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The figure shows a FET using CNT. Identify CNT.

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The figure shows a FET using CNT. Identify CNT.

(a) A

(b) B

(c) C

(d) D

This question was posed to me in examination.

This key question is from Carbon Nanostructures topic in chapter Nanomaterials of Engineering Physics II

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The correct choice is (d) D

To elaborate: In the diagram, A is the source and the drain (gold), B is the insulating layer of silicon dioxide, C is the gat made of silicon substrate and D is the CNT. CNTs are useful as the new generation interconnect structures as well as FETs.

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