Dielectrophoresis field flow fractionation of single-walled carbon nanotubes.
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.
Peng
Haiqing
H
Carbon Nanotechnology Laboratory, Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, 6100 South Main Street, Houston, TX 77005, USA.
Alvarez
Noe T
NT
Kittrell
Carter
C
Hauge
Robert H
RH
Schmidt
Howard K
HK
D046209:Electrophoresis, Microchip / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D012680:Sensitivity and Specificity
D037742:Nanotubes, Carbon