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Fabrication and Testing of Microfluidic Optomechanical Oscillators
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A new opto-mechanical effect in solids.

H Finkelmann1, E Nishikawa, G G Pereira

  • 1Institut für Makromolekulare Chemie, Universität Freiburg, D79104 Freiburg, Germany.

Physical Review Letters
|July 20, 2001
PubMed
Summary
This summary is machine-generated.

Large, reversible shape changes in solids (10%-400%) are induced optically using photoisomerization of nematic elastomers. This study demonstrates these effects for the first time, comparing experimental results with a simple dynamic model.

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Optics

Background:

  • Nematic elastomers are liquid crystalline materials with unique mechanical properties.
  • Photoisomerization is a light-induced molecular transformation.

Purpose of the Study:

  • To demonstrate optically induced large, reversible shape changes in solids.
  • To investigate the relationship between shape change, thermal effects, and molecular photoisomerization in nematic elastomers.

Main Methods:

  • Photoisomerization of monodomain nematic elastomers using light.
  • Empirical and molecular analysis of shape change dynamics.
  • Development of a simple model for response dynamics.

Main Results:

  • Achieved large, reversible shape changes (10%-400%) via optical induction.
  • Quantified the relationship between shape change and thermal effects.
  • Demonstrated the feasibility of optically controlled macroscopic shape deformation.

Conclusions:

  • Optical photoisomerization of nematic elastomers is a viable method for inducing significant, reversible shape changes.
  • Experimental findings are qualitatively consistent with the proposed dynamic model.
  • This work presents the first experimental demonstration of these optically driven shape transformations.