Abstract
Improvements to nanoindentation techniques have enabled faster data acquisition and expanded data interpretation methods. Methods such as instrumented high-speed nanoindentation facilitate local mapping of nanomechanical properties. To create accurate maps, indent spacing should prevent previous indents from influencing subsequent indents. However, indents must be close enough to understand local property variations. The optimal ratio of indent spacing to indent depth (s/hc) is well established for dense materials, but not for materials with nanoscale porosity. Nanoporous gold was tested at multiple s/hc ratios, to identify optimal spacing for nanoporous structures. These are shown to have the same requirements as dense materials. Graphical abstract: (Figure presented.).
| Original language | English |
|---|---|
| Pages (from-to) | 90-95 |
| Number of pages | 6 |
| Journal | MRS Communications |
| Volume | 14 |
| Issue number | 1 |
| DOIs | |
| State | Published - Feb 2024 |
Bibliographical note
Publisher Copyright:© The Author(s), under exclusive licence to The Materials Research Society 2023.
Funding
The authors did not receive support from any organization for the submitted work. The corresponding author (Thomas John Balk) provided financial support for personnel and electron microscopy charges, using unrestricted funds. The University of Kentucky Electron Microscopy Center receives partial support (for general operations) from a National Science Foundation grant, and that has been noted in the acknowledgements section. This work was performed in part at the U.K. Electron Microscopy Center, a member of the National Nanotechnology Coordinated Infrastructure (NNCI), which is supported by the National Science Foundation (NNCI-2025075).
| Funders | Funder number |
|---|---|
| National Science Foundation Arctic Social Science Program | NNCI-2025075 |
Keywords
- Au
- Cellular (material form)
- Nanoindentation
- Nanostructure
- Thin film
ASJC Scopus subject areas
- General Materials Science