About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Deformation Mechanisms, Microstructure Evolution, and Mechanical Properties of Nanoscale Materials
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Presentation Title |
Direct Measurement of Adhesion for Noble-metal Nanoparticles Using In Situ Transmission Electron Microscopy |
Author(s) |
Andrew J. Baker, Sai Bharadwaj Vishnubhotla, Sanjana Karpe, Yahui Yang, Goetz Veser, Tevis Jacobs |
On-Site Speaker (Planned) |
Tevis Jacobs |
Abstract Scope |
A key aspect of metal nanoparticle technologies is how strongly the nanoparticles adhere to their supports. This adhesion controls the efficiency and lifetime of many nanoparticle applications. In the present work, in situ adhesion tests were performed inside of a transmission electron microscope (TEM) on nanoparticles of gold and platinum with different supporting oxides. The advantage of this technique is the combination of Angstrom-scale characterization of particle size, shape, and structure coupled with nanonewton-scale measurements of adhesive forces. Together, by measuring adhesive force and contact area, this technique can measure the adhesive strength on a particle-by-particle basis. First, the accuracy of the technique was assessed based on comparison to prior approaches; then the adhesive strength was measured for new material combinations that had not previously been investigated. Finally, the advantages of this technique were utilized to study structure-properties relationships, including the effect of particle shape and size on adhesion. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nanotechnology, Other, Other |