| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Tuning Mechanical and Electronic Properties of Bilayer Graphene by Strain Engineering |
| Author(s) |
Soumya Sourav Sarangi, Gary J Cheng |
| On-Site Speaker (Planned) |
Soumya Sourav Sarangi |
| Abstract Scope |
Bilayer graphene (BLG) structures have recently gained popularity due to their exceptional optical and electronic properties. However, the absence of an energy band gap greatly reduces its applicability as a semiconductor material. External electric field and chemical doping have been used to tune the band gap of BLG, but there is a need for the development of practical methods for opening the band gap through the application of mechanical stresses. In the current work, high strain rate deformation of BLG is carried out by utilizing GPa-level laser shocking. Laser straining is performed on BLG placed over carefully fabricated Silicon molds containing trenches with different width-to-depth ratios. High-resolution microscopy and Raman spectroscopy reveal alterations in the atomic and electronic structure of BLG. Atomistic simulations are further employed to predict the opening of the electronic band gap and to understand the defect evolution in BLG as a function of induced strain. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Modeling and Simulation, Nanotechnology |