Comment on "Using the selective functionalization of metallic single-walled carbon nanotubes to control dielectrophoretic mobility"

Article Abstract:

The dielectrophoresis (DEP) is studied as a function of the electric field frequency and of the surfactant concentration, keeping all other conditions identical. It is concluded from the results that metallic single-walled nanotubes (SWNTs) are separated from semiconducting SWNTs via DEP at high frequency, providing that suspensions are free of bundles and that heat dissipation is negligible.

Surface active agents, Surface Active Agent Manufacturing

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Using the selective functionalization of metallic single-walled carbon nanotubes to control dielectrophoretic mobility

Article Abstract:

The effect of sidewall functionalization on the dielectrophoretic mobility of single-walled carbon nanotubes is investigated using a 10-micrometer electrode gap and an alternating current electric field of 10 V and 10 Mhz. A high degree of alignment is observed for material deposited across the gap, for nanotubes dispersed in aqueous solution using 1% sodium dodecyl sulfate.

Electric properties, Carbon, Aqueous solution reactions

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Reply to "Comment on 'Using the selective functionalization of metallic single-walled carbon nanotubes to control dielectrophoretic mobility'"

Article Abstract:

Environmental factors contribute to changes in the radial breathing mode (RBM) spectra, which complicates their use to benchmark a potential separation. It is concluded that the apparent enrichment of metallic features can be completely attributed to the fact that dieelctrophoresis (DEP) creates smaller bundles of nanotubes compared to the drop-dried control method used.

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