Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3073742
Keywords
light interference; light polarisation; organic compounds; surface structure; thin films
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Funding
- European Community [IST-2001-35503]
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We present a study of the formation of surface relief gratings in thin solid films containing azobenzene derivatives upon illumination with an interference pattern. This study is based on near-field microscopy techniques that provide real-time imaging of both the photomechanical response of the material and light excitation profile. We demonstrate that the material deformation follows two distinct regimes characterized by different kinetics, a different phase relative to the light intensity pattern, and a specific dependence on light polarization.
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