Strong vertical alignment of liquid crystal on porous anodic aluminum oxide film

IEEE/OSA Journal of Display Technology

Volumn 5, Issue 9, 2009, Pages 350-354

  Tang, Tsung Ta ^a   Kuo, Cheng Ying ^a   Pan, Ru Pin ^a   Shieh, Jia Min ^b   Pan, Ci Ling ^c  

^a NATIONAL CHIAO TUNG UNIVERSITY   (Taiwan)

^b NATIONAL NANO DEVICE LABORATORIES   (Taiwan)

^c NATIONAL TSING HUA UNIVERSITY   (Taiwan)

Author keywords

Anodic aluminum oxide (AAO); Liquid crystals (LCs); Vertical alignment

Indexed keywords

AMINOPROPYL; ANCHORING STRENGTH; ANODIC ALUMINUM OXIDE (AAO); ANODIC-ALUMINUM OXIDE FILMS; LIQUID CRYSTAL ALIGNMENT; OCTADECYL; POLAR ANCHORING STRENGTH; PORE ARRAYS; PORE DIAMETERS; POROUS ANODIC ALUMINUM OXIDE FILMS; VERTICAL ALIGNMENT;

ALIGNMENT; ALUMINUM; CHLORINE COMPOUNDS; CRYSTALS; LIGHT SOURCES; LIQUID CRYSTALS; OXIDE FILMS; OXIDES;

ALUMINA;

EID: 69249090181     PISSN: 1551319X     EISSN: None     Source Type: Journal    
DOI: 10.1109/JDT.2009.2021541     Document Type: Article

References (26)

1. M. Nakamura, "Surface topography and alignment of liquid crystals on rubbed oxide surfaces," J. Appl. Phys., vol.52, no.7, pp. 4561-4567, Jul. 1981.
2. P. Chaudhari, J. Lacey, J. Doyle, E. Galligan, S. C. A. Lien, A. Cal-legari, G. Hougham, N. D. Lang, P. S. Andry, R. John, K. H. Yang, M. Lu, C. Cai, J. Speidell, S. Purushothaman, J. Ritsko, M. Samant, J. Stöhr, Y. Nakagawa, Y. Katoh, Y. Saitoh, K. Sakai, H. Satoh, S. Oda-hara, H. Nakano, J. Nakagaki, and Y. Shiota, "Atomic-beam alignment of inorganic materials for liquid-crystal displays," Nature, vol.411, pp. 56-59, May 2001.
3. H. Y. Wu, T. T. Tang, C. C. Wang, Pan R. P., S. J. Chang, and J. C. Hwang, "Controllable alignment modes of nematic liquid crystals on argon ion beam bombarded polyimide films," Mol. Cryst. Liq. Cryst., vol.475, no.1, pp. 45-55, Jan. 2007.
4. Pan R. P., H. Y. Chiu, Y. F. Lin, and J. Y. Huang, "Surface topography and alignment effects in UV-modified polyimide films with mcron size patterns," Chinese J. Phys., vol.41, no.2, pp. 177-184, Apr. 2003.
5. O. Yaroshchuk, L. G. Cada, M. Sonpatki, and L.-C. Chien, "Liquid-crystal photoalignment using low-molecular-weight photo-cross-linkable composites," Appl. Phys. Lett., vol.79, no.1, pp. 30-32, Jul. 2001.
6. D. W. Berreman, "Solid surface shape and the alignment of an adjacent nematic liquid crystal," Phys. Rev. Lett., vol.28, no.26, pp. 1683-1686, Jun. 1972.
7. S. Faetti, "Azimuthal anchoring energy of a nematic liquid crystal at a grooved interface," Phys. Rev. A, vol.36, no.1, pp. 408-410, Jul. 1987.
8. Y. F. Lin, S. Y. Lu, and R. P.Pan, "Temperature dependence of az-imuthal anchoring strength of liquid crystals on microgrooved glass substrate," Jpn. J. Appl. Phys., vol.44, no.12, pp. 8552-8556, 2005.
9. F. Lin, M. C. Tsou, and R. P. Pan, "Alignment of liquid crystals by ion etched grooved glass surfaces," Chinese J. Phys., vol.43, no.6, pp. 1066-1073, Dec. 2005.
10. S. Faetti, M. Gatti, V. Palleschi, and T. J. Sluckin, "Almost critical behavior of the anchoring energy at the interface between a nematic liquid crystal and a SiO substrate," Phys. Rev. Lett., vol.55, no.16, pp. 1681-1684, Oct. 1985.
11. H. Yokoyama, S. Kobayashi, and H. Kamei, "Temperature dependence of the anchoring strength at a nematic liquid crystal-evaporated sio interface," J. Appl. Phys., vol.61, no.9, pp. 4501-4518, May 1987.
12. J. L. Janning, "Thin film surface orientation for liquid crystals," Appl. Phys. Lett., vol.21, no.4, pp. 173-174, Aug. 1972.
13. C. R. Martin, "Membrane-based synthesis of nanomaterials," Chem. Mater., vol.8, no.8, pp. 1739-1746, Aug. 1996.
14. R. A. Caruso and M. Antonietti, "Sol-gel nanocoating: An approach to the preparation of structured materials," Chem. Mater., vol.13, no.10, pp. 3272-3282, Jul. 2001.
15. F. Keller, M. S. Hunter, and D. L. Robinson, "Structural features of oxide coatings on aluminum," J. Electrochem. Soc., vol.100, no.9, pp. 411-419, Sep. 1953.
16. O. Jessensky, F. Müller, and U. Gösele, "Self-organized formation of hexagonal pore arrays in anodic alumina," Appl. Phys. Lett., vol.72, no.10, pp. 1173-1175, Mar. 1998.
17. A. P. Li, F. Müller, A. Bimer, K. Nielsch, and U. Gösele, "Hexagonal pore arrays with a 50-420 nm interpore distance formed by self-organization in anodic alumina," J. Appl. Phys., vol.84, no.11, pp. 6023-6026, Dec. 1998.
18. A. P. Li, F. Müller, A. Bimer, K. Nielsch, and U. Gösele, "Polycrys-talline nanopore arrays with hexagonal ordering on aluminum," J. Vac. Sci. Technol. A, vol.17, no.4, pp. 1428-1431, Jul. 1999.
19. T. Kyotani, L. F. Tsai, and A. Tomita, "Preparation of ultrafine carbon tubes in nanochannels of an anodic aluminum oxide film," Chem. Mater., vol.8, pp. 2109-2113, 1996.
20. D.Routkevitch,T.Bigioni, M. Moskovits, andJ.M. Xu, "Electrochemical fabrication of CdS nanowire arrays in porous anodic aluminum oxide templates," J. Phys. Chem., vol.100, no.33, pp. 14037-14047, Aug. 1996.
21. D. Al-Mawlawi, C. Z. Liu, and M. Moskovits, "Nanowires formed in anodic oxide nanotemplates," J. Mater. Res., vol.9, no.4, pp. 1014-1018, 1994.
22. T. Maeda and K. Hiroshima, "Vertically aligned nematic liquid crystal on anodic porous alumina," Jpn. J. Appl. Phys., vol. 43, no. 8A, pp. L1004-L1006, 2004.
23. T. Maeda and K. Hiroshima, "Tilted liquid crystal alignment on asym-mertrically grooved porous alumina film," Jpn. J. Appl. Phys., vol.44, no.26, pp. L845-L847, 2005.
24. H. Masuda and M. Satoh, "Fabrication of gold nanodot array using anodic porous alumina as an evaporation mask," Jpn. J. Appl. Phys., vol. 35, no. 1B, pp. L126-L129, 1996.
25. T. J. Scheffer and J. Nehring, "Accurate determination of liquid-crystal tilt bias angles," J. Appl. Phys., vol.48, no.5, pp. 1783-1792, May 1977.
26. K. H. Yang and C. Rosenblatt, "Determination of the anisotropic potential at the nematic liquid crystal-to-wall interface," Appl. Phys. Lett., vol.43, no.1, pp. 62-64, Jul. 1983.