Department: Grad. Program in Materials Science
Name: Joseph F. AuBuchon
Email: jaubuchon @ ucsd.edu
Grad Year: 2006
Vertical alignment of individual carbon nanotubes (CNTs) and CNT arrays during their growth has been demonstrated by many groups; however, there has been much less progress towards more complicated morphologies. In this work, we show the ability to use direct current plasma enhanced chemical vapor deposition to grow CNTs with sharp bends that maintain a constant tube diameter before and after a bend and the ability to grow structures with multiple bends resulting in a zigzag morphology. Additionally, bend angles over 90 degrees and other interesting morphologies have been synthesized. The sharp bends are achieved by strongly manipulating the electric field direction using field concentrating conductor plates. Bent or Zigzag structured CNTs could be used for many applications, e.g., related to mechanical nano-springs, nano-solenoids, complicated circuit nano-interconnections, or improved AFM probe tips.
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