Carbon Nanotube Field-Effect Transistors (CNFETs) are excellent candidates for designing highly energy-efficient future digital systems. However, carbon nanotubes (CNTs) are inherently highly subject to imperfections that pose major obstacles to robust CNFET digital VLSI. This paper summarizes commonly raised questions and concerns about CNFET technology through a series of frequently asked questions. The specific questions addressed in this paper are motivated by recent advances in the field since the publication of our earlier paper on frequently asked questions in the Proceedings of the 2009 Design Automation Conference.
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