### 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 language | English |
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Article number | P09015 |

Journal | Journal of Statistical Mechanics: Theory and Experiment |

Issue number | 9 |

DOIs | |

Publication status | Published - Sep 1 2007 |

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### Keywords

- Cluster aggregation (experiment)
- Fractal growth (experiment)

### ASJC Scopus subject areas

- Statistics and Probability
- Statistical and Nonlinear Physics

### Cite this

*Journal of Statistical Mechanics: Theory and Experiment*, (9), [P09015]. https://doi.org/10.1088/1742-5468/2007/09/P09015

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

Research output: Contribution to journal › Article

*Journal of Statistical Mechanics: Theory and Experiment*, no. 9, P09015. https://doi.org/10.1088/1742-5468/2007/09/P09015

}

TY - JOUR

T1 - Structure and kinetics of heteroaggregation in binary dipolar monolayers

AU - Varga, Imre

AU - Yoshioka, Naoki

AU - Kun, Ferenc

AU - Gang, Sun

AU - Ito, Nobuyasu

PY - 2007/9/1

Y1 - 2007/9/1

N2 - 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.

AB - 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.

KW - Cluster aggregation (experiment)

KW - Fractal growth (experiment)

UR - http://www.scopus.com/inward/record.url?scp=36148969618&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36148969618&partnerID=8YFLogxK

U2 - 10.1088/1742-5468/2007/09/P09015

DO - 10.1088/1742-5468/2007/09/P09015

M3 - Article

JO - Journal of Statistical Mechanics: Theory and Experiment

JF - Journal of Statistical Mechanics: Theory and Experiment

SN - 1742-5468

IS - 9

M1 - P09015

ER -