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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.

SUBMITTER: Chapman CA

PROVIDER: S-EPMC4587536 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature

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Substrate Topography Guides Pore Morphology Evolution in Nanoporous Gold Thin Films.

Chapman Christopher A R CA Daggumati Pallavi P Gott Shannon C SC Rao Masaru P MP Seker Erkin E

Scripta materialia 20160101

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 determ ...[more]

PMID: 26435685

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