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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Self-organizing Nano-architectured Materials
Presentation Title H-15: In-situ Observation of Ligament Coarsening in Nanoporous Gold
Author(s) Kerry Baker, T John Balk
On-Site Speaker (Planned) Kerry Baker
Abstract Scope Nanoporous gold has a high surface area to volume structure that, combined with its material properties, makes it attractive for catalytic, sensing, and capacitance applications. The size of the ligament structure influences the mechanical behavior of nanoporous gold, as an increase in ligament size decreases the strength of the networked structure. Typically, a smaller ligament size is preferred due to the high surface area to volume ratio and enhanced mechanical properties; however, the structure is not thermally stabilized at elevated temperatures. Thin film nanoporous gold films were coarsened in a scanning electron microscope, with in-situ observations during the annealing process. It was found that ligament coarsening kinetics agreed with a surface diffusion mechanism, as expected. However, electron beam imaging was observed to influence the coarsening behavior significantly. These findings will be discussed in relation to electron beam effects on gold ligament surfaces and diffusion.
Proceedings Inclusion? Undecided
Keywords Other, Other, Other

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Characterization of Particle Impact and Pore Formation in Directed Energy Deposition via In-situ, Highspeed Imaging and Micro X-ray Computed Tomography
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Coupled Coarsening and Dissolution Kinetics during Liquid Metal Dealloying
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Grain Boundary Effects in Liquid Metal Dealloying: A Phase Field Study
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H-14: Characterization of Dealloyed Gradient Nanoporous Foams
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H-16: Kinetics of Peritectic Melting
H-19: Unveiling Phase Transition in Solid-state Dealloyed Thin Films Using Autonomous Synchrotron X-ray Characterization
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Magnetic Nanopillars by Self-assembled Block Copolymer Templating
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Nanoporous Gold: From an Ancient Material to Biomedical Devices
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