Abstract
We present Monte Carlo simulations of dense colloidal suspensions pulled into grafted polymer layers by external forces. The size–selectivity of the tendency of colloidal particles to traverse grafting layers is discussed. At weak external fields, large–enough colloids cannot penetrate the brush and form a liquid layer on top of it, while under the influence of sufficiently strong forces, a collective instability occurs and ordered structures spanning the brush layer emerge. The formation of such structures is a slow process and we demonstrate that the particles’ kinetics can have a decisive role in their collective ordering.
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