Formation of the smectic-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math>crystal from a simple monatomic liquid

Metere, Alfredo; Oppelstrup, Tomas; Sarman, Sten; Laaksonen, Aatto; Dzugutov, Mikhail

doi:10.1103/physreve.88.062502

Cited by 5 publications

(6 citation statements)

References 26 publications

(41 reference statements)

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“…Besides, the two diffraction patterns in Fig. 2b look like those observed in typical smectic-B crystals [14,15]. They represent a structure composed of flat close-packed particle layers axially stacked in ABA order [16].…”

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confidence: 58%

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A smectic dodecagonal quasicrystal

et al. 2016

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We report a solid smectic phase that exhibits dodecagonal global order. It is composed of axially stacked hexagonally ordered particle layers, and its 12-fold rotational symmetry induced by the 30° rotation of adjacent layers with respect to each other. A quasicrystal was produced in a molecular-dynamics simulation of a single-component system of particles interacting via a spherically-symmetric potential. It was formed as a result of a first-order phase transition from an isotropic liquid state that occurred under constant-density cooling. This finding implies that a similarly structured quasicrystal can possibly be produced by the same class of systems as those forming smectic-B crystals. This quasicrystal can also be expected to arise in a system of spherically-shaped colloidal particles with appropriately tuned potential.

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supporting

confidence: 58%

“…This pair potential represents a modification of an earlier reported pair potential [15] that was found to produce the smectic-B crystal. The main difference between these two potentials is that in present one the long-range repulsion branch is extended to a significantly larger distance.…”

Section: Fig 6: Pair Potentialmentioning

confidence: 67%

A smectic dodecagonal quasicrystal

et al. 2016

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“…It has to be mentioned that this pair potential represents a modification of an earlier reported potential 20 which was found to produce the smectic-B crystal. The main difference between the two potentials is that in the present one the long-range repulsive part extends to a significantly larger distance.…”

Section: Model and Simulationmentioning

confidence: 78%

Formation of a columnar liquid crystal in a simple one-component system of particles

et al. 2015

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We report a molecular dynamics simulation demonstrating that a columnar liquid crystal, commonly formed by disc-shaped molecules, can be formed by identical particles interacting via a spherically symmetric potential. Upon isochoric cooling from a low-density isotropic liquid state the simulated system underwent a weak first order phase transition which produced a liquid crystal phase composed of parallel particle columns arranged in a hexagonal pattern in the plane perpendicular to the column axis. The particles within columns formed a liquid structure and demonstrated a significant intracolumn diffusion. Further cooling resulted in another first-order transition whereby the column structure became periodically ordered in three dimensions transforming the liquid-crystal phase into a crystal. This result is the first observation of a columnar liquid crystal formation in a simple one-component system of particles. Its conceptual significance is in that it demonstrated that liquid crystals that have so far only been produced in systems of anisometric molecules can also be formed by mesoscopic soft-matter and colloidal systems of spherical particles with appropriately tuned interatomic potential.

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“…3). Despite this tool lacks of novelty, it has been implemented in PASYVAT out of necessity [10]. This function can be toggled only via key-press events while the render window is focused.…”

Section: Structure Slicing Functionmentioning

confidence: 99%

Visual, user-interactive generation of bond networks in 3D particle configurations

Metere,

Oppelstrup,

Dzugutov

et al. 2015

Preprint

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We present a new program able to perform visual structural analysis on 3D particle systems called PASYVAT (PArticle SYstem Visual Analysis Tool). More specifically, it can select multiple interparticle distance ranges from a radial distribution function (RDF) plot and display them in 3D as bonds between the particles falling within the selected distance range, thus generating a network of bonds. This software can be used with any data set representing a system of points or other objects having a welldefined center of mass or geometric center in 3D space. In this article we describe the program and its internal structure, with emphasis on its applicability in the study of certain particle configurations, obtained from classical molecular dynamics simulation in condensed matter physics.

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Formation of the smectic-Bcrystal from a simple monatomic liquid

Cited by 5 publications

References 26 publications

A smectic dodecagonal quasicrystal

A smectic dodecagonal quasicrystal

Formation of a columnar liquid crystal in a simple one-component system of particles

Visual, user-interactive generation of bond networks in 3D particle configurations

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