期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 42, 期 24, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/0022-3727/42/24/245204
关键词
-
资金
- Physical Sciences Research Council (EPSRC) [D66874X]
gamma-Al2O3 crystalline nanoparticles (NPs) are for the first time produced by the arc-discharge in water method. The discharge is studied in situ during the NP formation by simultaneously recording the voltage and current waveforms, emitted light intensity and time-resolved optical emission spectra and snapshots of the discharge. The microstructure of the NPs is investigated by high-resolution transmission electron microscopy, the chemical purity is confirmed by x-ray photoelectron spectroscopy and the crystalline structure by x-ray diffraction. The results experimentally demonstrate the successive phases that lead to the supersaturation condition governing this gas-phase bottom-up process for dielectric NP production.
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