In this paper, we investigate theoretically the structure of an ultrathin l
ayer of diblock copolymers. It is assumed that one of the blocks is strongl
y adsorbed on a planar surface while the nonadsorbed block aggregates with
the formation of surface micelles. We adopt a simple model in which the ads
orbed blocks of the copolymers are assumed: to form a two-dimensional melt
while the surface micelles of the second blocks are approximated by parts o
f a sphere. The equilibrium structure of the micelles, which is governed by
the interplay of the surface energy which favours the aggregation process
and the energy of stretching of the adsorbed blocks is analyzed. It is show
n that the number of the chains in one micelle, the radius and the height o
f the micelles scale with the length N-B of a nonadsorbed block as N-B(1/2)
.