Dielectrophoresis field flow fractionation of single-walled carbon nanotubes

Haiqing Peng; Noe T Alvarez; Carter Kittrell; Robert H Hauge; Howard K Schmidt

doi:10.1021/ja0621501

Dielectrophoresis field flow fractionation of single-walled carbon nanotubes

J Am Chem Soc. 2006 Jul 5;128(26):8396-7. doi: 10.1021/ja0621501.

Authors

Haiqing Peng¹, Noe T Alvarez, Carter Kittrell, Robert H Hauge, Howard K Schmidt

Affiliation

¹ Carbon Nanotechnology Laboratory, Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, 6100 South Main Street, Houston, TX 77005, USA.

PMID: 16802794
DOI: 10.1021/ja0621501

Abstract

We report a study on Dielectrophoresis Field Flow Fractionation of Single-Wall Carbon Nanotubes (SWNTs). SWNTs, individually suspended in 1% SDBS solution, were separated by type when they passed a dielectrophoresis field flow fractionation device where 1 MHz AC voltage was supplied and the field strength was well below 1 V per mum. Furthermore, we uniquely observed enrichment of semiconductive SWNTs based on their band gap. In addition to Raman spectrum, UV-vis absorption and NIR fluorescence spectra were used for solution samples for characterization.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Electrophoresis, Microchip / methods*
Nanotubes, Carbon / chemistry*
Sensitivity and Specificity

Substances

Nanotubes, Carbon