Počet záznamů: 1
The use of sample positioning to control defect creation by oxygen plasma in isotopically labelled bilayer graphene membranes
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SYSNO ASEP 0541683 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The use of sample positioning to control defect creation by oxygen plasma in isotopically labelled bilayer graphene membranes Tvůrce(i) Guerra, Valentino Libero Pio (UFCH-W) ORCID, RID, SAI
Valeš, Václav (UFCH-W) RID, ORCID
Mikšátko, Jiří (UFCH-W)
Plšek, Jan (UFCH-W) RID, ORCID
Drogowska-Horna, Karolina A. (UFCH-W)
Volochanskyi, Oleksandr (UFCH-W) ORCID, SAI
Kalbáč, Martin (UFCH-W) RID, ORCIDZdroj.dok. RSC Advances. - : Royal Society of Chemistry
Roč. 11, č. 17 (2021), s. 10316-10322Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova graphene membranes ; oxygen plasma ; Raman spectroscopy Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP GX20-08633X GA ČR - Grantová agentura ČR EF16_026/0008382 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000629707400056 EID SCOPUS 85102727646 DOI 10.1039/d1ra01249e Anotace 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. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2022 Elektronická adresa http://hdl.handle.net/11104/0319213
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