About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Deformation Mechanisms, Microstructure Evolution, and Mechanical Properties of Nanoscale Materials
|
Presentation Title |
G-6: Influence of Substrate Topography and Mechanical Compliance on the Morphology of Nanoporous Gold Thin Films |
Author(s) |
Sadi Md Shahriar, Noah Goshi, Conner Winkeljohn, Jeremy Mason, Erkin Seker |
On-Site Speaker (Planned) |
Sadi Md Shahriar |
Abstract Scope |
Nanoporous gold (np-Au) has found use in applications ranging from catalysis to biosensing, but its desirable performance relies on the tuneability of its morphology. While morphology evolution of bulk np-Au has been widely studied, knowledge about its thin film form is limited, where topography and mechanical compliance of the thin film substrate likely plays a critical role in np-Au morphology. In order to study these substrate effects, silicon and silicone substrates with varying ridge geometries were sputter-coated with sub-micron-thick gold-silver alloys followed by dealloying to obtain np-Au thin films. The pore morphology and surface cracks were characterized as functions of substrate topography and compliance. Overall, both topography and compliance led to significant variations in grain structure, pore morphology, and cracks, emphasizing the importance of accounting for substrate effects when fabricating np-Au thin films. We expect these results to assist in integrating np-Au thin films in miniaturized devices and flexible electronics. |
Proceedings Inclusion? |
Planned: |
Keywords |
Thin Films and Interfaces, Mechanical Properties, Nanotechnology |