▎ 摘　　要

Nano-graphene particles (NGPs) were deposited by a pulsed discharge (PD) to ethanol in Ar gas atmosphere of about 600 Torr. The frequency (f) of the PD was changed from 1 to 5 kHz at constant duty ratio of 20%. Evaluations of the NGPs were performed with scanning electron microscope, high resolution transmission electron microscope, and Raman spectra. When f was changed from 1 to 5 kHz, domain size of the NGPs was decreased from 34 to 19 nm. The number of the graphene layers (GLs) was decreased from about 20 to 4, though the number of GLs was scattered from 24 to 2. These results show that the domain size and the number of the GLs can be controlled with f of the PD. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794522]