Stable addressable self-assembled dot arrays with an areal density of 1.3-3.8 teradot/in.(2) and a resolution enhancement of at least a factor of 4 are achieved by combining block copolymers (BCPs) in the strong segregation limit, which have spherical microdomains (see inset), with chemically nanopatterned surfaces. The SEM image at the edge of a BCP thin film shows a dense BCP array (see figure, bottom) and the nanopatterned substrate (top)