Attraction-limited cluster-cluster aggregation of Ising dipolar particles.
The attraction-limited cluster-cluster aggregation of two-dimensional Ising dipolar particles with or without particle-size dispersity is studied. The fast decrease of the number of even-sized clusters for relatively smaller clusters is observed. The threshold concentration is also determined, under which the dynamics of aggregation is explained using the well-known dynamic scaling theory of Vicsek and Family. Above the threshold concentration, the dynamics depends on particle-size dispersity. Furthermore, it is suggested that, even in the dilute limit, the dynamic exponents are affected by the screening of the surrounding clusters on collision between two clusters.
Department of Applied Physics, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan. yoshioka@acolyte.t.u-tokyo.ac.jp
Naoki
N
Yoshioka
Imre
I
Varga
Ferenc
F
Kun
Satoshi
S
Yukawa
Nobuyasu
N
Ito