Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 19, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3259781
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- European Synchrotron Radiation Facility (ESRF)
- Israeli Academy of Science [1270-04]
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A plasma column ejected directly from solid copper by localized microwaves is studied. The effect stems from an induced hotspot that melts and emits ionized copper vapors as a confined fire column. Nanoparticles of similar to 20-120 nm size were revealed in the ejected column by in situ small-angle x-ray scattering. Optical spectroscopy confirmed the dominance of copper particles in the plasma column originating directly from the copper substrate. Nano- and macroparticles of copper were verified also by ex situ scanning electron microscopy The direct conversion of solid metals to nanoparticles is demonstrated and various applications are proposed. 0 2009 American Institute of Physics. [doi: 10.1063/1.3259781]
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