Liquid crystal light deflecting devices based on nonuniform anchoring

Valyukh, Sergiy; Valyukh, Iryna; Chigrinov, Vladimir G.; Kwok, Hoi Sing; Arwin, Hans

doi:10.1063/1.3526311

Cited by 14 publications

(23 citation statements)

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“…For instance, it has been reported recently that the development of LC devices based on nonuniform anchoring energy might be used as tunable light deflecting systems or active lenses. 39 Such a goal could be reach by tuning the density of nanotubes on the substrate during the CVD growth in order to induce a gradient of anchoring energy and of sheet resitivity.…”

Section: B Optical and Electrooptical Properties Of H-al-swnt Based mentioning

confidence: 99%

Horizontally-aligned carbon nanotubes arrays and their interactions with liquid crystal molecules: Physical characteristics and display applications

et al. 2012

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We report on the physical characteristics of horizonthally-grown Single-Walled Carbon Nanotubes (h-al-SWNT) arrays and their potential use as transparent and conducting alignment layer for liquid crystals display devices. Microscopy (SEM and AFM), spectroscopic (Raman) and electrical investigations demonstrate the strong anisotropy of h-al-SWNT arrays. Optical measurements show that h-al-SWNTs are efficient alignment layers for Liquid Crystal (LC) molecules allowing the fabrication of optical wave plates. Interactions between h-al-SWNT arrays and LC molecules are also investigated evidencing the weak azimuthal anchoring energy at the interface, which, in turn, leads to LC devices with a high pretilt angle. The electro-optical reponses of h-al-SWNT/LC cells demonstrate that h-al-SWNT arrays are efficient nanostructured electrodes with potential use for the combined replacement of Indium Tin Oxyde and polymeric alignment layers in conventional displays

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Section: B Optical and Electrooptical Properties Of H-al-swnt Based mentioning

confidence: 99%

Horizontally-aligned carbon nanotubes arrays and their interactions with liquid crystal molecules: Physical characteristics and display applications

et al. 2012

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“…Despite the apparent simplicity of the methods utilizing inhomogeneous alignment and several projects devoted to this subject [15][16][17][18][19], a set of questions related to the potential of the corresponding LC DOE remains unclear. For example, there is no clear evidence about the extreme characteristics that can be achieved by such kind of LC DOE.…”

Section: Introductionmentioning

confidence: 99%

“…Implementation of inhomogeneous alignment, in particular inhomogeneous anchoring [15,16] or the pre-tilt angle variation [17][18][19], makes possible to achieve a desired formation of the LC director distribution under a uniform electric field. The corresponding optical element can be controlled through a pair of continoues electrodes and be free of the drawbacks mentioned above.…”

Section: Introductionmentioning

confidence: 99%

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On liquid crystal diffractive optical elements utilizing inhomogeneous alignment

Valyukh¹,

Chigrinov²,

Kwok³

et al. 2012

Opt. Express

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Formation of a desired liquid crystal (LC) director distribution by the use of inhomogeneous anchoring and pre-tilt angle for electrically controlled diffractive optical elements (DOE) is studied. Such LC DOE can have high periodicity and diffraction efficiency. At the same time they are free of constructive regularities, e.g. a periodic arrangement of the electrodes or thickness deviations, which have undesired impact on diffractive characteristics of LC DOE of other types. We focus on evaluation of potential functional abilities of LC DOE with inhomogeneous alignment. The reasons causing restriction of the LC DOE diffraction efficiency and periodicity are considered. Approaches for improvement of characteristics of the LC DOE are discussed. ©2012 Optical Society of America

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“…Tunable LC light deflecting devices based on nonuniform anchoring energy were proposed [10]. These devices have uniform thicknesses of the layers they are composed of, and beam deviation is controlled with a uniform electrical field.…”

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confidence: 99%