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Opto-Electronics Review

Editor-in-Chief: Jaroszewicz, Leszek

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1896-3757
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Volume 22, Issue 3

Issues

Photo-alignment of liquid crystals in micro capillaries with point-by-point irradiation

A. Siarkowska / M. Jóźwik / S. Ertman / T. Woliński / V. Chigrinov
Published Online: 2014-06-29 | DOI: https://doi.org/10.2478/s11772-014-0188-9

Abstract

A photo-alignment method for micro capillaries based on the SD-1 azo-dye is demonstrated. In this work a liquid-crystal molecules aligning layer is created by point-by-point irradiation of the azo-dye film by using an UV laser light. The method opens up new possibilities for an improved molecules’ orientation control in both glass- and polymer-based photonic liquid crystal fibres.

Keywords: photo-alignment; liquid crystal; photonic liquid crystal fibre

  • [1] P.S.J. Russell, “Photonic-crystal fibres”, J. Lightwave Technol. 24, 4729–4749 (2006). http://dx.doi.org/10.1109/JLT.2006.885258CrossrefGoogle Scholar

  • [2] T.R. Woliński, K. Szaniawska, K. Bondarczuk, P. Lesiak, A.W. Domański, R. Dąbrowski, E. Nowinowski-Kruszelnicki, and J. Wójcik, “Propagation properties of photonic crystal fibres filled with nematic liquid crystals”, Opto-Electron. Rev. 13, 177–182 (2005). Google Scholar

  • [3] T. Alkeskjold, J. Lagsgaard, A. Bjarklev, D. Hermann, A. Anawati, J. Broeng, J. Li, and S. Wu. “All-optical modulation in dye-doped nematic liquid crystal photonic fibre bandgap”, Opt. Express 12, 5857–5871 (2004). http://dx.doi.org/10.1364/OPEX.12.005857CrossrefGoogle Scholar

  • [4] A. Lorenz, R. Schuhmann, and H.S. Kitzerow, “Switchable waveguiding in two liquid-crystal-filled photonic crystal fibres”, Appl. Opt. 49, 3846–3853 (2010). http://dx.doi.org/10.1364/AO.49.003846CrossrefGoogle Scholar

  • [5] J. Cognard, “Alignment of nematic liquid-crystals and their mixtures”, Mol. Cryst. Liq. Cryst. Suppl. 1, 1–74 (1982). Google Scholar

  • [6] D. Zielke and J. Fruhauf, “Determination of rates for orientation-dependent etching”, Sensor Actuator A48, 151–156 (1995). http://dx.doi.org/10.1016/0924-4247(95)00993-0CrossrefGoogle Scholar

  • [7] B.J. Choi, S.V. Sreenivasan, S. Johnson, M. Colburn, and C.G. Wilson, “Design of orientation stages for step and flash imprint lithography”, Precis. Eng. 25, 192–199 (2001). http://dx.doi.org/10.1016/S0141-6359(01)00068-XCrossrefGoogle Scholar

  • [8] K. Honjo and A. Shindo, “Crystallinity of SiC coated on carbon fibre”, J. Ceramic Society of Japan 94, 172–178 (1986). Google Scholar

  • [9] M. Chychłowski, S. Ertman, E. Nowinowski-Kruszelnicki, and T.R. Woliński, “Escaped radial and planar liquid crystal orientation inside of capillaries”, Mol. Cryst. Liq. Cryst. 553, 127–132 (2012). http://dx.doi.org/10.1080/15421406.2011.609451CrossrefWeb of ScienceGoogle Scholar

  • [10] K. Vaughn, M. Sousa, D. Kang, and C. Rosenblatt, “Continuous control of liquid crystal pretilt angle from homeotropic to planar”, Appl. Phys. Lett. 90, 194102 (2007). http://dx.doi.org/10.1063/1.2737427CrossrefGoogle Scholar

  • [11] M. Chychłowski, E. Nowinowski-Kruszelnicki, and T.R. Woliński, “Liquid crystal orientation control in photonic liquid crystal fibres”, Proc. SPIE 7753, 41–45 (2011). Google Scholar

  • [12] M. Chychłowski and T.R. Woliński, “Splay orientation in a capillary”, Phot. Lett. of Poland 2, 180–182 (2010). Google Scholar

  • [13] V.G. Chigrinov, V.M. Kozenkov, and H.S. Kwok, Photoalignment of Liquid Crystal Materials: Physics and Applications, Wiley-SID series, 2008. http://dx.doi.org/10.1002/9780470751800Google Scholar

  • [14] V.G. Chigrinov, “Photoalignment and photopattering in liquid crystal photonics”, Proc. SPIE 8279, 11–20 (2012). Google Scholar

  • [15] M. Chychłowski, O. Yaroshchuk, R. Kravchuk, and T.R. Woliński, “Liquid crystal alignment in cylindrical microcapillaries”, Opto-Electron. Rev. 20, 47–52 (2012). http://dx.doi.org/10.2478/s11772-012-0002-5CrossrefGoogle Scholar

  • [16] M. Chychłowski, S. Ertman, E. Nowinowski-Kruszelnicki, R. Dąbrowski, and T.R. Woliński, “Comparision of different liquid crystal materials under planar and homeotropic boundary conditions in capillaries”, Acta Physica Polonica A120, 582–584 (2011). Google Scholar

  • [17] M. Schadt, K. Schmitt, V. Kozinkov, and V. Chigrinov, “Surface-induced parallel alignment of liquid crystals by linearly polymerized photopolymers”, Jpn. J. Appl. Phys. 31, 2155–2164 (1992). http://dx.doi.org/10.1143/JJAP.31.2155CrossrefGoogle Scholar

  • [18] V.G. Chigrinov, H.S. Kwok, H. Hasebe, H. Takatsu, and H. Takada, “Liquid-crystal photoaligning by azo dyes”, SID 16, 897–904 (2008). Google Scholar

  • [19] S. Ertman, A.K. Srivastava, V.G. Chigrinov, M. Chychłowski, and T.R. Woliński, “Patterned alignment of liquid crystal molecules in silica micro-capillaries”, Liq. Cryst. 40, 1–6 (2013). http://dx.doi.org/10.1080/02678292.2012.725869CrossrefWeb of ScienceGoogle Scholar

  • [20] O. Yaroshchuk and Y. Reznikov, “Photoalignment of liquid crystals: basic and current trends”, J. Mater. Chem. 22, 286–300 (2012). http://dx.doi.org/10.1039/c1jm13485jCrossrefGoogle Scholar

  • [21] V.G. Chigrinov, “Photoalignment and photopattering — A new challenge in liquid crystal photonics”, Crystals 3, 149–162 (2013). http://dx.doi.org/10.3390/cryst3010149CrossrefGoogle Scholar

About the article

Published Online: 2014-06-29

Published in Print: 2014-09-01


Citation Information: Opto-Electronics Review, Volume 22, Issue 3, Pages 178–182, ISSN (Online) 1896-3757, DOI: https://doi.org/10.2478/s11772-014-0188-9.

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© 2014 SEP, Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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