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Self-assembly of single walled carbon nanotubes onto cotton to make conductive yarn

Zhang, W, Tan, YY, Wu, C and Silva, SRP (2012) Self-assembly of single walled carbon nanotubes onto cotton to make conductive yarn Particuology, 10 (4). 517 - 521. ISSN 1674-2001

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Abstract

A simple, economical and scalable technique is demonstrated to make conductiveyarn. Singlewalledcarbonnanotubes (SWCNTs) are non-covalently functionalized with dye (Acid Red 91) and dispersed in water; while cottonyarn is treated with poly (ethylene imine). When the resulting yarn is immersed in the SWCNT dispersion, SWCNTs self-assemble onto the yarn due to electrostatic forces between the functionalized nanotubes and yarn. Scanning electron microscopy, transmission electron microscopy and Raman spectroscopy indicate the assembly of carbonnanotubes. The SWCNT functionalized yarn exhibits reasonable electrical conduction behaviour and are then used to make chemiresistors. The electrical resistance of the chemiresistors used as sensors increases on exposure to ammonia gas, which can be explained in terms of electron transfer between gas molecules and SWCNTs.

Item Type: Article
Additional Information: NOTICE: this is the author’s version of a work that was accepted for publication in articuology . Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Particuology , 10(4), August 2012, DOI 10.1016/j.partic.2011.06.011 .
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Depositing User: Symplectic Elements
Date Deposited: 02 Nov 2012 10:29
Last Modified: 23 Sep 2013 19:43
URI: http://epubs.surrey.ac.uk/id/eprint/728259

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