Related Experiment Video
Updated: Jun 21, 2026

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
Published on: July 24, 2015
An Approach to the Improvement of Graphene Production by Ultrasonic-Bath Treatment
Bagila A Baitimbetova1,2, Danil W Boukhvalov3,4, Kostya A Mit'3
1Department of Materials Science, Nanotechnology and Engineering Physics, Satbayev University, Satbayeva Str. 22, Almaty 050013, Kazakhstan.
Abstract:
In this study, we report the synthesis of few-layer graphene via ultrasonic treatment of a graphite-benzene solution at room temperature. Raman spectroscopy revealed a significant reduction in the intensity ratio of the G and 2D peaks for samples subjected to 20 min of treatment, indicating a decrease in defect density and oxidation. Prolonged treatment times led to fragmentation of the graphene sheets, which facilitated restacking, as evidenced by Raman spectroscopy and microscopy. FTIR analysis confirmed the complete removal of the solvent from the extracted and dried graphene. Additionally, electron paramagnetic resonance (EPR) measurements indicated the presence of carbon-based magnetism in the synthesized samples, suggesting potential applications in spintronic devices. Our findings highlight the effectiveness of ultrasonic treatment for producing high-quality few-layer graphene with desirable structural and magnetic properties.
Related Concept Videos
Physical Methods for Controlling Microbial Growth: Radiation and Filtration
Upstream Processing
Downstream Processing

