Multiscale model for photoinduced molecular motion in azo polymers

Mathieu L. Juan, Jérôme Plain*, Renaud Bachelot, Pascal Royer, Stephen K. Gray, Gary P. Wiederrecht

*Corresponding author for this work

Research output: Contribution to journalArticle

100 Citations (Scopus)


Light-induced isomerization processes in azobenzene-containing polymers produce mass transport that is of much interest for nanoscale imaging and lithography. Yet, despite the development of numerous models to simulate the mass transport mechanism, no model precisely describes all the experimental observations. We develop a new statistical approach that correctly reproduces light-driven mass motion in azobenzene-containing polymers with a high degree of accuracy. Comparisons with experiments show that our model predicts the nanoscale topographic modifications for many different incident field configurations, including optical nearfields produced by plasmonic structures with complex polarization states. In particular, the model allows the detailed molecular motions that lead to these topographic modifications to be identified.

Original languageEnglish
Pages (from-to)1573-1579
Number of pages7
JournalACS Nano
Issue number6
Publication statusPublished - 23 Jun 2009


  • Mass transport
  • Molecular motion modeling
  • Nanolithography
  • Photochemical imaging
  • Photoisomerizable azo polymers
  • Plasmonics

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