Methods of making nanoscopic tunnels are provided. An article defining a nanoscopic tunnel is made by providing a substrate, providing a tunnel template of sacrificial material on the substrate, and covering the tunnel template with a material. The sacrificial material is removed from the article, forming...http://www.google.es/patents/US20040077107?utm_source=gb-gplus-sharePatente US20040077107 - Method of making nanoscopic tunnel