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Dielectrophoresis-induced separation of metallic and semiconducting SWNT in a continuous flow microfluidic system

M Mattsson ; Andrei Gromov ; Staffan Dittmer (Institutionen för teknisk fysik) ; Emma Eriksson ; Oleg Nerushev ; Eleanor E B Campbell
Journal of Nanotechnology and Nanoscience (1533-4880 ). Vol. 7 (2007), p. 3431-3435.
[Artikel, refereegranskad vetenskaplig]

The AC dielectrophoresis-induced separation of metallic and semiconducting single-wall carbon nanotubes has been carried out in a continuous flow microfluidic system with isolated electrodes. The separation has been studied for single-wall carbon nanotube aqueous suspensions with ionic (sodium dodecylsulphate) and non-ionic (TritonX-100) surfactants. The efficiency of separation has been determined with the help of resonant Raman spectroscopy using various excitation energies. The prototype microfluidic cell presently shows somewhat inferior separation efficiency with respect to static dielectrophoretic filtering on arrays of microelectrodes but has potential for improvements. Factors influencing the separation efficiency and scaling up of the process are discussed.

Nyckelord: carbon nanotube separation



Denna post skapades 2007-12-26. Senast ändrad 2011-01-20.
CPL Pubid: 63880

 

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Institutioner (Chalmers)

Institutionen för fysik (GU) (GU)
Institutionen för teknisk fysik (1900-2015)

Ämnesområden

Molekylfysik

Chalmers infrastruktur