Twist-grain boundary phase induced by Au nanoparticles in a chiral liquid crystal host

Abstract : We report on the stabilisation of the liquid-crystalline, twist-grain boundary A (TGBA) phase in mixtures of a chiral liquid crystal and surface-functionalised spherical Au nanoparticles (NPs) of 10 nm diameter. The results, obtained by calorimetric, optical, small-angle X-ray and plasmon resonance measurements, demonstrate that a TGBA phase, which is metastable for the pure liquid crystal host, can be effectively stabilised for a 3 K range in the presence of NPs. Moreover, the role of NPs size on the TGBA stabilisation is briefly discussed.
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https://hal.archives-ouvertes.fr/hal-01527841
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Submitted on : Thursday, May 25, 2017 - 8:01:43 PM
Last modification on : Monday, July 8, 2019 - 3:30:28 PM

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Maja Trček, George Cordoyiannis, Brigita Rožič, Vassilios Tzitzios, George Nounesis, et al.. Twist-grain boundary phase induced by Au nanoparticles in a chiral liquid crystal host. Liquid Crystals, Taylor & Francis, 2017, 44 (10), pp.1575-1581. ⟨10.1080/02678292.2017.1306887⟩. ⟨hal-01527841⟩

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