Structure and kinetics of heteroaggregation in binary dipolar monolayers

Imre Varga, Naoki Yoshioka, Ferenc Kun, Sun Gang, Nobuyasu Ito

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We present an experimental study of the kinetic and structural aspects of heteroaggregation in binary dipolar monolayers. Particles of the two components of the system have oppositely oriented dipole moments constrained to be perpendicular to the plane of motion. We show experimentally that growing clusters have chain-like morphology with a crossover to branched structures, whose fractal dimension is equal to that of self-avoiding random walks and reaction-limited cluster-cluster aggregation, respectively. The average cluster size and number of clusters have a power-law behavior as a function of time, in which the dynamic exponents depend on the concentration. Our experiments revealed a clear discrimination between clusters of an even and odd number of particles, i.e. the concentration of even-sized clusters has a much faster decay with time than that of the odd ones; furthermore, at a given time the concentration of clusters shows even-odd oscillations.

Original languageEnglish
Article numberP09015
JournalJournal of Statistical Mechanics: Theory and Experiment
Issue number9
DOIs
Publication statusPublished - Sep 1 2007

Fingerprint

Kinetics
Binary
kinetics
Odd
Even number
Odd number
Number of Clusters
Fractal Dimension
Perpendicular
Dipole
Discrimination
Crossover
random walk
Experimental Study
Random walk
Aggregation
Power Law
discrimination
Exponent
fractals

Keywords

  • Cluster aggregation (experiment)
  • Fractal growth (experiment)

ASJC Scopus subject areas

  • Statistics and Probability
  • Statistical and Nonlinear Physics

Cite this

Structure and kinetics of heteroaggregation in binary dipolar monolayers. / Varga, Imre; Yoshioka, Naoki; Kun, Ferenc; Gang, Sun; Ito, Nobuyasu.

In: Journal of Statistical Mechanics: Theory and Experiment, No. 9, P09015, 01.09.2007.

Research output: Contribution to journalArticle

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