About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Behavior at the Nanoscale VI
|
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) |
Andrew J. Baker |
Abstract Scope |
A critical aspect of metal nanoparticle technologies is how strongly the nanoparticles adhere to their substrates. This adhesion is directly related to the efficiency and lifetime of many nanoparticle applications. In the present work, we performed in situ adhesion tests inside of a transmission electron microscope (TEM) on nanoparticles of gold and platinum. This approach combines Angstrom-scale characterization of particle size, shape, and structure together with nanonewton-scale measurements of adhesive forces. Together, these capabilities allow the determination of adhesion energy on a particle-by-particle basis. First, the accuracy of the technique was assessed based on comparison to prior approaches; then the adhesion energy was measured for new material combinations that had not previously been investigated. Finally, this flexible test platform was applied to study structure-properties relationships, including the effect of particle shape and size on adhesion. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nanotechnology, Characterization, Other |