Near-field photochemical imaging of noble metal nanostructures

Christophe Hubert, Anna Rumyantseva, Gilles Lerondel, Johan Grand, Sergeï Kostcheev, Laurent Billot, Alexandre Vial, Renaud Bachelot, Pascal Royer, Shih Hui Chang, Stephen K. Gray, Gary P. Wiederrecht, George C. Schatz

Research output: Contribution to journalArticlepeer-review

204 Citations (Scopus)


The sub-diffraction imaging of the optical near-field in nanostructures, based on a photochemical technique, is reported. A photosensitive azobenzene-dye polymer is spin coated onto lithographic structures and is subsequently irradiated with laser light. Photoinduced mass transport creates topographic modifications at the polymer film surface that are then measured with atomic force microscopy (AFM). The AFM images correlate with rigorous theoretical calculations of the near-field intensities for a range of different nanostructures and illumination polarizations. This approach is a first step toward additional methods for resolving confined optical near fields, which can augment scanning probe methodologies for high spatial resolution of optical near fields.

Original languageEnglish
Pages (from-to)615-619
Number of pages5
JournalNano letters
Issue number4
Publication statusPublished - 2005 Apr

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering


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