Abstract
The conformation of macromolecular chains in dilute or semi-dilute solution in a good solvent, confined into a finite slit with thickness D1 and width D2 is examined The conformational evolution (sphere, pancake, cigar with 3d or 2d local correlations) is studied as a function of D1/D2 in the (x, z)-plane where x = R3/D 1, z = (C/C*)3/4, R3 is the radius of gyration and C* the semi-dilution limit of unconfined chains