Patent ID: 11674947

Abstract:
Nanopore structures are provided. In one aspect, a nanopore structure includes: an oxide shell surrounding a nanopore, wherein openings on both ends of the nanopore have a diameter D1, and a center of the nanopore has a diameter D2, wherein D1>D2. In another aspect, the nanopore structure includes: a first film disposed on a substrate; a second film disposed on the first film; at least one pore extending through the first film and the second film; a dielectric material disposed in the at least one pore; and a nanopore at a center of the dielectric material in the at least one pore, wherein a top opening to the nanopore has a first diameter d1, and a bottom opening to the nanopore has a second diameter d2, wherein d2>d1. Methods of forming the nanopore structures are also provided.