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Alternating current dielectrophoresis of carbon nanotubes
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
2005 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 98, no 5Article in journal (Refereed) Published
Abstract [en]

We report on the deposition of individual semiconducting single-walled carbon nanotubes (s-SWNTs) , suspended in an aqueous solution of sodium dodecylsulfate (SDS), onto predefined electrodes using alternating current dielectrophoresis up to 100 MHz. The successful deposition is attributed to the formation of an ionic double layer encapsulating the nanotubes by surface adsorption of the SDS molecules. The nanotube-micella complex formed has a greater polarization than that of the s-SWNTs, which is theoretically shown to be frequency dependent up to 10 GHz. Carbon nanotube field-effect transistors showing large on/off-state current ratios of 108 were demonstrated.

Place, publisher, year, edition, pages
2005. Vol. 98, no 5
Keyword [en]
separation
Identifiers
URN: urn:nbn:se:kth:diva-15042DOI: 10.1063/1.2037866ISI: 000231885600088Scopus ID: 2-s2.0-25144525542OAI: oai:DiVA.org:kth-15042DiVA: diva2:333083
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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