A new opto-mechanical effect in solids.

  title={A new opto-mechanical effect in solids.},
  author={Heino Finkelmann and Etsushi Nishikawa and Gilberto G. Pereira and Mark Warner},
  journal={Physical review letters},
  volume={87 1},
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.