Polímeros: Ciência e Tecnologia
Polímeros: Ciência e Tecnologia
Scientific & Technical Article

Inscription of Local Surface Relief Gratings with a Scanning Near-field Optical Microscope on an Azo-polymer Film

Oliveira, Elisabeth A. de; Brehmer, Ludwig; Stiller, Burkhard; Bechtold, Ivan H.

Downloads: 0
Views: 199


A Scanning Near-field Optical Microscope (SNOM) was used to inscribe locally limited Surface Relief Gratings (SRGs) on pDR1M, which is an azo-polymer film. The influence of parameters such as the line scanning time and the line spacing on the amplitude and the period of the gratings is discussed. SRGs have been used to orient Liquid Crystals (LCs), where the LC alignment takes place due to the elastic distortions of the nematic medium close to the surface. In addition, the photoalignment of the azo-chromophores was also used to induce LC alignment. In this work we investigate the use of local SGRs together with the photoalignment to get a local control of the LC alignment properties. The advantage of this method is that it is reversible and the gratings can easily be erased.


Azo-polymer, surface relief gratings, SNOM, liquid crystal


1. Nuyken, O.; Scherer, C.; Baindl, A.; Brenner, A. R.; Dahn, U.; Gärtner, R.; Kaiser-Röhfich, S.; Kollefrath, R.; Matusche, P. & Voit, B. - Prog. Polym. Sci., 22, p. 22 (1997).

2. Dhanabalan, A.; Mendonça, C. R.; Balogh, D. T.; Misoguti, L.; Constantino, C. J. L.; Giacometti, J. A.; Zilio, S. C. & Oliveira Jr., O. N. - Macromolecules, 32, p. 5277 (1999).

3. Stracke, A.; Wendorff, J. H.; Goldmann, D.; Janietz, D. & Stiller, B. - Adv. Mat., 12, p. 282 (2000).

4. Maack, J.; Ahuja, R. C.; Mobius, D.; Tachibana, H. & Matsumoto, M. - Thin Solid Films, 242, p. 122 (1994).

5. Nikolova, L.; Todorov, T.; Ivanov, M.; Andruzzi, F.; Hvilsted, S. & Ramanujam, P. S. - Appl. Opt., 35, p. 3835 (1996).

6. Rochon, P.; Batella, E. & Natansohn, A. - Appl. Phys. Lett., 66, p. 136 (1995).

7. Vismanathan, N. K.; Kim, D. Y.; Bian, S.; Williams, J. M.; Liu, W.; Li, L.; Samuelson, L.; Kumar, J. & Tripathy, S. K. - J. Mat. Chem., 9, p. 1941 (1999).

8. Labarthet, F. L.; Bruneel, J. L.; Buffeteau, T.; Sourisseau, C.; Huber, M. R.; Zilker, S. J. & Bieringer, T. - Phys. Chem. Chem Phys, 22, p. 5154 (2000).

9. Natansohn, A. & Rochon, P. - Chem. Rev., 102, p. 4139 (2002).

10. Bian, S.; Williams, J. M.; Kim, D. Y.; Li, L.; Balasubramanian, S.; Kumar, J. & Tripathy, S. K. - J. Appl. Phys., 86, p. 4498 (1999).

11. Oliveira Jr., O. N.; Li, L.; Kumar, J. & Tripathy, S. K. - “­Surface Relief Gratings on Azobenzene-Containing Films”, in: Photoreactive Organic Thin Films, Academic Press, CA, San Diego (2002).

12. Thiegui, L. T.; Barberi, R.; Bonvent, J. J.; Oliveira, E. A.; Giacometti, J. A. & Balogh, D. T. - Phys. Rev. E, 67, p. 041701 (2003).

13. Newsome, C. J.; O’Neill, M.; Farley, R. J. & Bryan-Brown; G. P. - Appl. Phys. Lett., 72, p. 2078 (1998).

14. Kim, M.-H.; Kim, J.-D.; Fukuda, T. & Matsuda, H. - Liq. Cryst., 27, p. 1633 (2000).

15. Berreman, D. W. - Phys. Rev. Lett., 28, p. 1683 (1972).

16. Stiller, B.; Karageorgiev, P.; Buchsteiner, A.; Geue, Th.; Henneberg, O.; Brehmer, L.; Natansohn, A. & Hollricher, O. - Adv. Opt. Mat., 5122, p. 176 (2003); Stiller, B.; Karageorgiev, P.; Geue, Th.; Morawetz, K.; Saphiannikova, M.; Mechau, N. & Neher, D. - Phys. Low-Dim. Struct., ½, p. 129 (2004).

17. Stiller, B.; Geue, T.; Morawetz, K. & Saphiannikova, M. - Journal of Microscopy, 219, p. 109 (2005).

18. Geue, T. M.; Schultz, M.; Grenzer, J.; Pietsch, U.; Natansohn, A. L. & Rochon, P. L. - J. Appl. Phys., 87, p. 7712 (2000).

19. Alpha-SNOM user manual, WITec GmbH Germany, Hövelsinger Weg D89081 ULM.

20. Barrett, C. J.; Natansohn, A. L. & Rochon, P. L. - J. Phys. Chem., 100, p. 8836 (1996); Kulikovska, O.; Gharagozloo-Hubmann, K. & Stumpe, J. - Adv. Opt. Mat., 4802, p. 85 (2002).

21. Bryan-Brown, G. P. & Sage, I. C. - Liq. Cryst., 20, p. 825 (1996).

22. Schadt, M.; Schmitt, K.; Kozinkov, V. & Chigrinov, V. G. - Jpn. J. Appl. Phys., 31, p. 2135 (1992).

23. Pidduck, A. J.; Haslam, S. D.; Bryan-Brown, G. P.; Bannister, R. & Kitely, I. D. - Appl. Phys. Lett., 71, p. 2907 (1997).
588371147f8c9d0a0c8b46ff polimeros Articles
Links & Downloads

Polímeros: Ciência e Tecnologia

Share this page
Page Sections