Direct Fabrication of Carbon Nanotubes STM Tips by Liquid Catalyst-Assisted Microwave Plasma-Enhanced Chemical Vapor Deposition
Figure 1
SEM pictures of
catalyst-deposited tungsten tips with different electrochemical conditions. (a)
voltage (4 V), concentration (0.05 M), and time (1 second); (b) 4 V, 0.05 M, and 5 seconds; (c) 8 V, 0.05 M, and 5 seconds; (d) 2 V, 0.001 M, and 5 seconds; (e) 2 V, 0.01 M, and 5 seconds; (d) 2 V, 0.1 M, and 5 seconds.
