Patent ID: 8900467

Claim:
A method using a block copolymer (BCP) for making a chemical contrast pattern on a substrate comprising: providing a substrate; depositing on the substrate a sublayer for the BCP; patterning the sublayer; forming on the patterned sublayer a BCP, the BCP material being directed by the patterned sublayer to self-assemble into first and second components of the BCP; removing the second component and underlying sublayer to expose regions of the underlying substrate, leaving the first component on the substrate; depositing on the first component and the exposed substrate regions a surface modification polymer having functional end groups; removing portions of the surface modification polymer not bound to the substrate; placing the substrate with the bound surface modification polymer and first component in an atomic layer deposition (ALD) chamber; introducing into the ALD chamber a first precursor for an inorganic material, said first precursor being non-reactive with the surface modification polymer and reactive with the first component; and introducing into the ALD chamber a second precursor for said inorganic material, said second precursor being non-reactive with the surface modification polymer and reactive with said first precursor to form said inorganic material in the first component, thereby forming on the substrate a chemical contrast pattern of surface modification polymer and inorganic material.