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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:00 |
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Conference: Bucharest University Faculty of Physics 2023 Meeting
Section: Physics and Technology of Renewable and Alternative Energy Sources
Title:
Atomic force microscopy investigation of advanced carbon nanowall structures
Authors:
Cristian ISTRATE (1,2), Alexandra TREFILOV (1,3), Adriana BĂLAN (1)
Affiliation:
1) University of Bucharest, Faculty of Physics, 405 Atomistilor str., PO Box MG-38, Bucharest-Măgurele, Romania
2) Colegiul Naţional "Mihai Viteazul" Ploieşti, Romania
3) National R&D Institute for Laser, Plasma and Radiation Physics (INFLPR), Măgurele, Romania
E-mail
istratecristi@yahoo.com
Keywords:
carbon nanowalls, atomic force microscopy
Abstract:
Carbon nanowalls (CNWs), vertically aligned graphene sheets, are very attractive materials in various fields due to their high conductivity, mechanical robustness, optical and other remarkable properties. In the present work, we investigate advanced CNW structures obtained by plasma assisted chemical vapour deposition technique using atomic force microscopy (AFM). The surface features are imaged in a non-contact mode. 3D profiles from the topography images are analysed and the distances between the sheets are evaluated. The electrical charge distribution on the sample surface is also studied. Current-voltage curves obtained by AFM spectroscopy are measured at selected points of interest on the sample surface. By combining all these techniques enabled by AFM, valuable information on surface properties can be retrieved, leading to a deeper understanding of conduction mechanisms, optical absorption, hydrofobicity, etc.
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