title: Substrate Topography Guides Pore Morphology Evolution in Nanoporous Gold Thin Films.
abstract: This paper illustrates the effect of substrate topography on morphology evolution in nanoporous gold (np-Au) thin films. One micron-high silicon ridges with widths varying between 150 nm to 50 µm were fabricated and coated with 500 nm-thick np-Au films obtained by dealloying sputtered gold-silver alloy films. Analysis of scanning electron micrographs of the np-Au films following dealloying and thermal annealing revealed two distinct regimes where the ratio of film thickness to ridge width determines the morphological evolution of np-Au films.
authors.affiliation: Department of Biomedical Engineering, University of California - Davis, Davis, CA 95616, USA.
authors.forename: Christopher A R
authors.initials: CA
authors.lastname: Chapman
authors.affiliation: Electrical & Computer Engineering, University of California - Davis, Davis, CA 95616, USA.
authors.forename: Pallavi
authors.initials: P
authors.lastname: Daggumati
authors.affiliation: Department of Mechanical Engineering, University of California - Riverside, Riverside, CA 92521, USA.
authors.forename: Shannon C
authors.initials: SC
authors.lastname: Gott
authors.affiliation: Department of Mechanical Engineering, University of California - Riverside, Riverside, CA 92521, USA ; Department of Bioengineering, University of California - Riverside, Riverside, CA 92521, USA ; Materials Science and Engineering Program, University of California - Riverside, Riverside, CA 92521, USA.
authors.forename: Masaru P
authors.initials: MP
authors.lastname: Rao
authors.affiliation: Electrical & Computer Engineering, University of California - Davis, Davis, CA 95616, USA.
authors.forename: Erkin
authors.initials: E
authors.lastname: Seker
keywords: annealing; dealloying; fracture; microfabrication; nanoporous material