Anodic Porous and Pillar Structures for Vertical Alignment of Nematic Liquid Crystals

Lazarouk, S. K.; Sasinovich, D. A.; Smirnov, A.; Smirnov, A.; Murauski, Anatoli; Chigrinov, Vladimir G.; Kwok, Hoi Sing

doi:10.1142/9789812770950_0106

Cited by 2 publications

(3 citation statements)

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“…Tilt angle can be varied from 0 to 16 . 13) This is promising for LC alignment with pretilt angles. Thus anodization opens new possibilities for the fabrication of nanostructured alignment layers.…”

Section: Resultsmentioning

confidence: 98%

Porous and Pillar Structures Formed by Anodization for Vertical Alignment of Nematic Liquid Crystal

Lazarouk

Muravski

Sasinovich

et al. 2007

jjap

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Porous anodic alumina and pillar titania structures have been fabricated and used for the vertical alignment of nematic liquid crystals (LCs). Reliable LC penetration into pores was achieved for a pore entrance of more than 20 nm in width. The LC penetration into pillar structures has no restrictions owing to the absence of closed pore spaces. The aspect ratios of titania pillars ranged from 2 up 6, the maximum of which was limited by the mechanical stability of the fabricated pillars. The approaches developed are useful in fabricating LC projection displays.

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Section: Resultsmentioning

confidence: 98%

Porous and Pillar Structures Formed by Anodization for Vertical Alignment of Nematic Liquid Crystal

Lazarouk

Muravski

Sasinovich

et al. 2007

jjap

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“…It is possible to achieve many useful structures by anodizing the bi-layer structures, where top porous anodic oxide is used as a template for anodizing or etching the bottom layer. For example, titania columnar structure [1] and ultra-black silicon can be formed [14]. Masking makes easier the pore nucleation process in the bottom layer, therefore more regular porous structures in less aggressive electrolytes can be formed in the bottom layer.…”

Section: Porous Alumina Template Maskingmentioning

confidence: 99%

“…Electrochemical technologies have a high potential for displays and photonics applications because of its cheapness and simplicity, easiness to scaling to large substrates and low-temperature nature [1]. However, electrochemical processes at higher temperatures when glass substrates remain solid but get some ionic conductivity can provide a drastically wide range of possible applications.…”

Section: Introductionmentioning

confidence: 99%

Self-organized nanostructured anodic oxides for display applications

Jaguiro¹

2010

Semicond. phys. quantum electron. optoelectron.

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Electrochemical technologies have a high potential for display applications because of their cheapness and simplicity, easiness to scaling to large substrates and lowtemperature nature. However, in major display technologies the oxide films should be deposited on transparent conductive substrate, usually ITO on glass. For dielectric substrates like glasses, a special technology of current control is applied to anodizing metal films, which changes the oxide porous structure in a final stage and prevents formation of metal islands. To transform the residual metal nanowires into oxide, a special fading process similar to anoding bonding can be done. Usually, high reactivity electrolytes are used in the anodizing process, which destroys ITO layers. We have analyzed chemical properties of ITO in various anodizing electrolytes and found some suitable reagents and compositions. A lot of functional layers can be created by anodizing. For example, different filters may be formed by filling the pores by ink jet printing. Porous oxides can have low refractive indexes -lower than any bulk material, and can be used as effective antireflective coatings. A titanium oxide cover film forms "self-cleaning" surface due to its semiconductor photonics properties and oxygen production.

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Anodic Porous and Pillar Structures for Vertical Alignment of Nematic Liquid Crystals

Cited by 2 publications

References 0 publications

Porous and Pillar Structures Formed by Anodization for Vertical Alignment of Nematic Liquid Crystal

Porous and Pillar Structures Formed by Anodization for Vertical Alignment of Nematic Liquid Crystal

Self-organized nanostructured anodic oxides for display applications

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