Scaling parallel dielectrophoresis of carbon nanotubes: an enabling geometry.
Nanotechnology
; 23(18): 185308, 2012 May 11.
Article
em En
| MEDLINE
| ID: mdl-22513525
ABSTRACT
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 downwards to smaller sizes.
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MEDLINE
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En
Ano de publicação:
2012
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Article