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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 1, Iss. 8 — Dec. 1, 2011
  • pp: 1494–1501

Phase separation and pattern instability of laser-induced polymerization in liquid-crystal-monomer mixtures

Chandroth P. Jisha, Kuei-Chu Hsu, YuanYao Lin, Ja-Hon Lin, Kai-Ping Chuang, Chao-Yi Tai, and Ray-Kuang Lee  »View Author Affiliations

Optical Materials Express, Vol. 1, Issue 8, pp. 1494-1501 (2011)

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Directly written by a ultra-short femto-second laser pulse, we report the phase separation and pattern formation induced by polymerization in a liquid-crystal-monomer mixture. By varying the scanning speed of optical fields along a line, pattern transitions of photon-induced polymer structures are illustrated in shapes of double-humped, single-humped, and broken stripes. The experimental data collected by optical microscopic images are in a good agreement with numerical simulations based on a modified set of coupled 2 + 1 dimensional diffusion equations. The demonstration in this work provides a step for controlling phase separation morphologies as well as transferring patterns in polymer-dispersed liquid crystals.

© 2011 OSA

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(160.3710) Materials : Liquid crystals
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Liquid Crystals

Original Manuscript: September 15, 2011
Revised Manuscript: October 9, 2011
Manuscript Accepted: October 10, 2011
Published: November 4, 2011

Virtual Issues
Liquid Crystal Materials for Photonic Applications (2011) Optical Materials Express

Chandroth P. Jisha, Kuei-Chu Hsu, YuanYao Lin, Ja-Hon Lin, Kai-Ping Chuang, Chao-Yi Tai, and Ray-Kuang Lee, "Phase separation and pattern instability of laser-induced polymerization in liquid-crystal-monomer mixtures," Opt. Mater. Express 1, 1494-1501 (2011)

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  1. D. K. Yang and S. T. Wu, Fundamental of Liquid Crystal Devices (Wiley, 2006). [CrossRef]
  2. S. Moynihan, P. Lovera, D. O’Carroll, D. Iacopino, and G. Redmond, “Alignment and dynamic manipulation of conjugated polymer nanowires in nematic crystal hosts,” Adv. Mater.20, 2497–2502 (2008). [CrossRef]
  3. H. Tanaka, “Formation of network and cellular structures by viscoelastic phase separation,” Adv. Mater.21, 1872–1880 (2009). [CrossRef]
  4. H. Kikuchi, M. Yokota, Y. Hisakado, H. Yang, and T. Kajiyama, “Polymer-stabilized liquid crystal blue phases,” Nat. Mater.1, 64–68 (2002). [CrossRef]
  5. S.-Y. Lu and L.-C. Chien, “Electrically switched color with polymer-stabilized blue-phase liquid crystals,” Opt. Lett.35, 562–564 (2010). [CrossRef] [PubMed]
  6. J. Y. Kim, C. H. Cho, P. Palffy-Muhoray, M. Mustafa, and T. Kyu, “Polymerization-induced phase separation in a liquid-crystal-polymer mixture,” Phys. Rev. Lett.71, 2232–2235 (1993). [CrossRef] [PubMed]
  7. J. Y. Kim, H. Y. Woo, J. W. Baek, T. W. Kim, E. A. Song, S. C. Park, and D. W. Ihm, “Polymer-dispersed liquid crystal devices using highly conducting polymers as electrodes,” Appl. Phys. Lett.92, 183301 (2008).
  8. H. Ren, S. T. Wu, and Y. H. Lin, “In situ observation of fringing-field-induced phase separation in a liquid-crystal-monomer mixture,” Phys. Rev. Lett.100, 117801 (2008). [CrossRef] [PubMed]
  9. E. A. Buyuktanir, M. W. Frey, and J. L. West, “Self-assembled, optically responsive nematic liquid crystal/polymer core-shell fibers: Formation and characterization,” Polymer51, 4823–4830 (2010). [CrossRef]
  10. R. Sigel, G. Fytas, N. Vainos, S. Pispas, and N. Hadjichristidis, “Pattern formation in homogeneous polymer solutions induced by a continuous-wave visible laser,” Science297, 67–69 (2000). [CrossRef]
  11. S. Matsuo, S. Juodkazis, and H. Misawa, “Femtosecond laser microfabrication of periodic structures using a microlens array,” Phys. Rev. A80, 683–685 (2005).
  12. Y. Ichihashi, P. Henzi, M. Bruendel, J. Mohr, and D. G. Rabus, “Polymer waveguides from alicyclic methacrylate copolymer fabricated by deep-UV exposure,” Opt. Lett.32, 379–381 (2007). [CrossRef] [PubMed]
  13. C. H. Lee, H. Yoshida, Y. Miura, A. Fujii, and M. Ozaki, “Local liquid crystal alignment on patterned micro-grating structures photofabricated by two photon excitation direct laser writing,” Appl. Phys. Lett.93, 173509 (2008). [CrossRef]
  14. K. Tokuoka, H. Yoshida, Y. Miyake, C. H. Lee, Y. Miura, S. Yusuke, F. Satoshi, A. Fujii, Y. Shimizu, and M. Ozaki, “Planar alignment of columnar liquid crystals in microgroove structures,” Mol. Cryst. Liq. Cryst.510, 126–133 (2009). [CrossRef]
  15. Data Sheet Licristal®E7, (Merck KGaA, Germany, 2001).
  16. N. Gheorghiu, J. L. West, A. V. Glushchenko, and M. Mitrokhin, “Patterned field induced polymer walls for smectic A bistable flexible displays,” App. Phys. Lett.88, 263511 (2006). [CrossRef]
  17. Yu. S. Kivshar and D. E. Pelinovsky, “Self-focusing and transverse instabilities of solitary waves,” Phys. Rep.331, 117–195 (2000). [CrossRef]
  18. Y. Y. Lin, R.-K. Lee, and Yu. S. Kivshar, “Soliton transverse instabilities in nonlocal nonlinear media,” J. Opt. Soc. Am. B25, 576–581 (2008). [CrossRef]
  19. Y. Y. Lin, R.-K. Lee, and Yu. S. Kivshar, “Transverse instability of TM solitons and nonlinear surface plasmons,” Opt. Lett.34, 2982–2984 (2009). [CrossRef] [PubMed]
  20. C. C. Bowley and G. P. Crawford, “Diffusion kinetics of formation of holographic polymer-dispersed liquid crystal display materials,” Appl. Phys. Lett.76, 2235–2237 (2000). [CrossRef]
  21. P. Rathi and T. Kyu, “Theory and computation of photopolymerization-induced phase transition and morphology development in blends of crystalline polymer and photoreactive monomer,” Phys. Rev. E79, 031802 (2009). [CrossRef]
  22. Q. Wang, D. Zhang, Y. Huang, Z. Ni, J. Chen, Y. Zhong, and S. Zhuang, “Type of tunable guided-mode resonance filter based on electro-optic characteristic of polymer-dispersed liquid crystal,” Opt. Lett.35, 1236–1238 (2010). [CrossRef] [PubMed]
  23. P. G. D. Gennes and J. Prost, The Physics of Liquid Crystals (Oxford University Press, 1995).
  24. S. R. Challa, S-Q. Wang, and J. L. Koenig, “In situ diffusion studies using spatially resolved infrared microspectroscopy,” Appl. Spectrosc.50, 1339–1344 (1996). [CrossRef]
  25. C.-C. Jeng, Y. Y. Lin, R.-C. Hong, and R.-K. Lee, “Optical pattern transitions from modulation to transverse instabilities in photorefractive crystals,” Phys. Rev. Lett.102, 253905 (2009). [CrossRef]

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