The use of sample positioning to control defect creation by oxygen plasma in isotopically labelled bilayer graphene membranes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F21%3A00541683" target="_blank" >RIV/61388955:_____/21:00541683 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0319213" target="_blank" >http://hdl.handle.net/11104/0319213</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d1ra01249e" target="_blank" >10.1039/d1ra01249e</a>

Result language
angličtina
Original language name
The use of sample positioning to control defect creation by oxygen plasma in isotopically labelled bilayer graphene membranes
Original language description
Monolayer and isotopically labelled bilayer graphene membranes were prepared on grids for transmission electron microscopy (TEM). In order to create defects in the graphene layers in a controlled way, we studied the sensitivity of the individual graphene layers to the oxygen plasma treatment. We tested samples with different configurations by varying the order of the transfer of layers and changing the orientation of the samples with respect to the plasma chamber. Using Raman spectroscopy, HRTEM and X-ray photoelectron spectroscopy, we demonstrated defect formation and determined the quantity and chemical composition of the defects. By keeping the sample structure and the setup of the experiment unchanged, the significant role of the sample orientation with respect to the chamber was demonstrated. The effect was accounted for by the variation of the accessibility of the sample surface for the reactive species. Therefore, this effect can be used to control the degree of damage in each layer, resulting in differing numbers of defects present on each side of the sample.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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