Fig. 3From: High Current Emission from Patterned Aligned Carbon Nanotubes Fabricated by Plasma-Enhanced Chemical Vapor DepositionCross-sectional view of CNTs prepared with different H2/C2H2 mixture ratio. The H2/C2H2 flow rates were a 140/2 sccm, b 160/5 sccm, c 140/5 sccm, and d 180/10 sccm, respectivelyBack to article page