Numerical analysis of nanotube-based NEMS devices - Part I: Electrostatic charge distribution on multiwalled nanotubes

Changhong Ke*, Horacio D. Espinosa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

72 Scopus citations

Abstract

The charge distribution on the surface of a biased conductive, finite-length, cylindrical nanotube, free standing above an infinite grounded plane, is investigated. The diameter range of the cylinder tube under study is 20-60 nm, which is much larger than the screening length, meaning the quantum and statistical effects on the charge distribution are negligible. The relationship between the charge distribution and the geometry of the nanotube is examined in detail by classical electrostatics using full three-dimensional numerical simulations based on the boundary element method. A model of the concentrated charge at the end of nanotubes is proposed. The charge distribution for a clamped cantilever nanotube is also computed and discussed. The findings here reported are of particular usefulness in the design and modeling of electrostatic actuated nanotube/nanowire based nano-electromechanical systems.

Original languageEnglish (US)
Pages (from-to)721-725
Number of pages5
JournalJournal of Applied Mechanics, Transactions ASME
Volume72
Issue number5
DOIs
StatePublished - Sep 2005

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Numerical analysis of nanotube-based NEMS devices - Part I: Electrostatic charge distribution on multiwalled nanotubes'. Together they form a unique fingerprint.

Cite this