The Role of Electrical and Thermal Contact Resistance for Joule Breakdown of Single-Wall Carbon Nanotubes - Condensed Matter > Mesoscale and Nanoscale PhysicsReportar como inadecuado




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Abstract: Several data sets of electrical breakdown in air of single-wall carbonnanotubes SWNTs on insulating substrates are collected and analyzed. Auniversal scaling of the Joule breakdown power with nanotube length is found,which appears independent of the insulating substrates used or their thickness.This suggests the thermal resistances at the interface between SWNT andinsulator, and between SWNT and electrodes, govern heat sinking from thenanotube. Analytical models for the breakdown power scaling are presented,providing an intuitive, physical understanding of the breakdown process. Theelectrical and thermal resistance at the electrode contacts limit the breakdownbehavior for sub-micron SWNTs, the breakdown power scales linearly with lengthfor microns-long tubes, and a minimum breakdown power ~ 0.05 uW is observedfor the intermediate ~ 0.5 um length range.



Autor: Eric Pop

Fuente: https://arxiv.org/







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