Silicon oxides as alignment surfaces for vertically-aligned nematics in photonic devices

• Autorzy: Oton E. , López-Andrés S. , Bennis N. , Otón J. M. , Geday M. A.

Identyfikatory

DOI

10.2478/s11772-014-0182-2

• Języki publikacji: EN

Abstrakty

EN

A comparative study on alignment performance and microstructure of inorganic layers used for liquid crystal cell conditioning has been carried out. The study has focused on two specific materials, SiOx and SiO₂, deposited under different conditions. The purpose was to establish a relationship between layer microstructure and liquid crystal alignment. The surface morphology has been studied by FESEM and AFM. An analysis on liquid crystal alignment, pretilt angle, response time, contrast ratio and the conditions to develop backflow effect (significant rise time increase due to pure homeotropic alignment) on vertically-aligned nematic cells has been carried out. A technique to overcome the presence of backflow has been identified. The full comparative study of SiOx and SiO₂ layer properties and their influence over liquid crystal alignment and electrooptic response is presented.

Słowa kluczowe

EN

SiOx; SiO2; silicon oxide; vertically aligned nematics; photonic devices; morphology characterization

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2014
• Tom: Vol. 22, No. 2
• Strony: 92--100
• Opis fizyczny: Bibliogr. 20 poz., il., wykr.

Twórcy

autor

Oton E.

• CEMDATIC, ETSI Telecomunicación, Universidad Politécnica de Madrid, 30 Complutense Av., 28040 Madrid, Spain

autor

López-Andrés S.

• Dpto. Cristalografía y Mineralogía, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, 28040 Madrid, Spain

autor

Bennis N.

• CEMDATIC, ETSI Telecomunicación, Universidad Politécnica de Madrid, 30 Complutense Av., 28040 Madrid, Spain

autor

Otón J. M.

• CEMDATIC, ETSI Telecomunicación, Universidad Politécnica de Madrid, 30 Complutense Av., 28040 Madrid, Spain

autor

Geday M. A.

• CEMDATIC, ETSI Telecomunicación, Universidad Politécnica de Madrid, 30 Complutense Av., 28040 Madrid, Spain

Bibliografia

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