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Translation of nanoantenna hot spots by a metal-dielectric composite superlens

Appl. Phys. Lett. 95, 033114 (2009); doi:10.1063/1.3176975

Published 23 July 2009

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Zhengtong Liu (刘政通), Mark D. Thoreson, Alexander V. Kildishev, and Vladimir M. Shalaev
School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA
We employ numerical simulations to show that highly localized, enhanced electromagnetic fields, also known as “hot spots,” produced by a periodic array of silver nanoantennas can be spatially translated to the other side of a metal-dielectric composite superlens. The proposed translation of the hot spots enables surface-enhanced optical spectroscopy without the undesirable contact of molecules with metal, and thus it broadens and reinforces the potential applications of sensing based on field-enhanced fluorescence and surface-enhanced Raman scattering. ©2009 American Institute of Physics
History: Received 12 May 2009; accepted 22 June 2009; published 23 July 2009
Permalink: http://link.aip.org/link/?APPLAB/95/033114/1
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KEYWORDS and PACS

Keywords
PACS
  • 84.40.Ba
    Antennas: theory, components and accessories
  • YEAR: 2009

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