| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
The Transverse Stiffness of Ti3C2Tx MXene and the Role of Inter-layer Water using Sub-angstrom Resolution Nanoindentation |
| Author(s) |
Ryan Khan, Daniel Vizoso, Mikhail Shekhirev, Frank DelRio, Yuri Gogotsi, Remi Dingreville |
| On-Site Speaker (Planned) |
Ryan Khan |
| Abstract Scope |
MXenes are a promising category of 2D materials allowing versatility in their structure and surface chemistry towards broad applicability in many different areas. However the transverse stiffness, important in many potential applications, has never been directly measured due to experimental challenges. The novel technique, Modulated Nanoindentation (MoNI) with Angstrom resolution is sensitive enough to measure the transverse modulus of atomically thin materials on any underlying substrate, without erroneous contributions from the substrate.
Using MoNI we report the first the transverse stiffness measurements of Ti3C2Tx MXenes varying the number of layers displaying resolution sensitive enough to distinguish differences between single additional layers. XPS and XRD are employed to describe the surface termination and the amount of water present below the first layer and between subsequent layers. With complimentary Molecular Dynamics simulations of different terminated cases, our experiments display the key role of inter-layer water in the stiffness response at this scale. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Mechanical Properties, Other |