| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
|
| Presentation Title |
In situ Investigations into the Adhesion and Compression of Catalyst-relevant Metal Nanoparticles |
| Author(s) |
Tevis D.B. Jacobs, Ruikang Ding, Andrew Baker, Ingrid Padilla Espinosa, Soodabeh Azadehranjbar, Ashlie Martini |
| On-Site Speaker (Planned) |
Tevis D.B. Jacobs |
| Abstract Scope |
We have used in situ manipulation of metal nanoparticles, coupled with atomistic simulations of the same materials, to investigate the performance of catalyst-relevant metal nanoparticles. First, we used in situ adhesion testing, and matched simulations, on nanoparticles composed of various metals in contact with a variety of oxide substrates to understand the physics of adhesion. The results showed that, instead of being governed by traditional fracture mechanics, particle adhesion is more closely described by the adhesive strength of an interface failing in tension. We could then relate this adhesive strength to material properties of the system. Second, we used matched experiments and simulations of nanoparticle compression to show how the elastic stiffness and compression strength of small metal nanoparticles varies with shape and size. Taken together, these investigations reveal the fundamental science that will guide the creation of stronger and more stable nanoparticle catalysts. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nanotechnology, Mechanical Properties, Energy Conversion and Storage |