Stochastic model for photoinduced surface relief grating formation through molecular transport in polymer films

Journal Article · Mon Oct 13 00:00:00 EDT 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2999625· OSTI ID:21175664

Juan, M L; Plain, J; Bachelot, R; Royer, P ^[1]; Gray, S K ^[2]; Wiederrecht, G P ^[3]

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1. Laboratoire de Nanotechnologie et d'Instrumentation Optique, ICD CNRS FRE 2848, Universite de Technologie de Troyes, BP 2060 Troyes (France)
2. Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

We use a stochastic model to study photoinduced surface relief grating (SRG) formation due to molecular transport in azobenzene polymer films. The model is shown to reproduce the essential experimental features of SRG formation. In particular, it predicts SRG formation under both p and s polarizations, and the double peaked topographies that can occur at early times of the process. The evolving molecular positions and orientations during exposure are also followed, providing a useful mechanistic picture of SRG dynamics.

• OSTI ID: 21175664
• Journal Information: Applied Physics Letters, Vol. 93, Issue 15; Other Information: DOI: 10.1063/1.2999625; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FILMS
GRAIN ORIENTATION
ISOMERIZATION
MONTE CARLO METHOD
PHOTOCHEMISTRY
POLARIZATION
POLYMERS
STOCHASTIC PROCESSES
TOPOGRAPHY