Dielectrophoretic behavior of ionic surfactant-solubilized carbon nanotubes

Zhi Bin Zhang, Shi Li Zhang, Eleanor E.B. Campbell

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


The deposition of carbon nanotubes (CNTs), suspended in aqueous sodium dodecylbenzene sulfonate (SDBS) solution, to predefined microelectrodes using alternating current dielectrophoresis is found to strongly depend on the frequency and SDBS concentration. The deposition rate of CNTs increases with increasing frequency. At high SDBS concentrations, the alignment of CNTs between electrode pairs is only achievable at high frequencies above 1 MHz. The morphology of the deposited CNTs relative to the electrodes varies with the SDBS concentration. The experimental observations are discussed by treating the CNTs as a rigid rod.

Original languageEnglish
Pages (from-to)11-15
Number of pages5
JournalChemical Physics Letters
Issue number1-3
StatePublished - 3 Apr 2006

Bibliographical note

Funding Information:
This work was supported by the Swedish Research Council (VR) (No. 621-2002-4099).


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