Anisotropic surface order in the isotropic phase of nematic liquid crystals

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A spinning-drop technique was used to study the thermal variation of surface tension of two nematic liquid crystals at the interface with an isotropic fluid. A sharp increase in interfacial tension was observed in the vicinity of the nematic-isotropic transition. The interfacial tension-temperature characteristics, unlike monotonically decreasing dependence found in most isotropic fluids, showed regions of positive slope, both in the isotropic and anisotropic phases. A positive slope in the isotropic region of the liquid crystal is interesting since it implies that excess order has developed at the surface while the bulk interior remains isotropic.

Original languageEnglish
Pages (from-to)519-523
Number of pages5
JournalCrystal Research and Technology
Volume32
Issue number4
Publication statusPublished - 1997

Fingerprint

Nematic liquid crystals
Surface tension
interfacial tension
liquid crystals
slopes
Liquid Crystals
Fluids
fluids
Liquid crystals
metal spinning
Temperature
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Anisotropic surface order in the isotropic phase of nematic liquid crystals. / Al Harthi, Salim; George, A. K.

In: Crystal Research and Technology, Vol. 32, No. 4, 1997, p. 519-523.

Research output: Contribution to journalArticle

@article{1e3e5b04856f4c48b5604e7d7db69766,
title = "Anisotropic surface order in the isotropic phase of nematic liquid crystals",
abstract = "A spinning-drop technique was used to study the thermal variation of surface tension of two nematic liquid crystals at the interface with an isotropic fluid. A sharp increase in interfacial tension was observed in the vicinity of the nematic-isotropic transition. The interfacial tension-temperature characteristics, unlike monotonically decreasing dependence found in most isotropic fluids, showed regions of positive slope, both in the isotropic and anisotropic phases. A positive slope in the isotropic region of the liquid crystal is interesting since it implies that excess order has developed at the surface while the bulk interior remains isotropic.",
author = "{Al Harthi}, Salim and George, {A. K.}",
year = "1997",
language = "English",
volume = "32",
pages = "519--523",
journal = "Crystal Research and Technology",
issn = "0232-1300",
publisher = "John Wiley and Sons Inc.",
number = "4",

}

TY - JOUR

T1 - Anisotropic surface order in the isotropic phase of nematic liquid crystals

AU - Al Harthi, Salim

AU - George, A. K.

PY - 1997

Y1 - 1997

N2 - A spinning-drop technique was used to study the thermal variation of surface tension of two nematic liquid crystals at the interface with an isotropic fluid. A sharp increase in interfacial tension was observed in the vicinity of the nematic-isotropic transition. The interfacial tension-temperature characteristics, unlike monotonically decreasing dependence found in most isotropic fluids, showed regions of positive slope, both in the isotropic and anisotropic phases. A positive slope in the isotropic region of the liquid crystal is interesting since it implies that excess order has developed at the surface while the bulk interior remains isotropic.

AB - A spinning-drop technique was used to study the thermal variation of surface tension of two nematic liquid crystals at the interface with an isotropic fluid. A sharp increase in interfacial tension was observed in the vicinity of the nematic-isotropic transition. The interfacial tension-temperature characteristics, unlike monotonically decreasing dependence found in most isotropic fluids, showed regions of positive slope, both in the isotropic and anisotropic phases. A positive slope in the isotropic region of the liquid crystal is interesting since it implies that excess order has developed at the surface while the bulk interior remains isotropic.

UR - http://www.scopus.com/inward/record.url?scp=0030651148&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030651148&partnerID=8YFLogxK

M3 - Article

VL - 32

SP - 519

EP - 523

JO - Crystal Research and Technology

JF - Crystal Research and Technology

SN - 0232-1300

IS - 4

ER -