Laser-assisted graphene layer exfoliation from graphite slab
- authored by
- Brahmanandam Javvaji, Ramakrishna Vasireddi, Xiaoying Zhuang, Debiprosad Roy Mahapatra, Timon Rabczuk
- Abstract
Synthesis of graphene with reduced use of chemical reagents is essential for manufacturing scale-up and to control its structure and properties. In this paper, we report the mechanism for exfoliating graphene from graphite slabs using laser impulse. We set up a molecular dynamics model that accounts for the charge-mediated inter-atomic potential along with the forces from electromagnetic fields of a laser pulse. The role of different laser fluences on the exfoliation process of graphene quantified in terms of the interlayer energy transition, inter-layer displacement jump, and thermal shock propagation in graphene-graphite system. The simulation results confirm the exfoliation of a single layer graphene sheet for the laser power ranging from (Formula presented.) to (Formula presented.) J/nm
2. With an increase of laser fluence from (Formula presented.) to (Formula presented.) J/nm
2, there is an increase in the graphene yield via the layer-after-layer exfoliation. The bridging bond dynamics between the successive graphene layers govern the exfoliation of the second layer. The results indicate promises for producing chemical-free graphene on a large scale for industrial applications.
- Organisation(s)
-
Institute of Photonics
- External Organisation(s)
-
Indian Institute of Science Bangalore
Synchrotron SOLEIL
Bauhaus-Universität Weimar
- Type
- Article
- Journal
- Molecular simulation
- Volume
- 47
- Pages
- 1540-1548
- No. of pages
- 9
- ISSN
- 0892-7022
- Publication date
- 12.12.2021
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Condensed Matter Physics, Information Systems, General Chemical Engineering, General Chemistry, General Materials Science, Modelling and Simulation
- Sustainable Development Goals
- SDG 7 - Affordable and Clean Energy
- Electronic version(s)
-
https://doi.org/10.48550/arXiv.2011.13690 (Access:
Open)
https://doi.org/10.1080/08927022.2021.1991920 (Access: Closed)
