Search Results - "Gleeson, J T"

Anomalous Increase in Nematic-Isotropic Transition Temperature in Dimer Molecules Induced by a Magnetic Field by Salili, S M, Tamba, M G, Sprunt, S N, Welch, C, Mehl, G H, Jákli, A, Gleeson, J T

“…We have determined the nematic-isotropic transition temperature as a function of an applied magnetic field in three different thermotropic liquid crystalline…”
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Elasticity of lyotropic chromonic liquid crystals probed by director reorientation in a magnetic field by Zhou, Shuang, Nastishin, Yu A, Omelchenko, M M, Tortora, L, Nazarenko, V G, Boiko, O P, Ostapenko, T, Hu, T, Almasan, C C, Sprunt, S N, Gleeson, J T, Lavrentovich, O D

“…Using a magnetic Frederiks transition technique, we measure the temperature and concentration dependences of splay K1, twist K2, and bend K3 elastic constants…”
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Giant flexoelectricity of bent-core nematic liquid crystals by Harden, J, Mbanga, B, Eber, N, Fodor-Csorba, K, Sprunt, S, Gleeson, J T, Jákli, A

“…Flexoelectricity is a coupling between orientational deformation and electric polarization. We present a direct method for measuring the flexoelectric…”
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Direct observation of smectic layers in thermotropic liquid crystals by Zhang, C, Gao, M, Diorio, N, Weissflog, W, Baumeister, U, Sprunt, S, Gleeson, J T, Jákli, A

“…We demonstrate subnanometer resolution cryo-TEM imaging of smectic layers in the smectic and nematic phases of two bent-core liquid crystals. Our results show…”
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Fluctuation Modes of a Twist-Bend Nematic Liquid Crystal by Parsouzi, Z., Shamid, S. M., Borshch, V., Challa, P. K., Baldwin, A. R., Tamba, M. G., Welch, C., Mehl, G. H., Gleeson, J. T., Jakli, A., Lavrentovich, O. D., Allender, D. W., Selinger, J. V., Sprunt, S.

“…We report a dynamic light-scattering study of the fluctuation modes in a thermotropic liquid crystalline mixture of monomer and dimer compounds that exhibits…”
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Magnetic-field induced isotropic to nematic liquid crystal phase transition by Ostapenko, T, Wiant, D B, Sprunt, S N, Jákli, A, Gleeson, J T

“…We report on measurements of magnetic-field induced nematic order in the bent-core liquid crystal 4-chlororesorcinol bis[4-(4-n-dodecyloxybenzoyloxy)…”
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Spontaneously modulated chiral nematic structures of flexible bent-core liquid crystal dimers by Salili, S. M., Ribeiro de Almeida, R. R., Challa, P. K., Sprunt, S. N., Gleeson, J. T., Jákli, A.

“…We report the induction of spontaneously undulated chiral nematic structures of liquid crystal (LC) dimers with rigid aromatic molecular arms linked by…”
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Large flow birefringence of nematogenic bent-core liquid crystals by Bailey, C, Fodor-Csorba, K, Verduzco, R, Gleeson, J T, Sprunt, S, Jákli, A

“…We have found that bent-core liquid crystalline materials show exceptionally large intrinsic flow birefringence in their isotropic liquid phase. This effect is…”
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Twist-bend nematic liquid crystals in high magnetic fields by Challa, P K, Borshch, V, Parri, O, Imrie, C T, Sprunt, S N, Gleeson, J T, Lavrentovich, O D, Jákli, A

“…We present magneto-optic measurements on two materials that form the recently discovered twist-bend nematic (N_{tb}) phase. This intriguing state of matter…”
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Viscosities of a bent-core nematic liquid crystal by Dorjgotov, E., Fodor-Csorba, K., Gleeson, J. T., Sprunt, S., Jákli, A.

“…Viscosity measurements are reported for a bent-core nematic liquid crystal, 4- chloro-1,3-phenylenebis{4-[4′-(9-decenyloxy)benzoyloxy]} benzoate (ClPbis10BB)…”
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Electroconvection characterization of guest-host nematic liquid crystals for dynamic scattering mode applications by Shasti, Mansoureh, Gleeson, J. T., Luchette, Paul

“…The threshold voltage for electro-hydrodynamic convection (EHC) in nematic liquid crystals in the low-frequency convective regime is examined. The addition of…”
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Elastic constants and orientational viscosities of a bent-core nematic liquid crystal by Majumdar, M, Salamon, P, Jákli, A, Gleeson, J T, Sprunt, S

“…Using a combination of dynamic light scattering and Freedericksz transitions induced in applied magnetic and electric fields, we have determined the absolute…”
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Truly random number generator based on turbulent electroconvection by Gleeson, J. T.

“…We report an approach for generating truly random digital numbers. This approach is based on probing the chaotic and unpredictable fluctuations that take place…”
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Distribution of injected power fluctuations in electroconvection by Tóth-Katona, Tibor, Gleeson, J T

“…We report on the distribution spectra of the fluctations in the amount of power injected into a liquid crystal undergoing electroconvective flow. The…”
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Viscoelastic properties of a branched liquid crystal in the nematic phase by Challa, P.K., Chakraborty, S., Breckon, R., Zhang, C., Pardaev, S., Twieg, R.W., Jákli, A., Sprunt, S.N., Gleeson, J.T.

“…We report results from a comprehensive suite of measurements, including small angle X-ray scattering (SAXS), polarising optical microscopy, dynamic light…”
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Giant flexoelectricity in bent-core nematic liquid crystal elastomers by Harden, J., Chambers, M., Verduzco, R., Luchette, P., Gleeson, J. T., Sprunt, S., Jákli, A.

“…Recently ferroelectric ceramic and bent-core nematic liquid crystals have demonstrated flexoelectricity (coupling between curvature strains to electric…”
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Nonstandard electroconvection in a bent-core nematic liquid crystal by Wiant, D, Gleeson, J T, Eber, N, Fodor-Csorba, K, Jákli, A, Tóth-Katona, T

“…We characterize three nonstandard electrohydrodynamic instabilities in nematic liquid crystals composed of bent-core molecules. In addition to their shape,…”
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Critical behavior at the isotropic-to-nematic phase transition in a bent-core liquid crystal by Wiant, D, Stojadinovic, S, Neupane, K, Sharma, S, Fodor-Csorba, K, Jákli, A, Gleeson, J T, Sprunt, S

“…Magnetic birefringence and dynamic light scattering measurements of orientational order parameter fluctuations at the isotropic-nematic phase transition of a…”
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Dielectric technique to measure the twist elastic constant of liquid crystals: the case of a bent-core material by Salamon, P, Eber, N, Seltmann, J, Lehmann, M, Gleeson, J T, Sprunt, S, Jákli, A

“…The effect of director pretilt on the twist magnetic Fréedericksz transition of nematics was investigated in a planar cell. The director configuration was…”
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Dendritic growth of electrohydrodynamic convection in a nematic liquid crystal by GLEESON, J. T

“…Experiments show that dendritic growth can also occur in the very different context of electrohydrodynamic convection. Research results which cannot be…”
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