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      Focusing surface plasmons via changing the incident angle

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      Author(s)
      Caglayan, H.
      Bulu, I.
      Özbay, Ekmel
      Date
      2008
      Source Title
      Journal of Applied Physics
      Print ISSN
      0021-8979
      Electronic ISSN
      1089-7550
      Publisher
      AIP Publishing LLC
      Volume
      103
      Issue
      5
      Pages
      053105-3 - 053105-1
      Language
      English
      Type
      Article
      Item Usage Stats
      233
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      230
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      Abstract
      We report a circular metallic aperture with a subwavelength circular slit in the microwave regime, in which we experimentally demonstrate that this aperture can excite and focus surface plasmons. Under normal illumination, there is no focusing of the surface plasmons. However, by changing the incident angle, it is possible to focus surface plasmons. We showed that under a 20° illumination angle surface plasmons focus at 4 cm away from the center on the surface of the aperture. © 2008 American Institute of Physics.
      Permalink
      http://hdl.handle.net/11693/23163
      Published Version (Please cite this version)
      https://doi.org/10.1063/1.2844552
      Collections
      • Department of Electrical and Electronics Engineering 4011
      • Department of Physics 2550
      • Institute of Materials Science and Nanotechnology (UNAM) 2258
      • Nanotechnology Research Center (NANOTAM) 1179
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