title: Nanoparticle fractionation using an aligned carbon nanotube array.
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 CNTs is achieved. The fractionating capability of CNTs is also demonstrated 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.
authors.affiliation: NUS Graduate School for Integrative Sciences and Engineering (NGS), Centre for Life Sciences (CeLS), #05-01, 28 Medical Drive, 117456, Singapore.
authors.forename: Xiaodai
authors.initials: X
authors.lastname: Lim
authors.forename: Hairuo
authors.initials: H
authors.lastname: Xu
authors.forename: Yi Hui Nicole
authors.initials: YH
authors.lastname: Chew
authors.forename: Yi Hui
authors.initials: YH
authors.lastname: Phua
authors.forename: Edbert Jarvis
authors.initials: EJ
authors.lastname: Sie
authors.forename: Tze Chien
authors.initials: TC
authors.lastname: Sum
authors.forename: Guo Hao
authors.initials: GH
authors.lastname: Chia
authors.forename: Wee Shong
authors.initials: WS
authors.lastname: Chin
authors.forename: Chorng-Haur
authors.initials: CH
authors.lastname: Sow
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry; D017895:Manganese Compounds / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D046228:Microarray Analysis / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010316:Particle Size; D045663:Quantum Dots; D018036:Selenium Compounds / Q000737:chemistry; D013440:Sulfides / Q000737:chemistry; D017967:Zinc Compounds / Q000737:chemistry
chemical_list: D019187:Cadmium Compounds; D017895:Manganese Compounds; D037742:Nanotubes, Carbon; D018036:Selenium Compounds; D013440:Sulfides; D017967:Zinc Compounds; C034939:cadmium sulfide; C058667:cadmium selenide; C031238:zinc sulfide