Electric field and charged molecules mediated self-assembly for electronic devices

Sang Woo Lee, Helen A. McNally, Rashid Bashir

Research output: Contribution to journalConference articlepeer-review


In this paper we present techniques, utilizing dielectrophoresis and electrohydrodynamics, which can possibly be used for assembling devices suspended in a solution onto a binding site on a substrate. We explored the concepts using micro-scale negatively charged polystyrene beads and rectangular silicon blocks. Dielectrophoretic forces on devices in buffer solutions were examined as a function of frequency of the applied AC signal. The observed results can be explained by taking in account electro-thermal and AC electroosmotic effects. The study described in the paper can be used for placing and assembling micro and nano-electronic devices and objects at specific sites on various substrates, in combination with bio-inspired biological binding techniques such as DNA hybridization, antigen-antibody interactions, and ligand-receptor (avidin-biotin) interactions.

Original languageEnglish (US)
Pages (from-to)49-53
Number of pages5
JournalMaterials Research Society Symposium - Proceedings
StatePublished - 2003
Externally publishedYes
EventBioinspired Nanoscale Hybrid Systems - Boston, MA, United States
Duration: Dec 2 2002Dec 4 2002

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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