Direct Liquid to Crystal Transition in a Quasi-Two-Dimensional Colloidal Membrane
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.
Domaines
Matière Molle [cond-mat.soft]
Fichier principal
Constantin_2018_preprint.pdf (590.12 Ko)
Télécharger le fichier
SI_Constantin_2018.pdf (317.2 Ko)
Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...