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Title: Nanoparticle fractionation using an aligned carbon nanotube array
Authors: Lim, X. 
Xu, H. 
Nicole Chew, Y.H.
Phua, Y.H.
Sie, E.J.
Sum, T.C.
Chia, G.H.
Chin, W.S. 
Sow, C.-H. 
Issue Date: 2010
Citation: Lim, X., Xu, H., Nicole Chew, Y.H., Phua, Y.H., Sie, E.J., Sum, T.C., Chia, G.H., Chin, W.S., Sow, C.-H. (2010). Nanoparticle fractionation using an aligned carbon nanotube array. Nanotechnology 21 (29) : -. ScholarBank@NUS Repository.
Abstract: A technique utilizing the capillary assisted sieving capability of carbon nanotubes (CNTs) to achieve fractionation of nanoparticles of small size distribution is presented. By dipping aligned CNT arrays into a solution comprising different sized quantum dots (QDs), size-selective gradient decoration of QDs onto CNTsis achieved. The fractionating capability of CNTs is alsodemonstrated for poly-dispersed manganese doped zinc sulfide nanoparticles and QDs of varying sizes and chemical compositions, which we attribute to the size-selective sieving effect of CNTs. By controlling the terminating point for the flow of QDs across the CNT array, a QD size specific CNT/QD hybrid structure is achieved. © 2010 IOP Publishing Ltd.
Source Title: Nanotechnology
ISSN: 09574484
DOI: 10.1088/0957-4484/21/29/295702
Appears in Collections:Staff Publications

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