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Phys. Rev. Lett. 87, 015501 (2001) [4 pages]

A New Opto-Mechanical Effect in Solids

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H. Finkelmann and E. Nishikawa
Institut für Makromolekulare Chemie, Universität Freiburg, D79104 Freiburg, Germany

G. G. Pereira and M. Warner
Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom

Received 22 March 2001; published 15 June 2001

See accompanying Physics Focus

We propose that large, reversible shape changes in solids, of between 10%–400%, can be induced optically by photoisomerizing monodomain nematic elastomers. Empirical and molecular analysis of shape change and its relation to thermal effects is given along with a simple model of the dynamics of response. Our experiments demonstrate these effects for the first time and theory is compared qualitatively with our results.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.015501
DOI:
10.1103/PhysRevLett.87.015501
PACS:
61.30.-v, 81.40.Jj, 82.70.-y