Laser-assisted graphene layer exfoliation from graphite slab
- verfasst von
- 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.
- Organisationseinheit(en)
-
Institut für Photonik
- Externe Organisation(en)
-
Indian Institute of Science Bangalore
Synchrotron SOLEIL
Bauhaus-Universität Weimar
- Typ
- Artikel
- Journal
- Molecular simulation
- Band
- 47
- Seiten
- 1540-1548
- Anzahl der Seiten
- 9
- ISSN
- 0892-7022
- Publikationsdatum
- 12.12.2021
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Physik der kondensierten Materie, Information systems, Allgemeine chemische Verfahrenstechnik, Allgemeine Chemie, Allgemeine Materialwissenschaften, Modellierung und Simulation
- Ziele für nachhaltige Entwicklung
- SDG 7 – Erschwingliche und saubere Energie
- Elektronische Version(en)
-
https://doi.org/10.48550/arXiv.2011.13690 (Zugang:
Offen)
https://doi.org/10.1080/08927022.2021.1991920 (Zugang: Geschlossen)
