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An empirical model is developed that takes into account heat transport through the entire carbon nanofiber interconnect test structure and breakdown location. This electrothermal transport model elucidates observed current capacity behavior, and predicts variations in contact location with the support material. The resulting heat dissipation and current capacity are completely consistent with measurement...
To assess their potential for interconnect applications, the interplay between electrical and thermal transport in carbon nanofibers (CNFs) under high-current stresses is examined. Electrical properties of CNFs bridging tungsten-deposited gold electrodes are measured. Average voltage is recorded as a function of current in each current stress cycle, and the resulting average resistance is shown to...
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,...
Current-induced breakdown phenomena of carbon nanofibers (CNFs) for future on-chip interconnect applications are presented. The effect of heat dissipation via the underlying substrate is studied using different experimental configurations. Scanning electron microscopy (SEM) techniques are utilized to study the structural damage by current stress. While the measured maximum current density in the suspended...
Current-induced breakdown phenomena of carbon nanofibers (CNFs) for future on-chip interconnect applications are presented. The effect of heat dissipation via the underlying substrate is studied using different experimental configurations. Scanning electron microscopy (SEM) techniques are utilized to study the structural damage by current stress. While the measured maximum current density in the suspended...
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