Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Formation of a Columnar Liquid Crystal in a Simple One-Component System of Particles
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).ORCID iD: 0000-0003-0237-7250
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
2015 (English)In: Soft Matter, ISSN 1744-683X, E-ISSN 1744-6848, Vol. 11, no 23, 4606-4613 p.Article in journal (Refereed) Published
Abstract [en]

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 performed 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 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.

Place, publisher, year, edition, pages
2015. Vol. 11, no 23, 4606-4613 p.
Keyword [en]
columnar phase, liquid crystal, soft matter, molecular dynamics
National Category
Condensed Matter Physics
Research subject
Physical Chemistry
Identifiers
URN: urn:nbn:se:su:diva-115847DOI: 10.1039/c5sm00570aISI: 000355735900007OAI: oai:DiVA.org:su-115847DiVA: diva2:800393
Available from: 2015-04-03 Created: 2015-04-03 Last updated: 2017-12-04Bibliographically approved
In thesis
1. On the nature of self-assembly in low-density condensed matter: A classical molecular dynamics approach
Open this publication in new window or tab >>On the nature of self-assembly in low-density condensed matter: A classical molecular dynamics approach
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The study of the physics of self-assembly in low-density condensed matter is an extremely interesting, mostly unexplored field of scientific research. The contribution reported in this thesis explains how this problem can be addressed using molecular dynamics simulation of 3D systems composed by simple, identical particles, interacting via a spherically symmetric pair potential, which belongs to the class of Dzugutov potentials. Such approach resulted in four, self-assembled archetypal structures, which are reported in the included papers I, II, III, IV. In order to produce the reported results, a major effort of software development has been done by the author, both in the simulation and the analysis programs used. This thesis will start with a brief introduction to the field, highlighting the important aspects needed to have a more complete, general understanding of the reported scientific results. Some conclusions will be drawn, together with some possible future endeavors.

Place, publisher, year, edition, pages
Stockholm: Department of Materials and Environmental Chemistry (MMK), Stockholm University, 2015. 96 p.
National Category
Condensed Matter Physics Physical Chemistry
Research subject
Physical Chemistry
Identifiers
urn:nbn:se:su:diva-115849 (URN)978-91-7649-149-2 (ISBN)
Public defence
2015-05-12, Magnélisalen, Kemiska övningslaboratoriet, Svante Arrhenius väg 16 B, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 3: Submitted. Paper 4: Submitted. Paper 5: Submitted.

Available from: 2015-04-20 Created: 2015-04-03 Last updated: 2015-04-23Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textarXiv:1406.7804

Search in DiVA

By author/editor
Metere, AlfredoSarman, Sten
By organisation
Department of Materials and Environmental Chemistry (MMK)
In the same journal
Soft Matter
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 48 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf