| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Investigating the “Stiffness of Water” in Ti3C2Tx MXenes via Modulated Nano Indentation |
| Author(s) |
Remi Dingreville, Ryan Khan, Frank Delrio |
| On-Site Speaker (Planned) |
Remi Dingreville |
| Abstract Scope |
Modulated Nanoindentation (MoNI) is a novel technique, the only of its kind that can directly probe the transverse mechanics of atomically thin materials. With sub-Angstrom resolution in indentation depth and sub-nN resolution in force, MoNI can measure the mechanical response of any thin film/2D material without the added hindrance of feeling the underlying substrate, allowing insight into how ultra-thin materials would operate in 2D-based devices.
We employ MoNI to measure the multi-layer response of Ti3C2Tx MXenes ranging from 1 to 5 individual layers. With complimentary molecular dynamics simulations and XPS measurements, we characterize the impact of individual and mixed surface termination groups as well as vacancy defects on the overall stiffness response. Furthermore, by accounting for every factor in the total response, we extract the effective stiffness of the confined interlayer water between MXene layers. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nanotechnology, Mechanical Properties |