Layer thinning transition in an achiral four-ring hockey stick shaped liquid crystal

Manoj Kr Paul, Rahul K. Nath, Brian Moths, Lidong Pan, Shun Wang, Rajdeep Deb, Yongqiang Shen, Nandiraju V.S. Rao, C. C. Huang

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Depolarized reflected light microscopy and high resolution optical reflectivity measurements have been conducted on free-standing films of an achiral four-ring hockey stick shaped liquid crystal exhibiting SmA-B2-SmX* transition sequence. A layer thinning transition above the bulk isotropic-SmA phase transition has been observed. This behaviour was highly irreproducible, indicating an irregular layer thinning transition. From optical reflectivity data, both thickness of the free-standing films and the smectic interlayer spacing were determined. This is the first report of the layer thinning transition in a hockey stick shaped liquid crystal.

Original languageEnglish (US)
Pages (from-to)1070-1078
Number of pages9
JournalPhase Transitions
Volume85
Issue number12
DOIs
StatePublished - Dec 1 2012

Keywords

  • Free-standing film
  • Hockey stick shaped liquid crystal
  • Intercalated smectic A phase
  • Optical reflectivity
  • Thinning transition

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