title: Nanopore fabrication by heating Au particles on ceramic substrates.
abstract: We found that gold nanoparticles, when heated to close to their melting point on substrates of amorphous SiO2 or amorphous Si3N4, move perpendicularly into the substrate. Dependent on applied temperatures, particles can become buried or leave nanopores of extreme aspect ratio (diameter ≅ 25 nm, length up to 800 nm). The process can be understood as driven by gold evaporation and controlled by capillary forces and can be controlled by temperature programming and substrate choice.
authors.affiliation: MESA+ Institute for Nanotechnology, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente , Drienerlolaan 5, 7522 NB Enschede, The Netherlands.
authors.forename: Lennart J
authors.initials: LJ
authors.lastname: de Vreede
authors.forename: Albert
authors.initials: A
authors.lastname: van den Berg
authors.forename: Jan C T
authors.initials: JC
authors.lastname: Eijkel
keywords: Nanopore; dewetting; gold; silicon nitride; silicon oxide; surface energy