Dielectrophoresis-induced separation of metallic and semiconducting single-wall carbon nanotubes in a continuous flow microfluidic system

Mattias Mattsson; Andrei Gromov; Staffan Dittmer; Emma Eriksson; Oleg A. Nerushev; Eleanor E.B. Campbell

doi:10.1166/jnn.2007.830

Dielectrophoresis-induced separation of metallic and semiconducting single-wall carbon nanotubes in a continuous flow microfluidic system

Mattias Mattsson, Andrei Gromov, Staffan Dittmer, Emma Eriksson, Oleg A. Nerushev, Eleanor E.B. Campbell

Department of Physics

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	3431-3435
Number of pages	5
Journal	Journal of Nanoscience and Nanotechnology
Volume	7
Issue number	10
DOIs	https://doi.org/10.1166/jnn.2007.830
State	Published - Oct 2007

Keywords

Microfluidics
Semiconducting
Separation
Single-wall carbon nanotubes

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10.1166/jnn.2007.830

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abstract = "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.",

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AU - Mattsson, Mattias

AU - Gromov, Andrei

AU - Dittmer, Staffan

AU - Eriksson, Emma

AU - Nerushev, Oleg A.

AU - Campbell, Eleanor E.B.

PY - 2007/10

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KW - Separation

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Dielectrophoresis-induced separation of metallic and semiconducting single-wall carbon nanotubes in a continuous flow microfluidic system

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Keywords

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