OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 2 — Jan. 22, 2007
  • pp: 652–659

The anisotropic nanomovement of azo-polymers

H. Ishitobi, M. Tanabe, Z. Sekkat, and S. Kawata  »View Author Affiliations

Optics Express, Vol. 15, Issue 2, pp. 652-659 (2007)

View Full Text Article

Enhanced HTML    Acrobat PDF (299 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Nanoscale polymer movement is induced by a tightly focused laser beam in an azo-polymer film just at the diffraction limit of light. The deformation pattern that is produced by photoisomerization of the azo dye is strongly dependent on the incident laser polarization and the longitudinal focus position of the laser beam along the optical axis. The anisotropic photo-fluidity of the polymer film and the optical gradient force played important roles in the light induced polymer movement. We also explored the limits of the size of the photo-induced deformation, and we found that the deformation depends on the laser intensity and the exposure time. The smallest deformation size achieved was 200 nm in full width of half maximum; a value which is nearly equal to the size of the diffraction limited laser spot.

© 2007 Optical Society of America

OCIS Codes
(160.5470) Materials : Polymers
(210.4810) Optical data storage : Optical storage-recording materials
(240.6670) Optics at surfaces : Surface photochemistry

ToC Category:
Optics at Surfaces

Original Manuscript: October 18, 2006
Revised Manuscript: December 5, 2006
Manuscript Accepted: December 11, 2006
Published: January 22, 2007

H. Ishitobi, M. Tanabe, Z. Sekkat, and S. Kawata, "The anisotropic nanomovement of azo-polymers," Opt. Express 15, 652-659 (2007)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. Z. Sekkat and W. Knoll, ed., Photoreactive Organic Thin Films, (Academic Press, USA, 2002).
  2. K. Koyayashi, C. Egami and Y. Kawata, "Optical storage media with Dye-Doped Minute Sphere on Polymer Films," Opt. Rev. 10, 262-266 (2003). [CrossRef]
  3. C. Hubert, A. Rumyantseva, G. Lerondel, J. Grand, S. Kostcheev, L. Billot, A. Vial, R. Bachelot, P. Royer, S-H Chang, S. K. Gray, G. P. Wiederrecht, and G. C. Schatz, "Near-field photochemical imaging of Nobel Metal Nanostructures," Nano Lett. 5, 615-619 (2005). [CrossRef] [PubMed]
  4. Y. Gilbert, R. Bachelot, A. Vial, G. Lerondel, P. Royer, A. Bouhelier, and G. P. Wiederrecht," Photoresponsive polymers for topographic simulation of the optical near-field of a nanometer sized gold tip in a highly focused laser beam," Opt. Express 13, 3619-3624 (2005). [CrossRef] [PubMed]
  5. P. Karageorgiev, D. Neher, B. Schulz, B. Stiller, U. Pietsch, M. Giersig, and L. Brehmer, "From anisotropic photo-fluidity towards nanomanipulation in the optical near-field," Nat. Mater. 4, 699-703 (2005). [CrossRef] [PubMed]
  6. Z. Sekkat and M. Dumont, "Photoassisted poling of Azo Dye Doped Polymeric Films at room temperature," Appl. Phys. B 54, 486-489 (1992). [CrossRef]
  7. F. Charra, F. Kajzar, J. M. Nunzi, P. Raimond, and E. Idiart, "Light-induced second-harmonic generation in azo-dye polymers," Opt. Lett. 18, 941-943 (1993). [CrossRef] [PubMed]
  8. P. Rochon, E. Batalla, and A. Natansohn, "Optically induced surface gratings on azoaromatic polymer films," Appl. Phys. Lett. 66, 136-138 (1995). [CrossRef]
  9. D. Y. Kim, S. K. Tripathy, L. Li, and J. Kumar, "Laser-induced holographic surface relief gratings on nonlinear optical polymer films," Appl. Phys. Lett. 66, 1166-1168 (1995). [CrossRef]
  10. Z. Sekkat, D. Yasumatsu, and S. Kawata, "Pure photo orientation of Azo dye in polyurethanes and quantification of orientation of spectrally overlapping Isomers," J. Phys. Chem. B 106, 12407-12417 (2002). [CrossRef]
  11. P. Lefin, C. Fiorini, J. M. Nunzi, "Anisotropy of the photoinduced translation diffusion of azo-dyes," Opt. Mater. 9, 323-328 (1998). [CrossRef]
  12. F. L. Labarthet, J. L. Bruneel, T. Buffeteau, and C. Sourisseau, "Chromophore Orientations upon irradiation in gratings inscribed on Azo-Dye Polymer Films: A combined AFM and Confocal Raman Microscopic Study," J. Phys. Chem. B 108, 6949-6960 (2004). [CrossRef]
  13. A. Natansohn and P. Rochon, "Photo induced motions in Azobenzene-based polymers," in Photoreactive Organic Thin Films, Z. Sekkat and W. Knoll, ed., (Academic Press, USA, 2002), Chap. 13, and references therein.
  14. O. N. Oliveira, L. Li, J. Kumar, and S. Tripathy, "Surface-relief gratings on Azobenzene-containing films," in Photoreactive Organic Thin Films, Z. Sekkat and W. Knoll, ed., (Academic Press, USA, 2002), Chap. 14 and references therein.
  15. S. Bian, J. M. Williams, D. Y. Kim, L. Lin, S. Balasubramanian, J. Kumar and S. Tripathy, "Photo induced surface deformations on Azobenzene polymer films," J. Appl. Phys. 86, 4498-4508 (1999). [CrossRef]
  16. Y. Gilbert, R. Bachelot, P. Royer, A. Bouhelier, G. P. Wiederrecht, and L Novotny, "Longitudinal anisotropy of he photo induced molecular migration in Azobenzene polymer films," Opt. Lett. 31, 613-615 (2006). [CrossRef] [PubMed]
  17. T. Grosjean and D Courjon, "Photopolymers as vectorial sensors of the electric field," Opt. Express 14, 2203-2210 (2006). [CrossRef] [PubMed]
  18. Z. Sekkat, J. Wood, W. Knoll, W. Volksen, R. D. Miller, "Light-induced orientation in a high glass transition temperature polyimide with polar azo dyes in the side chain," J. Opt. Soc. Am. B 13, 1713-1724 (1996). [CrossRef]
  19. A. Ashkin, J. M. Dziedzic, J. E. Bjorkholm, and S. Chu, "Observation of a single-beam gradient force optical trap for dielectric particles," Opt. Lett. 11, 288-290 (1986). [CrossRef] [PubMed]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited