Applied Physics Letters · 2008 · 51 citations · 15 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials ChemistryOptical MaterialsSpectroscopyCrystal ChemistryCrystal EngineeringCrystal SymmetryLiquid Crystal MaterialsLiquid CrystalsX-ray Photoelectron SpectroscopyCompositional EngineeringIon Beam ModificationLiquid Crystal AlignmentLiquid Crystal Alignment LayersLiquid Crystal Display MaterialsLiquid Crystal Electro-optic EffectLiquid Crystal Surface Alignment
The homogeneously aligned liquid crystal display on Ta2O5 via ion beam (IB) irradiation was first embodied with controllability of pretilt angle depending on incident angle of the IB. As a result of x-ray photoelectron spectroscopic analysis, the intensity of Ta–O and O–Ta bondings as a function of incident angle behaved reversely with the pretilt angle and the lowest amplitude was observed at 45°. It revealed that the creation of pretilt angle was attributed to the irradiation of the IB by breaking Ta–O and O–Ta bonding so orientational order was generated by directional IB. Comparable electro-optical characteristics to rubbed polyimide were also achieved.
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Variable liquid crystal pretilt angles by nanostructured surfaces
Fion Sze Yan Yeung, J. Ho, Y. W. Li et al. · Applied Physics Letters · 2006 · 151 citations
Natural Sciences, Materials Engineering, Materials Science +14