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Article Dans Une Revue Journal of Physical Chemistry Letters Année : 2018

Direct Liquid to Crystal Transition in a Quasi-Two-Dimensional Colloidal Membrane

Thomas Gibaud
Doru Constantin

Résumé

Using synchrotron-based small angle x-ray scattering, we study rigid fd viruses assembled into isolated monolayers from mixtures with a non-absorbing polymer, which acts as osmotic agent. As the polymer concentration increases we observe a direct liquid to crystal transition, without an intermediate hexatic phase, in contrast with many other similar systems, such as concentrated DNA phases or packings of surfactant micelles. We tentatively attribute this effect to the difference in stiffness. The liquid phase can be well described by a hard-disk fluid, while we model the crystalline one as a hexagonal harmonic lattice and we evaluate its elastic constants.
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Dates et versions

hal-01869127 , version 1 (06-09-2018)

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Thomas Gibaud, Doru Constantin. Direct Liquid to Crystal Transition in a Quasi-Two-Dimensional Colloidal Membrane. Journal of Physical Chemistry Letters, 2018, 9 (15), pp.4302-4307. ⟨10.1021/acs.jpclett.8b01524⟩. ⟨hal-01869127⟩
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