Self-assembly of high-performance multi-tube carbon nanotube field-effect transistors by ac dielectrophoresis

A physical self-assembly process based on ac-dielectrophoretic deposition of single-walled carbon nanotubes between metallic electrodes and subsequent gate-voltage controlled elimination of the metallic nanotubes is reported that allows fabrication of multi-tube carbon nanotube field-effect transist...

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Bibliographic Details
Published inInternational journal of materials research Vol. 98; no. 8; pp. 742 - 748
Main Authors Taeger, Sebastian, Mertig, Michael
Format Journal Article
LanguageEnglish
Published Munich De Gruyter 01.08.2007
Hanser
Subjects
Applied sciences
Carbon nanotube
Dielectrophoresis
DNA
Exact sciences and technology
Field-effect transistor
Metals. Metallurgy
Self-assembly
Carbon nanotube
Tube
DNA
Field-effect transistor
Carbon nanotubes
Self- assembly
Dielectrophoresis
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Summary:A physical self-assembly process based on ac-dielectrophoretic deposition of single-walled carbon nanotubes between metallic electrodes and subsequent gate-voltage controlled elimination of the metallic nanotubes is reported that allows fabrication of multi-tube carbon nanotube field-effect transistors with electrical ON/OFF ratios up to more than seven orders of magnitude. Before deposition, the carbon nanotubes were suspended by means of single-stranded DNA or sodium-taurodeoxycholate. Exposure of the devices to ethanol vapor revealed a higher sensitivity for devices made from DNA-suspended carbon nanotubes.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1862-5282
2195-8556
DOI:10.3139/146.101530