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- Title
Transmission Electron Microscopy Investigation of Self‐assembled 'Si/Mn<sub>4</sub>Si<sub>7</sub>‐Alloy' Janus Nanosphere Architectures Produced by a HelixJet Atmospheric Plasma Source.
- Authors
Wolff, Niklas; Dworschak, Maren; Benedikt, Jan; Kienle, Lorenz
- Abstract
The HelixJet atmospheric plasma‐assisted synthesis can be a new toolbox to realize dedicated nanoparticle architectures such as Janus‐type morphologies. Silicon nanoparticles produced by the decomposition of Silane molecules are directed into an in‐flight annealing stage. The applied high‐temperature supplies a metal vapor rich atmosphere containing Manganese, Chromium, Iron, and Tin outgassing from the used steel tube. The metal atoms alloy into the Silicon nanoparticles and form a self‐assembled 'Si/MnxSiy‐alloy' Janus nanosphere architecture. The Janus particles nanochemistry is thoroughly examined in detail by the analytic capabilities of transmission electron microscopy. The combined approach of electron diffraction, EDS, and EELS identifies the Janus particle composition consisting of a pure Si hemisphere interfaced to an alloyed Mn4Si7 hemisphere covered by a thin (MnaFebCrc)Siy surface shell.
- Subjects
JANUS particles; TRANSMISSION electron microscopy; PLASMA sources; SILICON alloys; NANOPARTICLES; METAL vapors; NANOSILICON
- Publication
Particle & Particle Systems Characterization, 2024, Vol 41, Issue 3, p1
- ISSN
0934-0866
- Publication type
Article
- DOI
10.1002/ppsc.202300094