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Recipe. Deposit catalytic nickel nanoparticles onto a thoroughly washed polished baking tray of single-crystal silicon. Use only well-refined nickel of the first-class domestic brands. Perform the deposition in a glow-discharge oven for several minutes continuously adding small amounts of the noble gas argon. Put the obtained nanoparticles into a microwave oven, let in a mixture of methane, argon, and hydrogen. Bake nanodonuts within 20 minutes.

The carbon nanotori (nanodonuts) were prepared by method of plasma-enhanced chemical vapor deposition (PECVD) by using nickel nanoparticles as catalyst.
Author: Dr. Rostislav V. Lapshin, Mr. Pavel V. Azanov
Organization: Institute of Physical Problems named after F. V. Lukin
Scan size: 10x10 µm
Probes used: NSG10
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