Ring defects in a strongly confined chiral liquid crystal

Jun Ichi Fukuda, Slobodan Žumer

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


We find numerically that a regular array of isolated ring defects can exist as a stable state in a highly chiral liquid crystal confined in a thin cell imposing fixed planar anchoring at the parallel confining surfaces. This peculiar defect structure can be stable when the cell thickness d is around 3/4 of the helical pitch p. A cell of thickness 3p/4 with parallel surface anchoring is incompatible with helical alignment that favors d=mp/2 (with m being an integer). Formation of ring defects can thus be regarded as a result of frustrations between the helical alignment with a specific pitch and the confining surfaces that prevent it.

Original languageEnglish
Article number097801
JournalPhysical review letters
Issue number9
Publication statusPublished - Mar 1 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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