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Real-Time Electrical Characterization of Dielectrophoretic Assembly of Multi-Walled Carbon Nanotubes
Published online by Cambridge University Press: 01 February 2011
Abstract
This paper reports on a real-time monitoring method for the assembly of a small number of metallic carbon nanotubes (CNTs) by dielectrophoresis (DEP). A time-varying impedance model of the electrode gap was developed to evaluate the number of CNTs which span the gap by measuring the simultaneous variation of gap impedance during the DEP process. Sudden decreases of gap impedance signals were detected during the DEP assembly of multi-walled carbon nanotubes (MWNTs) corresponding to assembly of single or multiple tubes across the gap. The method reduces the requirement of scanning electron microscopy (SEM) inspection and could help automate DEP assembly of CNTs.
- Type
- Research Article
- Information
- MRS Online Proceedings Library (OPL) , Volume 1057: Symposium II – Nanotubes and Related Nanostructures , 2007 , 1057-II17-03
- Copyright
- Copyright © Materials Research Society 2008