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Issue 32, 2017, Issue in Progress
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Light activated non-reciprocal motion in liquid crystalline networks by designed microactuator architecture

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Abstract

Light responsive liquid crystalline networks were prepared by photopolymerization of azobenzene-doped mesogen mixtures and applied for production of micro-actuators by a laser writing technique. Adjusting the cross-linker content was found to be an efficient and easy way to control the dynamics of light-induced deformation from the micro- up to the macro-meter length scales. Starting from a complete characterization of the response of millimeter-sized stripes under irradiation with different sources (LED and laser light), micro-structures based on different monomer mixtures were analyzed for micro-actuator preparation. Double stripes, able to perform a light driven asymmetric movement due to the different mixture properties, were created by a double step process through a laser writing system. These results are a simple demonstration of an optically activated non-reciprocal movement in the microscale by a chemical material manipulation. Moreover, we demonstrate a rapid actuator dynamics that allows a movement in the second time scale for macrostructures and a millisecond actuation in the microscale.

Graphical abstract: Light activated non-reciprocal motion in liquid crystalline networks by designed microactuator architecture

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Publication details

The article was received on 19 Mar 2017, accepted on 27 Mar 2017 and first published on 05 Apr 2017


Article type: Paper
DOI: 10.1039/C7RA03224B
Citation: RSC Adv., 2017,7, 19940-19947
  • Open access: Creative Commons BY license
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    Light activated non-reciprocal motion in liquid crystalline networks by designed microactuator architecture

    D. Martella, D. Antonioli, S. Nocentini, D. S. Wiersma, G. Galli, M. Laus and C. Parmeggiani, RSC Adv., 2017, 7, 19940
    DOI: 10.1039/C7RA03224B

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