Patent ID: 7520951

Claim:
A method of transferring nanoparticles to a surface comprising: positioning a take-up roll, a carrier roll and a target roll in working communication with each other, wherein: the take-up roll comprises a perimeter surface including binding sites that comprise one of openings and binding site adhesive material and are positioned to form a desired pattern; the carrier roll comprises a carrier surface including a carrier adhesive material that exerts a higher adhesive force than the binding sites; and a target substrate translates about the target roll and includes a target substrate adhesive material that exerts a higher adhesive force than the carrier adhesive material, positioning the perimeter surface partially in a colloidal solution containing nanoparticles, and rotating the perimeter surface through the colloidal solution such that nanoparticles are captured by the binding sites; removing liquid from the captured nanoparticles and rotating the take-up roll such that the captured nanoparticles contact the carrier surface; removing the captured nanoparticles from the perimeter surface and transferring the nanoparticles to the carrier surface with the carrier adhesive material; rotating the carrier roll such that the transferred nanoparticles contact the target substrate; and removing the transferred nanoparticles from the carrier surface and transferring the transferred nanoparticles to the target substrate with the target substrate material.