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Several data sets of electrical breakdown in air of single-wall carbon nanotubes (SWNTs) on insulating substrates are collected and analyzed. These are data taken in different labs across the world on a wide range of SWNTs, spanning lengths 10 nm-8 mum, diameters 0.8 -3.2 nm and electrical contact resistance between 9-830 kOmega. A universal scaling of the Joule breakdown power with nanotube length is found, essentially independent of the insulating substrates used (here, SiO2, Si3N4, Al2O3). The electrical and thermal resistance at the nanotube-electrode contacts regulate the breakdown behavior for short (L < 0.6 mum) SWNTs, whereas the breakdown power scales linearly with length for longer tubes.
Device Research Conference, 2007 65th Annual
Date of Conference: 18-20 June 2007