Investigations on graphene oxide for ion beam dosimetry applications

0525528 - ÚJF 2021 RIV GB eng J - Journal Article
Torrisi, L. - Silipigni, L. - Manno, D. - Serra, A. C. - Nassisi, V. - Cutroneo, Mariapompea - Torrisi, Alfio
Investigations on graphene oxide for ion beam dosimetry applications.
Vacuum. Roč. 178, č. 8 (2020), č. článku 109451. ISSN 0042-207X. E-ISSN 1879-2715
R&D Projects: GA MŠMT LM2015056; GA ČR GA19-02482S; GA MŠMT EF16_013/0001812
Institutional support: RVO:61389005
Keywords : Graphene oxide * reduced graphene oxide * ion irradiation * absorbed dose * dosimeter
OECD category: Materials engineering
Impact factor: 3.627, year: 2020
Method of publishing: Limited access
https://doi.org/10.1016/j.vacuum.2020.109451

The oxygen content in graphene oxide (GO) can be reduced by the ion beam irradiation in high vacuum conditions. The reduction changes the C/O atomic ratio that increases with the absorbed ion dose. Moreover, as the level of reduction increases, the surface flattens and the material becomes denser. At high absorbed doses, greater than about 100 MGy, the material is affected by the high energy deposited with damage radiation effects which make the C/O ratio not proportional to the dose. At low doses, less than about 100 MGy, the C/O atomic ratio shows an optimal linearity with the ion dose and is independent of the ion stopping power, thus assuming the characteristics of a good biocompatible water-tissue equivalent dosimeter.
Permanent Link: http://hdl.handle.net/11104/0309641