Molecular crystalline states in dipolar monolayers

Imre Varga, F. Kun, Nobuyasu Ito, Weijia Wen

Research output: Contribution to journalArticle

Abstract

We show that in binary dipolar monolayers (BDM) crystalline states, analogous to colloidal molecular crystals observed in colloids interacting with a periodic array of traps, can emerge without the application of an underlying substrate. The n-mers of BDMs are bounded configurations of particles with oppositely oriented permanent dipoles. Brownian dynamics simulations revealed that at finite temperatures the molecular crystalline structures are unstable states of BDMs whose lifetime is a decreasing function of both the temperature and the system size. For trimers there exists a critical temperature T c above which thermal noise driven aggregation occurs, resulting in clusters of square lattice structure.

Original languageEnglish
Article numberP11014
JournalJournal of Statistical Mechanics: Theory and Experiment
Volume2007
Issue number11
DOIs
Publication statusPublished - Nov 1 2007

Fingerprint

Brownian Dynamics
Lattice Structure
Colloids
Finite Temperature
Critical Temperature
Trap
Square Lattice
Dynamic Simulation
Dipole
Lifetime
Aggregation
Crystal
Unstable
Substrate
Binary
Configuration
thermal noise
trimers
colloids
critical temperature

Keywords

  • Cluster aggregation (theory)
  • Mixtures and polydisperse fluids
  • Monodisperse fluids

ASJC Scopus subject areas

  • Statistics and Probability
  • Statistical and Nonlinear Physics

Cite this

Molecular crystalline states in dipolar monolayers. / Varga, Imre; Kun, F.; Ito, Nobuyasu; Wen, Weijia.

In: Journal of Statistical Mechanics: Theory and Experiment, Vol. 2007, No. 11, P11014, 01.11.2007.

Research output: Contribution to journalArticle

Varga, Imre ; Kun, F. ; Ito, Nobuyasu ; Wen, Weijia. / Molecular crystalline states in dipolar monolayers. In: Journal of Statistical Mechanics: Theory and Experiment. 2007 ; Vol. 2007, No. 11.
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