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All-Optical Reversible Actuation of Photochromic-Polymer Microsystems

Authors

  • A. Athanassiou,

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  • M. Kalyva,

    1. Foundation for Research and Technology-Hellas (FORTH), Institute of Electronic Structure and Laser (IESL), 711 10, Heraklion, Crete, Greece
    2. University of Crete, Physics Department, 71 003 Heraklion, Crete, Greece
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  • K. Lakiotaki,

    1. Foundation for Research and Technology-Hellas (FORTH), Institute of Electronic Structure and Laser (IESL), 711 10, Heraklion, Crete, Greece
    2. University of Crete, Chemistry Department, 71 409 Heraklion, Crete, Greece
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  • S. Georgiou,

    1. Foundation for Research and Technology-Hellas (FORTH), Institute of Electronic Structure and Laser (IESL), 711 10, Heraklion, Crete, Greece
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  • C. Fotakis

    1. Foundation for Research and Technology-Hellas (FORTH), Institute of Electronic Structure and Laser (IESL), 711 10, Heraklion, Crete, Greece
    2. University of Crete, Physics Department, 71 003 Heraklion, Crete, Greece
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  • The authors thank Prof. S. H. Anastasiadis (Physics Department, University of Crete, Greece) and Prof. Jacques Roovers (National Research Council, Ottawa, Ontario, Canada) for their useful suggestions.

Abstract

Optomechanical actuation of polymer films doped with spiropyran photochromic molecules is demonstrated by the reversible bending of the films upon laser irradiation (see Figure). The photoactuators are fully wavelength controllable and capable of operating reversibly in a few seconds. The reversible macroscopic mechanical effect is found to be associated with the interactions between different stereoisomers and formation of merocyanine aggregates.

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