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High-Energy Excimer Annealing of Nanodiamond Layers.
Hurtuková, Klaudia; Slepicková Kasálková, Nikola; Fajstavr, Dominik; Lapcák, Ladislav; Svorcík, Václav; Slepicka, Petr.
Afiliación
  • Hurtuková K; Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic.
  • Slepicková Kasálková N; Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic.
  • Fajstavr D; Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic.
  • Lapcák L; Central Laboratories, University of Chemistry and Technology, 166 28 Prague, Czech Republic.
  • Svorcík V; Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic.
  • Slepicka P; Department of Solid State Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic.
Nanomaterials (Basel) ; 13(3)2023 Jan 30.
Article en En | MEDLINE | ID: mdl-36770517
Here, we aimed to achieve exposure of a nanodiamond layer to a high-energy excimer laser. The treatment was realized in high-vacuum conditions. The carbon, in the form of nanodiamonds (NDs), underwent high-temperature changes. The induced changes in carbon form were studied with Raman spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction (XRD) and we searched for the Q-carbon phase in the prepared structure. Surface morphology changes were detected by atomic force microscopy (AFM) and scanning electron microscopy (SEM). NDs were exposed to different laser energy values, from 1600 to 3000 mJ cm-2. Using the AFM and SEM methods, we found that the NDs layer was disrupted with increasing beam energy, to create a fibrous structure resembling Q-carbon fibers. Layered micro-/nano-spheres, representing the role of diamonds, were created at the junction of the fibers. A Q-carbon structure (fibers) consisting of 80% sp3 hybridization was prepared by melting and quenching the nanodiamond film. Higher energy values of the laser beam (2000 and 3000 mJ cm-2), in addition to oxygen bonds, also induced carbide bonds characteristic of Q-carbon. Raman spectroscopy confirmed the presence of a diamond (sp3) phase and a low-intensity graphitic (G) peak occurring in the Q-carbon form samples.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2023 Tipo del documento: Article País de afiliación: República Checa Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanomaterials (Basel) Año: 2023 Tipo del documento: Article País de afiliación: República Checa Pais de publicación: Suiza