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Energy efficiency in nanoscale synthesis using nanosecond plasmas.

ABSTRACT: We report a nanoscale synthesis technique using nanosecond-duration plasma discharges. Voltage pulses 12.5?kV in amplitude and 40?ns in duration were applied repetitively at 30?kHz across molybdenum electrodes in open ambient air, generating a nanosecond spark discharge that synthesized well-defined MoO? nanoscale architectures (i.e. flakes, dots, walls, porous networks) upon polyamide and copper substrates. No nitrides were formed. The energy cost was as low as 75?eV per atom incorporated into a nanostructure, suggesting a dramatic reduction compared to other techniques using atmospheric pressure plasmas. These findings show that highly efficient synthesis at atmospheric pressure without catalysts or external substrate heating can be achieved in a simple fashion using nanosecond discharges.

SUBMITTER: Pai DZ

PROVIDER: S-EPMC3564032 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Energy efficiency in nanoscale synthesis using nanosecond plasmas.

Pai David Z DZ Ken Ostrikov Kostya K Kumar Shailesh S Lacoste Deanna A DA Levchenko Igor I Laux Christophe O CO

Scientific reports 20130205

We report a nanoscale synthesis technique using nanosecond-duration plasma discharges. Voltage pulses 12.5 kV in amplitude and 40 ns in duration were applied repetitively at 30 kHz across molybdenum electrodes in open ambient air, generating a nanosecond spark discharge that synthesized well-defined MoO₃ nanoscale architectures (i.e. flakes, dots, walls, porous networks) upon polyamide and copper substrates. No nitrides were formed. The energy cost was as low as 75 eV per atom incorporated into ...[more]

PMID: 23386976

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