White
Aug 28, 2019·Chemical Communications : Chem Comm·Marina Pilz da CunhaMichael G Debije
Nov 9, 2019·Nature Communications·Hao ZengArri Priimagi
Feb 14, 2020·Advanced Materials·Metin Sitti, Diederik S Wiersma
Mar 7, 2020·Advanced Materials·Joselle M McCrackenTimothy J White
Mar 11, 2020·Advanced Science·Marina Pilz da CunhaAlbert P H J Schenning

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