5 December 2005 Light-driven polymer actuators
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Proceedings Volume 6048, Optomechatronic Actuators and Manipulation; 604801 (2005) https://doi.org/10.1117/12.626527
Event: Optomechatronic Technologies 2005, 2005, Sapporo, Japan
Abstract
New light-driven actuators based on films of polymer polyvinylidene fluoride are described. The actuators employ the photomechanical bending of the polymer film caused by low power (10 mW and less) laser radiation. The photomechanical effect combines various physical mechanisms, such as anisotropic thermal expansion, converse piezoelectric mechanism along with photovoltaic and pyrolelectric ones, while the mechanism of thermal expansion is dominant for slow motion. The static force applied by the actuators to external objects was measured with a torsion balance. It is proportional to the power of laser beam and could be as high as 10-4 N for a 50- micron film illuminated with a 10-mW laser beam. Mechanical vibrations of the strips of the photomechanical polymer were observed when the periodic laser pulses were used. The resonance frequency is inversely proportional to the square of the length of the strip. Resonance frequency measurements were used to determine the modulus of elasticity of the films, which was close to 3.0x109 Pa. Two possible applications are discussed: photonic switch and adaptive mirror. The proposed actuators have a potential of being used as the components of future light-driven micro/nano systems.
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Sergey S. Sarkisov, Sergey S. Sarkisov, LaQuieta Huey, LaQuieta Huey, Michael J. Curley, Michael J. Curley, Grigory Adamovsky, Grigory Adamovsky, Deborah Pekker, Deborah Pekker, Jai-Ching Wang, Jai-Ching Wang, "Light-driven polymer actuators", Proc. SPIE 6048, Optomechatronic Actuators and Manipulation, 604801 (5 December 2005); doi: 10.1117/12.626527; https://doi.org/10.1117/12.626527
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