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Carbon nanofibers (CNF) are studied in a horizontal configuration as a model for on-chip interconnects. The electrical performance is determined by both CNF resistivity and contact resistance with electrodes. Reliability and current capacity are determined by Joule heating in the system and the thermal accompanying transport. We show that current capacity can be modeled by accounting for the nature...
To study the reliability of carbon nanofibers (CNFs) under high-current stress, electrical measurements of CNF breakdown are performed for four configurations: (a) suspended, (b) supported, (c) suspended with tungsten deposited onto the CNF-electrode contact, and (d) supported with tungsten deposition. Supported CNF has enhanced current capacity, consistent with improved heat transport to the substrate,...
In a carbon nanofiber (CNF) metal contact such as a bridge between two metallic electrodes, passing high current (current stressing) reduces the total resistance of the system (CNF resistance RCNF and contact resistance Rc) by orders of magnitude. The role of current stressing is modeled as a reduction in the interfacial tunneling gap with transport characteristics attributed to tunneling between...
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