Translational self-diffusion in the smectic phases of ferroelectric liquid crystals: An overview

Mario Cifelli, Valentina Domenici, Sergey V. Dvinskikh, Carlo Alberto Veracini, Herbert Zimmermann

Research output

11 Citations (Scopus)

Abstract

In this work, we present our recent results obtained in the field of translational self-diffusion studies by means of 1H NMR diffusometry in smectic phases formed by calamitic chiral liquid crystals. In particular, the diffusional behavior of chiral smectic phases with different clinicity, such as the ferroelectric and antiferroelectric phases, will be discussed on the basis of the results obtained on three different chiral smectogens. This research demonstrates that, despite previous assertions, out-of-plane translational diffusion in smectic phases is poorly affected by the clinicity of the phases, showing no discontinuity at the transition from synclinic to anticlinic structures, typical of the smectic C phases. We can conclude that diffusion basically reflects the layered smectic structure where in-plane diffusion is much faster and less hindered than the out-of-plane one.

Original languageEnglish
Pages (from-to)861-871
Number of pages11
JournalPhase Transitions
Volume85
Issue number10
DOIs
Publication statusPublished - 1 Oct 2012

Scopus subject areas

  • Materials Science(all)
  • Instrumentation

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