FIG. 9.

The ratio of mean extension $〈X〉$ to contour length L of the chain as a function of channel size H for four different chain sizes. The solid line is Eq. (26) for the de Gennes scaling for the extension of a chain in a nanochannel. The blue symbols are weak confinement, and the black symbols are those chains that are long enough to be in the de Gennes regime.