Abstract
A review on the syntheses and electrical characterization of Y-shaped multi-walled carbon nanotube morphologies is presented. Modified thermal CVD processes, using Ti precursors, are used to grow Y-junctions of different geometries and distribution of catalyst particles. It has been established that novel electrical switching behavior is feasible, where any one of the three branches of the Y-junction can be used for modulating the electrical current flow through the other two branches. Current blocking behavior, leading to perfect rectification, is seen which could be related to the interplay of the carrier lifetime and the transit time. The overall goal is to investigate the possibility of obtaining novel functionality at the nanoscale, which can lead to new device paradigms.
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Bandaru, P.R. Electrical characterization of carbon nanotube Y-junctions: a foundation for new nanoelectronics. J Mater Sci 42, 1809–1818 (2007). https://doi.org/10.1007/s10853-006-0729-9
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DOI: https://doi.org/10.1007/s10853-006-0729-9