Patent ID: 8142700

Claim:
A method of forming a template structure comprising polymer micro- and nanofiber arrays, comprising the steps performed in the following sequence: forming a template backing layer of photo- or x-ray sensitive polymer material on a substrate; forming a template layer of photo- or x-ray sensitive polymer material on the template backing layer, wherein the template layer is a first dry adhesive layer; exposing the template layer to a predetermined pattern of energy; removing a portion of the template layer related to the predetermined pattern of energy, and leaving the template structure formed from the photo- or x-ray sensitive polymer material and connected to the substrate via the template backing layer, wherein the template structure is a dry adhesive structure comprising polymer micro- and nanofiber arrays; forming a layer of photo- or x-ray sensitive polymer material on the dry adhesive structure; exposing the layer of photo- or x-ray sensitive polymer material on the dry adhesive structure to a predetermined pattern of energy; and removing a portion of the layer of photo- or x-ray sensitive polymer material on the dry adhesive structure related to the predetermined pattern of energy, and leaving a second dry adhesive structure formed from the photo- or x-ray sensitive polymer material and connected to the dry adhesive structure comprising polymer micro- and nanofiber arrays.