Tailoring the shape of vanadium nanoparticles produced by gas aggregation source

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10454453" target="_blank" >RIV/00216208:11320/22:10454453 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Vj0BxSUF5O" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Vj0BxSUF5O</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.vacuum.2022.111545" target="_blank" >10.1016/j.vacuum.2022.111545</a>

Result language
angličtina
Original language name
Tailoring the shape of vanadium nanoparticles produced by gas aggregation source
Original language description
In this study, we have analyzed experimentally different strategies for controlling the morphology of vanadium nanoparticles produced by means of a magnetron-based gas aggregation source. It is shown that while low magnetron currents and aggregation pressures lead to the formation of cubic vanadium nanoparticles, which is most likely connected with different kinetics growth modes on {100} and {110} surfaces of vanadium, higher magnetron currents and pressures result in the spherical-like but highly irregular morphology of produced NPs. Furthermore, it was found that the size of the nanoparticles may be adjusted by introducing He into the working gas mixture. An increase in the He partial pressure causes a substantial decrease in the size of nanoparticles but has no impact on their shape. This effect is predominately connected with the enhanced nucleation caused by He, which favours the production of a higher number of smaller nanoparticles. Finally, the vanadium nanoparticles, irrespective of their initial shape, may be transformed into fully spherical ones by introducing oxygen into the main deposition chamber, which is connected by their extensive heating during their in-flight oxidation.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)