1. Structure of carbon nanotubes:
a.) Sketch armchair, chiral, and zig-zag structures of CNTs. Describe the chiral vector for each.
b.) Describe the structural properties necessary for semiconducting CNTs.
 

2. Field effect transistors utilizing carbon nanotubes:
a.) Sketch the cross-section of a bottom gate CNT FET.
b.) For ambivalent CNTs, when would you expect to see light emission from a bottom gate CNT FET?
 

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