Dielectrophoretic assembly of nanowires

Yaling Liu, Jae Hyun Chung, Wing K Liu*, Rodney S. Ruoff

*Corresponding author for this work

Research output: Contribution to journalArticle

159 Scopus citations

Abstract

Nanowire (NW) assembly is currently of great interest, partly because NWs are considered as a fundamental component in the fabrication of a variety of devices. A powerful method has been developed to model the assembly of NWs. The three-dimensional dielectrophoretic (DEP) assembly of NWs across opposing electrodes is, for the first time, comprehensively studied using this new method. It is found that the DEP force reaches a maximum when the ratio of gap size to NW length is in the range 0.85-1.0. Both the magnitude and sign of the DEP torque on each NW varies with this ratio, and also with the orientation angle and the geometry and configuration of the electrode. The simulation of the dynamic assembly of individual and bundled NWs agrees with experiment. This method is of sufficient power that it will be of direct use in modeling DEP-based assembly and thus the manufacturing of nanoelectronic devices.

Original languageEnglish (US)
Pages (from-to)14098-14106
Number of pages9
JournalJournal of Physical Chemistry B
Volume110
Issue number29
DOIs
StatePublished - Jul 27 2006

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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