Control of liquid crystal pretilt angles by using organic/inorganic hybrid interpenetrating networks

Optics Express

Volumn 17, Issue 19, 2009, Pages 16603-16612

  Ahn, Dowon ^a   Jeong, Yong Cheol ^a   Lee, Seungwoo ^a   Lee, Jihye ^a   Heo, Yongjoon ^a   Park, Jung Ki ^a  

^a Korea Advanced Institute of Science and Technology (KAIST)   (South Korea)

Author keywords

[No Author keywords available]

Indexed keywords

LIQUID CRYSTALS; MICROCHANNELS;

AZIMUTHAL ANCHORING ENERGY; INTERPENETRATING POLYMER NETWORKS (IPNS); LIQUID CRYSTALS (LCS); ORGANIC/INORGANIC HYBRIDS; PLANAR ALIGNMENT; POLYDIMETHYLSILOXANE PDMS; POLYVINYL CINNAMATE; VERTICAL ALIGNMENT;

INTERPENETRATING POLYMER NETWORKS;

EID: 70349221389     PISSN: None     EISSN: 10944087     Source Type: Journal    
DOI: 10.1364/OE.17.016603     Document Type: Article

References (28)

1. K. Takatoh, M. Hasegawa, M. Koden, N. Itoh, R. Hasegawa, and M. Sakamoto, "Applications of nematic liquid crystals" in Alignment Technologies and Applications of Liquid Crystal Devices, G. W. Gray, J. W. Goodby, and A. Fukuda, eds. (Taylor & Francis, 2005), pp. 117-121.
2. J. L. Janning, "Thin film surface orientation for liquid crystals," Appl. Phys. Lett. 21(4), 173-174 (1972).
3. H. Hatoh, K. Shohara, Y. Kinoshita, and N. Ookoshi, "Molecular tilt direction in a slightly tilted homeotropic aligned liquid crystal cell," Appl. Phys. Lett. 63(26), 3577-3579 (1993).
4. G. P. Sinha, B. Wen, and C. Rosenblatt, "Large, continuously controllable nematic pretilt from vertical orientation," Appl. Phys. Lett. 79(16), 2543-2545 (2001).
5. H. D. Jayathilake, M. H. Zhu, C. Rosenblatt, A. N. Bordenyuk, C. Weeraman, and A. V. Benderskii, "Rubbinginduced anisotropy of long alkyl side chains at polyimide surfaces," J. Chem. Phys. 125(6), 064706 (2006).
6. F. S. Yeung, J. Y. Ho, Y. W. Li, F. C. Xie, O. K. Tsui, P. Sheng, and H. S. Kwok, "Variable liquid crystal pretilt angles by nanostructured surfaces," Appl. Phys. Lett. 88(5), 051910 (2006).
7. F. S. Yeung, F. C. Xie, J. T. Wan, F. K. Lee, O. K. Tsui, P. Sheng, and H.-S. Kwok, "Liquid crystal pretilt angle control using nanotextured surfaces," J. Appl. Phys. 99(12), 124506 (2006).
8. K. E. Vaughn, M. Sousa, D. Kang, and C. Rosenblatt, "Continuous control of liquid crystal pretilt angle from homeotropic to planar," Appl. Phys. Lett. 90(19), 194102 (2007).
9. J. Y. Ho, V. G. Chigrinov, and H. S. Kwok, "Variable liquid crystal pretilt angles generated by photoalignment of a mixed polyimide alignment layer," Appl. Phys. Lett. 90(24), 243506 (2007).
10. J.-H. Lee, D.-S. Kang, C. M. Clarke, and C. Rosenblatt, "Full control of nematic pretilt angle using spatially homogeneous mixtures of two polyimide alignment materials," J. Appl. Phys. 105(2), 023508 (2009).
11. J. B. Kim, K. C. Kim, H. J. Ahn, B. H. Hwang, D. C. Hyun, and H. K. Baik, "Variable liquid crystal pretilt angles on various compositions of alignment layers," Appl. Phys. Lett. 90(4), 043515 (2007).
12. J.-H. Seo, H. J. Jang, S. R. Lee, T.-H. Yoon, J. C. Kim, I.-B. Kang, and C. H. Oh, "Wide Pretilt Angle Control of Liquid Crystal Display Device by Ion Beam Exposure on the Vertical Aligning Layer," Jpn. J. Appl. Phys. 46, L1074-L1076 (2007).
13. S. Furumi, and K. Ichimura, "Photogeneration of High Pretilt Angles of Nematic Liquid Crystals by Non-Polarized Light Irradiation of Azobenzene-Containing Polymer Films," Adv. Funct. Mater. 14(3), 247-254 (2004).
14. B. Zhang, F. K. Lee, O. K. C. Tsui, and P. Sheng, "Liquid crystal orientation transition on microtextured substrates," Phys. Rev. Lett. 91(21), 215501 (2003).
15. J. B. Kim, K. C. Kim, H. J. Ahn, B. H. Hwang, J. T. Kim, S. J. Jo, C. S. Kim, H. K. Baik, C. J. Choi, M. K. Jo, Y. S. Kim, J. S. Park, and D. Kang, "No bias pi cell using a dual alignment layer with an intermediate pretilt angle," Appl. Phys. Lett. 91(2), 023507 (2007).
16. Y.-J. Lee, J. S. Gwag, Y.-K. Kim, S. I. Jo, S.-G. Kang, Y. R. Park, and J.-H. Kim, "Control of liquid crystal pretilt angle by anchoring competition of the stacked alignment layers," Appl. Phys. Lett. 94(4), 041113 (2009).
17. S.-C. Jeng, S.-J. Hwang, and C.-Y. Yang, "Tunable pretilt angles based on nanoparticles-doped planar liquidcrystal cells," Opt. Lett. 34(4), 455-457 (2009).
18. K. Usami, K. Sakamoto, J. Yokota, Y. Uehara, and S. Ushioda, "Pretilt angle control of liquid crystal molecules by photoaligned films of azobenzene-containing polyimide with a different content of side-chain," J. Appl. Phys. 104(11), 113528 (2008).
19. 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(Part 1, No. 7), 2155-2164 (1992).
20. S. J. Sung, K. Y. Cho, J. H. Yoo, W. S. Kim, H. S. Chang, I.-W. Cho, and J. K. Park, "Dimerization behavior of cinnamate group attached to flexible polymer backbone and its effect on the molecular orientation," Chem. Phys. Lett. 394(4-6), 238-243 (2004).
21. S. J. Sung, K. Y. Cho, H.-D. Hah, J.-M. Lee, H. K. Shim, and J. K. Park, "Two different reaction mechanisms of cinnamate side groups attached to the various polymer backbones," Polymer (Guildf.) 47(7), 2314-2321 (2006).
22. G. C. Meyer, "The influence of stannous octanolate on the polymerization of acrylic compounds," Makromol. Chem., Rapid. Commun. 4(4), 221-225 (1983).
23. X. W. He, J. M. Widmaier, J. E. Herz, and G. C. Meyer, "Polydimethylsiloxane/poly(methylmethacrylate) interpenetrating polymer networks: 1. Efficiency of stannous octoate as catalyst in the formation of polydimethylsiloxane networks in methyl methacrylate," Polymer (Guildf.) 30(2), 364-368 (1989).
24. X. W. He, J. M. Widmaier, J. E. Herz, and G. C. Meyer, "Polydimethylsiloxane/poly(methyl methacrylate) interpenetrating polymer networks: 2. Synthesis and properties," Polymer (Guildf.) 33(4), 866-871 (1992).
25. R. Vendamme, S.-Y. Onoue, A. Nakao, and T. Kunitake, "Robust free-standing nanomembranes of organic/inorganic interpenetrating networks," Nat. Mater. 5(6), 494-501 (2006).
26. S. Lee, Y.-C. Jeong, Y. Heo, S. I. Kim, Y.-S. Choi, and J.-K. Park, "Holographic photopolymers of organic/inorganic hybrid interpenetrating networks for reduced volume shrinkage," J. Mater. Chem. 19(8), 1105-1115 (2009).
27. Y. W. Li, J. Y. L. Ho, F. S. Y. Yeung, and H. S. Kwok, "Simultaneous determination of large pretilt angles and cell gap in liquid crystal displays," J. Disp. Technol. 4(1), 13-17 (2008).
28. X. T. Li, D. H. Pei, S. Kobayashi, and Y. Iimura, "Measurement of Azimuthal Anchoring Energy at Liquid Crystal/Photopolymer Interface," Jpn. J. Appl. Phys. 36(Part 2, No. 4A), L432-L434 (1997).