Ways of increasing the response rate of electrically controlled optical devices based on nematic liquid crystals

Amosova, L. P.; Васильев, В. Н.; Иванова, Н. Л.; Konshina, E. A.

doi:10.1364/jot.77.000079

Cited by 9 publications

(5 citation statements)

References 27 publications

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“…Liquid crystals (LCs) flow like liquids but in their physical properties they are anisotropic 15. The optical properties of LCs are widely studied and applied (e.g., LC displays),16 and applications of polymeric liquid‐crystalline structures are discussed as actuators and sensors 17. In this context, many publications have studied the orientation, ordering, and phase behavior of liquid‐crystalline substances supported on porous materials 18a–d.…”

Section: Introduction and Conceptmentioning

confidence: 99%

Surface‐Functionalized Ionic Liquid Crystal–Supported Ionic Liquid Phase Materials: Ionic Liquid Crystals in Mesopores

et al. 2011

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The influence of confinement on the ionic liquid crystal (ILC) [C(18)C(1)Im][OTf] is studied using differential scanning calorimetry (DSC), polarized optical microscopy (POM), and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The ILC studied is supported on Si-based powders and glasses with pore sizes ranging from 11 to 50 nm. The temperature of the solid-to-liquid-crystalline phase transition seems mostly unaffected by the confinement, whereas the temperature of the liquid-crystalline-to-liquid phase transition is depressed for smaller pore sizes. A contact layer with a thickness in the order of 2 nm is identified. The contact layer exhibits a phase transition at a temperature 30 K lower than the solid-to-liquid-crystalline phase transition observed for the neat ILC. For applications within the "supported ionic liquid phase (SILP)" concept, the experiments show that in pores of diameter 50 nm a pore filling of α>0.4 is sufficient to reproduce the phase transitions of the neat ILC.

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Section: Introduction and Conceptmentioning

confidence: 99%

Surface‐Functionalized Ionic Liquid Crystal–Supported Ionic Liquid Phase Materials: Ionic Liquid Crystals in Mesopores

et al. 2011

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“…However, in the last years, nematic LCs with response times lower than 3 ms [64] and 2 ms [65], as well as nanosecond response [66] have appeared. And different techniques to reduce the response time below 1 ms [67] have also been reported.…”

Section: Optical Router With Output Power Controlmentioning

confidence: 99%

Recent Advances in Wavelength-Division-Multiplexing Plastic Optical Fiber Technologies

Montero¹,

Garcilopez²,

VázquezGarcía³

et al. 2015

Advances in Optical Fiber Technology: Fundamental Optical Phenomena and Applications

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“…The optical characteristics of the test cells were measured at a wavelength of 0.65 μm, using the optical system described in Ref. 11. A semiconductor laser module served as the radiation source.…”

Section: Investigation Of the Relief Of The Orienting Layers By Meansmentioning

confidence: 99%

The orientation of liquid crystals on obliquely deposited layers of SiO_2 and CeO_2

2014

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The surface texture is compared for silicon oxide and cerium oxide films obtained by oblique laser deposition at identical angles and deposition rates. This paper discusses how the crystallization tendency of the oxides affects the structure and relief of the deposited film-the length and tilt angle of the resulting columnar crystals to the substrate and the presence or absence of ridges of crystallites extended in a direction perpendicular to the deposition direction. The main types of surface relief formed by oblique deposition of oxides are considered, along with the various ways the liquid crystals are oriented by means of these reliefs. It is shown that the ratio of the sizes of the liquid-crystal molecules and the characteristic inhomogeneities of the surface relief serve as the main criterion for their longitudinal or transverse orientation, since orientation with a small contact area is energetically unfavorable.

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Ways of increasing the response rate of electrically controlled optical devices based on nematic liquid crystals

Cited by 9 publications

References 27 publications

Surface‐Functionalized Ionic Liquid Crystal–Supported Ionic Liquid Phase Materials: Ionic Liquid Crystals in Mesopores

Surface‐Functionalized Ionic Liquid Crystal–Supported Ionic Liquid Phase Materials: Ionic Liquid Crystals in Mesopores

Recent Advances in Wavelength-Division-Multiplexing Plastic Optical Fiber Technologies

The orientation of liquid crystals on obliquely deposited layers of SiO_2 and CeO_2

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