title: Mesoscale metallic pyramids with nanoscale tips.
abstract: We report a simple procedure that can generate free-standing mesoscale metallic pyramids composed of one or more materials and having nanoscale tips (radii of curvature of less than 2 nm). Mesoscale holes (100-300 nm) in a chromium film are used as an etch mask to fabricate pyramidal pits and then as a deposition mask to form the metallic pyramids. We have fabricated two- and three-layered pyramids with control over their materials and chemical functionality.
authors.affiliation: Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA.
authors.forename: Joel
authors.initials: J
authors.lastname: Henzie
authors.forename: Eun-Soo
authors.initials: ES
authors.lastname: Kwak
authors.forename: Teri W
authors.initials: TW
authors.lastname: Odom
mesh_terms: D003460:Crystallization / Q000379:methods*; D008422:Materials Testing; D008670:Metals / Q000032:analysis / Q000737:chemistry*; D008968:Molecular Conformation; D049329:Nanostructures / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D016062:Porosity
chemical_list: D008670:Metals