About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Deformation Mechanisms, Microstructure Evolution, and Mechanical Properties of Nanoscale Materials
|
Presentation Title |
Size and Shape Effects on the Strength of Platinum Nanoparticles |
Author(s) |
Jonathan Zimmerman, Anuj Bisht, Yuri Mishin, Eugen Rabkin |
On-Site Speaker (Planned) |
Jonathan Zimmerman |
Abstract Scope |
Mechanical properties of nanoparticles have received a great deal of attention due to growing interest in their applications. We have studied the compressive strength of Pt nanoparticles of widely varying shapes and sizes produced by the solid-state dewetting method and report a maximum compressive strength of 9.5 GPa. This strength approached the lower limit of the theoretical strength of bulk Pt, yet in relative terms it is lower than the strength of particle of other FCC metals - Au and Ni, fabricated using the same method. We report a clear size effect on strength – as reported in previous research – along with a novel shape effect. We formulated a combined power law describing the dependence of particles strength on their size and shape in terms of geometrical parameters which are easily accessible experimentally. Our experimental results are in a good agreement with previous computational studies on Pt strength. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, Mechanical Properties, Nanotechnology |