作者: Lahcen Assoud , René Messina , Hartmut Löwen
DOI: 10.1080/00268976.2011.562871
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摘要: Crystallization near structured substrates is explored by extensive Brownian dynamics computer simulations of two-dimensional equimolar binary colloidal suspensions. The particles are interacting via repulsive dipole–dipole forces. two species have different (big and small) dipole moments which tunable an external magnetic field. A quench realized a sudden drastic increase the field formally corresponds to zero temperature. walls modelled fixed on alternating square lattice cut along (10) direction. Two situations studied compared where outermost layer either consists big or small dipolar particles. Both these structures favour local crystallites pick up symmetry substrate. After equilibrium state coincides exactly with that imposed wall. relaxation behaviour ...