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Observations of a streak texture in the hybrid-aligned smectic-C phase

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Abstract

A novel structure was observed below the smectic-A–smectic-C phase transition in a very thin open cell having an air interface above and enforced planar anchoring at the substrate below. The structure appears as periodic dark and light streaks running perpendicular to the oily streaks, which are present in the smectic-A phase [D. Coursault et al., Soft Matter, 2016, 12, 678]. These new streaks, which we call “soapy streaks”, form by extending from one oily streak to the next in discrete steps, eliminating optical evidence at visible wavelengths of the oily streaks. At lower temperatures the streaks can undulate and exhibit a sawtooth-like structure; such a structure is chiral in two dimensions. A possible scenario for the origin of these streaks is presented.

Graphical abstract: Observations of a streak texture in the hybrid-aligned smectic-C phase

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Publication details

The article was received on 27 Oct 2017, accepted on 02 Dec 2017 and first published on 07 Dec 2017


Article type: Paper
DOI: 10.1039/C7SM02129A
Citation: Soft Matter, 2018, Advance Article
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    Observations of a streak texture in the hybrid-aligned smectic-C phase

    I. R. Nemitz, I. Gryn, N. Boudet, R. P. Lemieux, M. Goldmann, B. Zappone, R. G. Petschek, C. Rosenblatt and E. Lacaze, Soft Matter, 2018, Advance Article , DOI: 10.1039/C7SM02129A

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