Correlative Raman-SEM imaging of sp2-sp3 hybridized carbon heterostructures

0486983 - FZÚ 2018 RIV CN eng A - Abstrakt
Varga, Marián - Vretenár, V. - Váňa, R. - Potocký, Štěpán - Kromka, Alexander
Correlative Raman-SEM imaging of sp2-sp3 hybridized carbon heterostructures.
2nd International Conference on Applied Surface Science (ICASS). Dalian, 2017 - (Rudolph, H.). ISSN 0169-4332. E-ISSN 1873-5584.
[International Conference on Applied Surface Science (ICASS) /2./. 12.06.2017-15.06.2017, Dalian]
Grant CEP: GA ČR GC15-22102J
Institucionální podpora: RVO:68378271
Klíčová slova: RISE microscopy * Raman * carbon
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
https://www.elsevier.com/events/conferences/international-conference-on-applied-surface-science/programme

We present RISE microscopy of sp2-sp3 hybridized carbon heterostructures. We study a composite of single-wall carbon nanotubes decorated with DNPs and a SWCNT paper overgrown with nanocrystalline diamond. The Raman measurements reveal a complex spectrum consisting from characteristic peaks/bands of both carbon phases. The overlaid SEM image with color-coded Raman map link structural surface properties of the heterostructure with the molecular compound information. That allows an easier and clearer interpretation and understanding of Raman spectra features, shift of the individual peaks and determination of the dominant carbon phase within the sp2-sp3 heterostructure. We found and in-situ confirmed by Raman measurements a structural degradation of samples after electron beam irradiation at higher voltages. It should be noted that Raman laser irradiation at higher powers degraded the sample too, as evidenced in altered Raman spectra and surface features by correlative RISE microscopy.
Trvalý link: http://hdl.handle.net/11104/0281688