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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Quantum Capacitance Extraction for Carbon Nanotube Interconnects | Nanoscale Res Lett 2010 5 1424-1430 DOI 10.1007 s11671-010-9656-4 NANO EXPRESS Quantum Capacitance Extraction for Carbon Nanotube Interconnects Vidur Parkash Ashok K. Goel Received 2 March 2010 Accepted 19 May 2010 Published online 8 June 2010 The Author s 2010. This article is published with open access at Springerlink.com Abstract Electrical transport in metallic carbon nanotubes especially the ones with diameters of the order of a few nanometers can be best described using the Tomanaga Luttinger liquid TL model. Recently the TL model has been used to create a convenient transmission line like phenomenological model for carbon nanotubes. In this paper we have characterized metallic nanotubes based on that model quantifying the quantum capacitances of individual metallic single walled carbon nanotubes and crystalline bundles of single walled tubes of different diameters. Our calculations show that the quantum capacitances for both individual tubes and the bundles show a weak dependence on the diameters of their constituent tubes. The nanotube bundles exhibit a significantly large quantum capacitance due to enhancement of density of states at the Fermi level. Introduction Recently carbon nanotubes have acquired importance as a material with a wide variety of potential applications in nanoelectronics. A significant amount of interest has been generated in metallic carbon nanotubes for their application as an on-chip interconnect replacing the traditional copper wires which are nearing their performance limits. The International Technology Roadmap for Semiconductors ITRS has already placed carbon nanotubes as a potential candidate interconnect material for technology nodes beyond 22 nm 1 . The propagation speed of a signal on a V. Parkash A. K. Goel Department of Electrical and Computer Engineering Michigan Technological University Houghton MI 49931 USA e-mail vparkash@mtu.edu 0 Springer transmission line is related to distributed inductance and capacitance of the .
