Tunable pretilt angles based on nanoparticles-doped planar liquid-crystal cells

Shie-Chang Jeng, Shug June Hwang*, Chen Yu Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


The nanoparticles-induced vertical alignment technique was applied to generate variable liquid-crystal pretilt angles based on doping different concentrations of polyhedral oligomeric silsesquioxane (FOSS) nanoparticles in the planar-aligned liquid crystal cells. Competition between the homogeneously aligned polyimide layer and POSS-induced spontaneous vertical alignment domain generated the variable pretilt angle. Experimental results demonstrated that the pretilt angle θ p is a function of the doped POSS concentration and can be controlled continuously over the range of 0° <θ p ft, < 90°.

Original languageEnglish
Pages (from-to)455-457
Number of pages3
JournalOptics Letters
Issue number4
StatePublished - 15 Feb 2009

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