The liquid crystal light valve, an optical-to-optical interface device

Jacobson, A. D.; Beard, Terry D.; Bleha, W. P.; Margerum, J. D.; Wong, Sabrina

doi:10.1016/0031-3203(73)90005-8

Cited by 12 publications

(3 citation statements)

References 3 publications

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“…Liquid crystals commonly are used to manufacture LCD screens for displays in computers, TVs, and watches. [1][2][3][4][5][6][7][8] They are attractive materials for fundamental research because of their structural, transitional, thermal, orientational, optical, and photoacoustic properties. [9][10][11][12][13][14][15][16] One of the liquid crystals, octylcyanobiphenyl (8CB), has drawn considerable attention in research regarding its prototypical thermotropic nature in phase transition studies.…”

Section: Introductionmentioning

confidence: 99%

“…Liquid crystals exhibit unique phase transitions and thermal properties that make them useful for a number of potential applications. Liquid crystals commonly are used to manufacture LCD screens for displays in computers, TVs, and watches. − They are attractive materials for fundamental research because of their structural, transitional, thermal, orientational, optical, and photoacoustic properties. − …”

Section: Introductionmentioning

confidence: 99%

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Thermodynamics of Activated Phase Transitions of 8CB: DSC and MC Calorimetry

2006

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The present paper reports the heating rate effect on the phase transitions of a pure liquid crystal octylcyanobiphenyl (8CB) with use of Differential Scanning Calorimetry (DSC) and Modulation Calorimetry (MC) techniques. The DSC runs were taken at various temperature ramp rates from 20 to 0.5 K/min for heating and cooling scans. Well-defined endothermic/exothermic peaks were found at the melting/crystallization, smectic-A to nematic (SmA-N), and nematic to isotropic (N-I) transitions on heating/cooling scans, respectively. All transitions shift in temperature significantly with different ramp rates. The temperature shift of C(p) peaks between heating and cooling scans indicates the order of the transitions. In addition, all transitions follow an Arrhenius behavior. The activation energy of a transition increases as the total energy involved in the transition decreases. The respective enthalpy and entropy change of each transition provides information on the Gibbs free energy. The significance of the results is discussed in terms of the order of transitions. A comparative analysis of MC and DSC techniques highlights the significance of the two techniques. MC is a practicable tool for observing the phase dynamics whereas DSC is a good tool for studying the rate kinematics of the transitions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermodynamics of Activated Phase Transitions of 8CB: DSC and MC Calorimetry

2006

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“…A beam splitter then allows one to read out this spatially-varying reflectance pattern. The liquid-crystal light valve [45] is one instance of this class. Other classes of SLMs such as liquid-crystal display panels and acousto-optic modulators allow one to dynamically alter the pattern using electronics.…”

Section: Spatial Light Modulators (Slms)mentioning

confidence: 99%

Optical computing

Woods¹,

Naughton²

2009

Applied Mathematics and Computation

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We consider optical computers that encode data using images and compute by transforming such images. We give an overview of a number of such optical computing architectures, including descriptions of the type of hardware commonly used in optical computing, as well as some of the computational efficiencies of optical devices. We go on to discuss optical computing from the point of view of computational complexity theory, with the aim of putting some old, and some very recent, results in context. Finally, we focus on a particular optical model of computation called the continuous space machine. We describe some results for this model including characterisations in terms of well-known complexity classes.

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Interface devices and memory materials

Knight¹

1981

Topics in Applied Physics

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The liquid crystal light valve, an optical-to-optical interface device

Cited by 12 publications

References 3 publications

Thermodynamics of Activated Phase Transitions of 8CB: DSC and MC Calorimetry

Thermodynamics of Activated Phase Transitions of 8CB: DSC and MC Calorimetry

Optical computing

Interface devices and memory materials

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