CMOS-based carbon nanotube pass-transistor logic integrated circuits.


Field-effect transistors based on carbon nanotubes have been shown to be faster and less energy consuming than their silicon counterparts. However, ensuring these advantages are maintained for integrated circuits is a challenge. Here we demonstrate that a significant reduction in the use of field-effect transistors can be achieved by constructing carbon nanotube-based integrated circuits based on a pass-transistor logic configuration, rather than a complementary metal-oxide semiconductor configuration. Logic gates are constructed on individual carbon nanotubes via a doping-free approach and with a single power supply at voltages as low as 0.4 V. The pass-transistor logic configurarion provides a significant simplification of the carbon nanotube-based circuit design, a higher potential circuit speed and a significant reduction in power consumption. In particular, a full adder, which requires a total of 28 field-effect transistors to construct in the usual complementary metal-oxide semiconductor circuit, uses only three pairs of n- and p-field-effect transistors in the pass-transistor logic configuration.





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Publication Info

Ding, Li, Zhiyong Zhang, Shibo Liang, Tian Pei, Sheng Wang, Yan Li, Weiwei Zhou, Jie Liu, et al. (2012). CMOS-based carbon nanotube pass-transistor logic integrated circuits. Nature communications, 3(1). p. 677. 10.1038/ncomms1682 Retrieved from

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Jie Liu

George Barth Geller Distinguished Professor of Chemistry

Dr. Liu’s research interests are focusing on the chemistry and material science of nanoscale materials. Specific topics in his current research program include: Self-assembly of nanostructures; Preparation and chemical functionalization of single walled carbon nanotubes; Developing carbon nanotube based chemical and biological sensors; SPM based fabrication and modification of functional nanostructures.

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