Publication Date:
2014-12-13
Description:
Publication date: March 2015 Source: Vacuum, Volume 113 Author(s): Kazi Hanium Maria , Tetsu Mieno The effective synthesis of single-walled carbon nanotubes (SWNTs) by low-frequency bipolar pulsed arc discharge method using a newly developed bipolar pulsed current circuit with constant current and constant pulse duration is reported. In this method, there is no cathode deposit, which means that all the sublimated carbon becomes soot containing single-walled nanotubes. The soot production rate of the bipolar pulsed arc discharge method is compared with those of the DC, the AC, and the unipolar pulsed arc discharge methods. It is found that the soot production rate increases with increasing frequency whereas the quality of the produced SWNTs remains almost the same. The nanostructures of the synthesized SWNTs are characterized by a TEM and Raman spectroscopy.
Print ISSN:
0042-207X
Electronic ISSN:
1879-2715
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
