Scaling Carbon Nanotube Localization by Floating Potential Dielectrophoresis: An Enabling Geometry
Dielectrophoresis has been used as a technique for the parallel localization and alignment of both semiconducting and metallic carbon nanotubes (CNTs) at junctions between electrodes. A variation of this technique known as Floating Potential Dielectrophoresis (FPD) allows for a self-limiting number...
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| Format: | Others |
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BYU ScholarsArchive
2011
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| Online Access: | https://scholarsarchive.byu.edu/etd/2701 https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3700&context=etd |
| Summary: | Dielectrophoresis has been used as a technique for the parallel localization and alignment of both semiconducting and metallic carbon nanotubes (CNTs) at junctions between electrodes. A variation of this technique known as Floating Potential Dielectrophoresis (FPD) allows for a self-limiting number of CNTs to be localized at each junction, on a massively parallel scale. However, the smallest FPD geometries to date are restricted to conductive substrates and have a lower limit on floating electrode size. We present a geometry which eliminates this lower limit and enables FPD to be performed on non-conducting substrates. We also discuss experiments clarifying the self-limiting mechanism of CNT localization and how it can be used advantageously as devices are scaled downward to smaller sizes. |
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