Anisotropic surface order in the isotropic phase of nematic liquid crystals

Salim Al Harthi*, A. K. George

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


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
Issue number4
Publication statusPublished - 1997

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


Dive into the research topics of 'Anisotropic surface order in the isotropic phase of nematic liquid crystals'. Together they form a unique fingerprint.

Cite this