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Proceedings Paper

Nanoporous alumina films for display devices
Author(s): Vitaly Sokol; Sergey Gaponenko; Valentina Yakovtseva; George Litvinovich; Sergey Prislopsky; Andrey Lutich
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Paper Abstract

Anisotropic optical properties of free nanoporous anodic alumina films transparent in the visible spectrum for the restricted range of pore diameters and pore intervals are discussed. The basic experimental procedure is presented for the production of these films. Diagrams of elastic light scattering in two-dimensional nanoporous alumina structures demonstrated anisotropy due to the spatial distribution of the photon density of states because of the photonic band gap formation in materials with a periodic change of the refraction index on the scale of the wavelength. A birefringence value (the difference in the normal and tangential refraction indices) was found from the measurements and computer modeling to be up to 0.08. Light scattered along pores was experimentally found to have a polarization perpendicular to the polarization of the incident light. The results obtained show that the nanoporous structure of anodic alumina films can be purposefully used to control a light propagation, namely, to perform anisotropic light scattering in LCD backlight systems as well as potential modification of light polarization.

Paper Details

Date Published: 17 June 2009
PDF: 6 pages
Proc. SPIE 7377, Twelfth International Workshop on Nanodesign Technology and Computer Simulations, 73770R (17 June 2009); doi: 10.1117/12.836976
Show Author Affiliations
Vitaly Sokol, Belarusian State Univ. of Informatics and Radiotechnics (Belarus)
Sergey Gaponenko, Stepanov Institute of Physics (Belarus)
Valentina Yakovtseva, Belarusian State Univ. of Informatics and Radiotechnics (Belarus)
George Litvinovich, Belarusian State Univ. of Informatics and Radiotechnics (Belarus)
Sergey Prislopsky, Stepanov Institute of Physics (Belarus)
Andrey Lutich, Stepanov Institute of Physics (Belarus)


Published in SPIE Proceedings Vol. 7377:
Twelfth International Workshop on Nanodesign Technology and Computer Simulations
Alexander I. Melker; Vladislav V. Nelayev, Editor(s)

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