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


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
Issue number12
StatePublished - Dec 1 2012

Bibliographical note

Funding Information:
M.K. Paul, a BOYSCAST fellow, thanks the Department of Science and Technology (DST), New Delhi for his fellowship. This study was supported in part by Fast Track Project (DST)

Funding Information:
Grant no. SR/FTP/CS-43/2006 and National Science Foundation, Solid State Chemistry Program under Grant no. 0605760. Financial assistance provided by DST, DAE and UGC is gratefully acknowledged.


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


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