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Showing 1 to 10 of 10 for “"Liquid Crystal Devices"”.
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Polarization-independent Liquid Crystal Devices
Liquid crystal (LC) devices can be operated as amplitude modulators and phase modulators. LC amplitude modulation is commonly used in liquid crystal display (LCD) while phase-only modulation is useful for laser beam steering, tunable grating, prism, lens, and other photonic devices. Most LC devices …
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Fast Response Liquid Crystal Devices
Liquid crystal (LC) has been widely used for displays, spatial light modulators, variable optical attenuators (VOAs) and other tunable photonic devices. The response time of these devices is mainly determined by the employed liquid crystal material. How to obtain fast response for the LC devices is …
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Experimental and theoretical investigations into the switching of liquid crystal devices
This work addresses the dynamic switching of liquid crystal cells. While static measurements of the permittivity liquid crystal cells are well established, here a novel transient permittivity technique is developed and applied to several liquid crystalline substances in a variety of geometries. …
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Nanopatterned anchoring layers for liquid crystals
… the theory and fabrication of inhomogeneous Liquid Crystal anchoring layers. While chemical anchoring techniques have proved useful for many applications, especially Liquid Crystal Displays, they have thus far been unable to demonstrate the ability to provide anchoring energy that varies with …
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Liquid crystal photonic devices based on conductive polymers = Dispositivos fotónicos de cristal líquido basados en polímeros conductores
… and electrical responses in asymmetric liquid crystal devices, and manufacturing and characterization of liquid crystal lenses using conductive polymers as high resistivity electrodes. In the first part, several series of liquid crystal devices with dissimilar alignment layers (SiOx, …
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Mathematical models for polymer-nematic interactions
… a mathematical model that consists of a nematic liquid crystal layer sandwiched between two parallel bounding plates, across which an external field may be applied. Particular attention is paid to the effect of an applied field on the layer as well as the interaction between the liquid crystal …
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Next Generation Phase-only LCOS Device with Ultra-low Phase Flicker for Holographic Applications
Phase-only LCOS devices have become one of the most promising optical engines for digital holographic applications. However, the system performance can be degraded by the instability of the phase levels, i.e., the so-called phase flicker. For instance, a large phase flicker means a low spatial …
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Towards Engineering and Understanding of Guest Host Interaction Between Dopants and Liquid Crystals in Liquid Crystal Displays
Liquid crystal displays are intricate devices which consist of many cells that are filled with liquid crystal hosts. The operation of the liquid crystal cell is to modulate the polarisation of light, by varying their birefringence, which in turn can be used to control the intensity of light and …
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Tunable Liquid Crystal Photonic Devices
Liquid crystal (LC)-based adaptive optics are important for information processing, optical interconnections, photonics, integrated optics, and optical communications due to their tunable optical properties. In this dissertation, we describe novel liquid crystal photonic devices and their …