Structural memory effect in liquid crystal phases stabilised by silica particle aggregates

L. Almásy, A. Jákli, L. Rosta, G. Pépy

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A SANS study revealed the orientational stabilisation of the smectic structure by non-mesogenic polymer networks dispersed in a liquid crystal matrix. In the present experiment, hydrophobic silica particles were dispersed in liquid crystal 8CB. The Bragg reflections from smectic layers show that the alignment of the layers is perfect if the system is cooled down in a magnetic field. After annealing without magnetic field and cooling down to smectic A phase, the previous alignment of the liquid crystal is recovered. Temperature and concentration dependence of the effect has been analysed by recording the diffraction pattern from smectic layers.

Original languageEnglish
Pages (from-to)996-998
Number of pages3
JournalPhysica B: Condensed Matter
Volume241-243
Publication statusPublished - 1997

Fingerprint

Liquid Crystals
Silicon Dioxide
Liquid crystals
liquid crystals
Silica
silicon dioxide
Data storage equipment
magnetic cooling
Magnetic refrigeration
alignment
Magnetic fields
magnetic fields
Diffraction patterns
Polymers
diffraction patterns
Stabilization
stabilization
recording
Annealing
temperature dependence

Keywords

  • Layer orientation
  • Liquid crystal
  • Silica aggregates

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Structural memory effect in liquid crystal phases stabilised by silica particle aggregates. / Almásy, L.; Jákli, A.; Rosta, L.; Pépy, G.

In: Physica B: Condensed Matter, Vol. 241-243, 1997, p. 996-998.

Research output: Contribution to journalArticle

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