Detail publikačního výsledku

Local Anodic Oxidation of Graphene: The Role of Number of Layers, Load Force, and Substrate

VYMAZAL, J.; BARTOŠÍK, M.; KONEČNÝ, M.; PIASTEK, J.; MACH, J.; SUPALOVÁ, L.; ŠPAČEK, O.; ŠIKOLA, T.

Originální název

Local Anodic Oxidation of Graphene: The Role of Number of Layers, Load Force, and Substrate

Anglický název

Local Anodic Oxidation of Graphene: The Role of Number of Layers, Load Force, and Substrate

Druh

Článek WoS

Originální abstrakt

Local anodic oxidation has become a convenient technique for fabricating graphene oxide nanostructures in fundamental research (e.g., nanoelectronics). The process is typically controlled by tip-sample voltage, scanning speed, relative humidity, and tip characteristics (e.g., tip radius). The role of other parameters, such as the number of layers, load force, and graphene-substrate adhesion, is discussed in this paper. It is shown by atomic force microscopy, Kelvin probe force microscopy, and Raman spectroscopy that the oxidation of graphene is achievable only under specific conditions: low pulling force and sufficiently strong adhesion of graphene to its substrate. Such conditions ensure the stability of graphene on the surface and the proper formation of the water meniscus, which serves as a source of oxidizing ions, resulting in a reproducible oxidation process. Failure to comply with these conditions may lead to the formation of structures other than oxides (e.g., removal of graphene or the formation of air/water cavities under graphene), which is also demonstrated.

Anglický abstrakt

Local anodic oxidation has become a convenient technique for fabricating graphene oxide nanostructures in fundamental research (e.g., nanoelectronics). The process is typically controlled by tip-sample voltage, scanning speed, relative humidity, and tip characteristics (e.g., tip radius). The role of other parameters, such as the number of layers, load force, and graphene-substrate adhesion, is discussed in this paper. It is shown by atomic force microscopy, Kelvin probe force microscopy, and Raman spectroscopy that the oxidation of graphene is achievable only under specific conditions: low pulling force and sufficiently strong adhesion of graphene to its substrate. Such conditions ensure the stability of graphene on the surface and the proper formation of the water meniscus, which serves as a source of oxidizing ions, resulting in a reproducible oxidation process. Failure to comply with these conditions may lead to the formation of structures other than oxides (e.g., removal of graphene or the formation of air/water cavities under graphene), which is also demonstrated.

Klíčová slova

water; adhesion; AFM

Klíčová slova v angličtině

water; adhesion; AFM

Autoři

VYMAZAL, J.; BARTOŠÍK, M.; KONEČNÝ, M.; PIASTEK, J.; MACH, J.; SUPALOVÁ, L.; ŠPAČEK, O.; ŠIKOLA, T.

Vydáno

03.02.2026

Nakladatel

American Chemical Society

Periodikum

ACS Omega

Svazek

11

Číslo

4

Stát

Spojené státy americké

Strany od

6434

Strany do

6441

Strany počet

8

URL

https://pubs.acs.org/doi/10.1021/acsomega.5c10137

Plný text v Digitální knihovně

http://hdl.handle.net/11012/260593

BibTex

@article{BUT202022,
  author="Jan {Vymazal} and Miroslav {Bartošík} and Martin {Konečný} and Jakub {Piastek} and Jindřich {Mach} and Linda {Supalová} and Ondřej {Špaček} and Tomáš {Šikola}",
  title="Local Anodic Oxidation of Graphene: The Role of Number of Layers, Load Force, and Substrate",
  journal="ACS Omega",
  year="2026",
  volume="11",
  number="4",
  pages="6434--6441",
  doi="10.1021/acsomega.5c10137",
  issn="2470-1343",
  url="https://pubs.acs.org/doi/10.1021/acsomega.5c10137"
}