Frank elasticity revisited: Contribution of rotational entropy

Jun Ichi Fukuda, Hiroshi Yokoyama

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


In previous molecular theories of nematic liquid crystals, rotational entropy, or the entropy loss due to molecular alignment, has been believed to make no contribution to Frank elasticity. We show that this is not true, using a field-theoretical method developed in polymer physics. We also give an exact expression of the contribution of rotational entropy to Frank elasticity for rod-like liquid crystals in terms of the orientational tensor order parameter.

Original languageEnglish
Pages (from-to)151-156
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Publication statusPublished - 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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