Conductive tracks in graphene oxide foils induced by micro beams of MeV helium ions

0560402 - ÚJF 2023 RIV CH eng J - Journal Article
Torrisi, L. - Havránek, Vladimír - Silipigni, L. - Torrisi, A. - Cutroneo, Mariapompea
Conductive tracks in graphene oxide foils induced by micro beams of MeV helium ions.
Diamond and Related Materials. Roč. 128, OCT (2022), č. článku 109281. ISSN 0925-9635. E-ISSN 1879-0062
R&D Projects: GA MŠMT EF16_013/0001812
Research Infrastructure: CANAM II - 90056
Institutional support: RVO:61389005
Keywords : condutive track * graphene oxide * helium ion beam * microbeam * reduced graphene oxide
OECD category: Nuclear physics
Impact factor: 4.1, year: 2022
Method of publishing: Limited access
https://doi.org/10.1016/j.diamond.2022.109281

Conductive tracks based on reduced graphene oxide (rGO) were induced by MeV energy helium ion microbeams in graphene oxide (GO) sheets. The computerized X-Y step motors movement of the GO foil in front of the fixed ion microbeam in a high vacuum produces a reduction of the functionalized oxygen groups, generating a graphene-like track with high electrical conductivity. The conductive track generated on the insulating matrix has a depth dependent on the range of ions used, maintains the electrical properties even under bending stress, and can electrically connect devices made of the same carbon-based material or different materials. Scanning electron microscopy, characteristic X-ray emission, electron conductivity measurements, Raman spectroscopy, surface wetting and roughness, X-ray diffraction, and optical spectroscopy are employed to investigate the ion beam modifications induced in the GO structure.
Permanent Link: https://hdl.handle.net/11104/0333321