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Proceedings Paper

A novel approach to tunable diffractive transmission gratings based on dielectric elastomer actuators
Author(s): Matthias Kollosche; Sebastian Döring; Guggi Kofod; Joachim Stumpe
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Paper Abstract

Dielectric elastomer actuators (DEA) of poly-styrene-ethylene-butadiene-styrene (SEBS) and commonly used VHB4910 tape were studied for voltage tunable optical transmission gratings. A new geometry is proposed, in which the grating is placed in an area without electrodes, permitting for light transmission through the device. Experiments were performed to implement surface relief gratings on DEA films from pattern masters made from holographic recorded gratings. Since the actuation strain of the DEA depends strongly on the boundary conditions, the desired voltage-controllable deformation of the grating can be achieved by choosing suitable manufacturing parameters. Conditions were found permitting a shift of up to 9 % in a 1 μm grating. A model based on independently measured material parameters is shown to describe the optical behavior.

Paper Details

Date Published: 9 April 2010
PDF: 10 pages
Proc. SPIE 7642, Electroactive Polymer Actuators and Devices (EAPAD) 2010, 76422Y (9 April 2010); doi: 10.1117/12.847533
Show Author Affiliations
Matthias Kollosche, Univ. Potsdam (Germany)
Sebastian Döring, Fraunhofer-Institut für Angewandte Polymerforschung (Germany)
Guggi Kofod, Univ. Potsdam (Germany)
Joachim Stumpe, Fraunhofer-Institut für Angewandte Polymerforschung (Germany)

Published in SPIE Proceedings Vol. 7642:
Electroactive Polymer Actuators and Devices (EAPAD) 2010
Yoseph Bar-Cohen, Editor(s)

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