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Journal of Display Technology

Journal of Display Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 6, Iss. 7 — Jul. 1, 2010
  • pp: 263–268

Dynamics and Electrooptics of Vertically Aligned Nematics With Induced Pretilt on ${\hbox{SiO}}_{x}$

Eva Otón, Sol López-Andrés, Carlos Carrasco-Vela, Beatriz Cerrolaza, Noureddine Bennis, and José Manuel Otón

Journal of Display Technology, Vol. 6, Issue 7, pp. 263-268 (2010)


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Abstract

The response time and contrast of vertically-aligned negative nematics depend critically on the aligning surface and its induced pretilt. Pretilt can be tuned up using obliquely evaporated inorganic oxides as alignment surface.A thorough study of pretilt angles induced by aligning surfaces of thermally evaporated ${\hbox{SiO}}_{x}$ has been carried out on several commercial and experimental negative nematic mixtures. Morphology of ${\hbox{SiO}}_{x}$ with different evaporation angles has been studied by Field Emission Scanning Electron Microscopy. Some morphological variations appear at specific evaporation angles. These are related to the pretilt induced by the surface and to the dynamic response of the device.

© 2010 IEEE

Citation
Eva Otón, Sol López-Andrés, Carlos Carrasco-Vela, Beatriz Cerrolaza, Noureddine Bennis, and José Manuel Otón, "Dynamics and Electrooptics of Vertically Aligned Nematics With Induced Pretilt on ${\hbox{SiO}}_{x}$," J. Display Technol. 6, 263-268 (2010)
http://www.opticsinfobase.org/jdt/abstract.cfm?URI=jdt-6-7-263

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