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Strong magnetoelectric coupling in multiferroic BiFeO3–Pb(Zr0.52Ti0.48)O3 composite films derived from electrophoretic deposition
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Simulation of a plasmonic tip-terminated scanning nanowire waveguide for molecular imaging

Appl. Phys. Lett. 93, 193101 (2008); doi:10.1063/1.3013816

Published 10 November 2008

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Nathan P. Malcolm,1 Alex J. Heltzel,2 Konstantin V. Sokolov,3 Li Shi,1 and John R. Howell1
1Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, USA
2PC Krause & Associates, West Lafayette, Indiana 47906, USA
3Department of Biomedical Engineering, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, USA
Finite difference time domain simulation reveals plasmon coupling and local field enhancement at the gap between the gold nanoparticle (NP) tip of a ZnO nanowire (NW) waveguide and a gold-coated substrate or a gold NP probe. The region of field enhancement is about three times smaller than the 100 nm diameter of the gold NP tip, making the NW waveguide grown on a transparent microcantilever well-suited for near field imaging of single molecules immobilized on a gold substrate or gold NP-labeled cell membranes with superior spatial resolution and signal to noise ratio. ©2008 American Institute of Physics
History: Received 19 May 2008; accepted 14 October 2008; published 10 November 2008
Permalink: http://link.aip.org/link/?APPLAB/93/193101/1
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KEYWORDS and PACS

Keywords
PACS
  • 68.65.La
    Quantum wires patterned in quantum wells (structure and nonelectronic properties)
  • 61.46.Km
    Structure of nanowires and nanorods
  • YEAR: 2008

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0003-6951 (print)   1077-3118 (online)
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