Energy efficiency in nanoscale synthesis using nanosecond plasmas
Pai, David Z., Ostrikov, Kostya, Kumar, Shailesh, Lacoste, Deanna A., Levchenko, Igor, & Laux, Christophe O. (2013) Energy efficiency in nanoscale synthesis using nanosecond plasmas. Scientific Reports, 3(1221).
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 3 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.
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|Item Type:||Journal Article|
|Divisions:||Current > QUT Faculties and Divisions > Science & Engineering Faculty|
|Deposited On:||09 Jul 2014 01:11|
|Last Modified:||09 Jul 2014 23:35|
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