Skip to Main content Skip to Navigation
Journal articles

Growth of ruthenium dioxide nanostructures by micro-afterglow oxidation at atmospheric pressure

Abstract : Various ruthenium dioxide nanostructures were grown locally by the oxidation of ruthenium samples with an Ar-O-2 microwave micro-afterglow operated at atmospheric pressure. A special attention was paid to the distribution of the surface temperature of the sample which evolves between 530 K and 820 K. Whatever the treatment time, the temperature and the gas composition set within the studied ranges, a general nanostructure, made of lamellae separated by 20-50 nm, is found. When the temperature rises, localized nano-sea urchins, nanotubes with square sections, nano-needles, and more complex structures are found spread over the surface. Treated surfaces were characterized by different surface diagnostics (SEM, XRD, SIMS, etc.) Finally, a growth mechanism is proposed emphasizing the role of emerging defects and stress on the appearance of localized nanostructures.
Document type :
Journal articles
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-01285342
Contributor : Ijl Ul <>
Submitted on : Wednesday, March 9, 2016 - 9:38:43 AM
Last modification on : Monday, April 6, 2020 - 2:44:03 PM

Identifiers

Collections

Citation

D. Kuete Saa, R. P. Cardoso, Francis Kosior, A. Al Taweel, Thomas Gries, et al.. Growth of ruthenium dioxide nanostructures by micro-afterglow oxidation at atmospheric pressure. Surface and Coatings Technology, Elsevier, 2014, 255, pp.3-7. ⟨10.1016/j.surfcoat.2013.10.040⟩. ⟨hal-01285342⟩

Share

Metrics

Record views

117