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Nonstandard electroconvection in a bent-core oxadiazole material

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Nonstandard electroconvection in a bent-core oxadiazole material. / Kaur, S.; Belaissaoui, A.; Goodby, J. W. et al.
In: Physical Review E, Vol. 83, No. 4, 041704, 08.04.2011.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Kaur, S, Belaissaoui, A, Goodby, JW, Goertz, V & Gleeson, HF 2011, 'Nonstandard electroconvection in a bent-core oxadiazole material', Physical Review E, vol. 83, no. 4, 041704. https://doi.org/10.1103/PhysRevE.83.041704

APA

Kaur, S., Belaissaoui, A., Goodby, J. W., Goertz, V., & Gleeson, H. F. (2011). Nonstandard electroconvection in a bent-core oxadiazole material. Physical Review E, 83(4), Article 041704. https://doi.org/10.1103/PhysRevE.83.041704

Vancouver

Kaur S, Belaissaoui A, Goodby JW, Goertz V, Gleeson HF. Nonstandard electroconvection in a bent-core oxadiazole material. Physical Review E. 2011 Apr 8;83(4):041704. doi: 10.1103/PhysRevE.83.041704

Author

Kaur, S. ; Belaissaoui, A. ; Goodby, J. W. et al. / Nonstandard electroconvection in a bent-core oxadiazole material. In: Physical Review E. 2011 ; Vol. 83, No. 4.

Bibtex

@article{d45eeb09a14a4c438b510641d8cfa8ab,
title = "Nonstandard electroconvection in a bent-core oxadiazole material",
abstract = "Electroconvection (EC) phenomena have been investigated in the nematic phase of a bent-core oxadiazole material with negative dielectric anisotropy and a frequency dependent conductivity anisotropy. The formation of longitudinal roll (LR) patterns is one of the predominant features observed in the complete frequency and voltage range studied. At voltages much above the LR threshold, various complex patterns such as the {"}crisscrossed{"} pattern, bimodal varicose, and turbulence are observed. Unusually, the nonstandard EC (ns-EC) instability in this material, is observed in a regime in which we measure the dielectric and conductivity anisotropies to be negative and positive respectively. A further significant observation is that the EC displays distinct features in the high and low temperature regimes of the nematic phase, supporting an earlier report that EC patterns could distinguish between regions that have been reported as uniaxial and biaxial nematic phases.",
keywords = "NEMATIC LIQUID-CRYSTALS, PATTERN-FORMING INSTABILITIES, PHASE, ALIGNMENT, MODEL",
author = "S. Kaur and A. Belaissaoui and Goodby, {J. W.} and V. Goertz and Gleeson, {H. F.}",
note = "{\textcopyright}2011 American Physical Society",
year = "2011",
month = apr,
day = "8",
doi = "10.1103/PhysRevE.83.041704",
language = "English",
volume = "83",
journal = "Physical Review E",
issn = "1539-3755",
publisher = "American Physical Society",
number = "4",

}

RIS

TY - JOUR

T1 - Nonstandard electroconvection in a bent-core oxadiazole material

AU - Kaur, S.

AU - Belaissaoui, A.

AU - Goodby, J. W.

AU - Goertz, V.

AU - Gleeson, H. F.

N1 - ©2011 American Physical Society

PY - 2011/4/8

Y1 - 2011/4/8

N2 - Electroconvection (EC) phenomena have been investigated in the nematic phase of a bent-core oxadiazole material with negative dielectric anisotropy and a frequency dependent conductivity anisotropy. The formation of longitudinal roll (LR) patterns is one of the predominant features observed in the complete frequency and voltage range studied. At voltages much above the LR threshold, various complex patterns such as the "crisscrossed" pattern, bimodal varicose, and turbulence are observed. Unusually, the nonstandard EC (ns-EC) instability in this material, is observed in a regime in which we measure the dielectric and conductivity anisotropies to be negative and positive respectively. A further significant observation is that the EC displays distinct features in the high and low temperature regimes of the nematic phase, supporting an earlier report that EC patterns could distinguish between regions that have been reported as uniaxial and biaxial nematic phases.

AB - Electroconvection (EC) phenomena have been investigated in the nematic phase of a bent-core oxadiazole material with negative dielectric anisotropy and a frequency dependent conductivity anisotropy. The formation of longitudinal roll (LR) patterns is one of the predominant features observed in the complete frequency and voltage range studied. At voltages much above the LR threshold, various complex patterns such as the "crisscrossed" pattern, bimodal varicose, and turbulence are observed. Unusually, the nonstandard EC (ns-EC) instability in this material, is observed in a regime in which we measure the dielectric and conductivity anisotropies to be negative and positive respectively. A further significant observation is that the EC displays distinct features in the high and low temperature regimes of the nematic phase, supporting an earlier report that EC patterns could distinguish between regions that have been reported as uniaxial and biaxial nematic phases.

KW - NEMATIC LIQUID-CRYSTALS

KW - PATTERN-FORMING INSTABILITIES

KW - PHASE

KW - ALIGNMENT

KW - MODEL

U2 - 10.1103/PhysRevE.83.041704

DO - 10.1103/PhysRevE.83.041704

M3 - Journal article

VL - 83

JO - Physical Review E

JF - Physical Review E

SN - 1539-3755

IS - 4

M1 - 041704

ER -