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Applied Physics Letters / Volume 96 / Issue 26 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 96, 261108 (2010); http://dx.doi.org/10.1063/1.3460273 (3 pages)

Nanopyramid surface plasmon resonance sensors

Pei-Yu Chung1, Tzung-Hua Lin2, Gregory Schultz3, Christopher Batich1, and Peng Jiang2

1Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611, USA
2Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, USA
3Department of Obstetrics and Gynecology, University of Florida, Gainesville, Florida 32611, USA

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(Received 19 April 2010; accepted 13 June 2010; published online 1 July 2010)

We report the achievement of sensitive chemical and biological sensing using periodic gold nanopyramids with nanoscale sharp tips created by a simple and scalable colloidal templating approach. The sharp tips and the long-range periodic structure of the nanopyramid arrays enable the excitement of both localized and propagating surface plasmons. The optical reflection and the detection sensitivity of the templated nanopyramid surface plasmon resonance sensors agree reasonably well with the theoretical predictions using a finite-difference time-domain model. We have also demonstrated that specific antigen-antibody binding can be detected by using nanopyramid arrays in a real-time and label-free manner.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

biosensors, finite difference time-domain analysis, gold, nanobiotechnology, nanosensors, surface plasmon resonance

PACS

  • 87.85.Rs

    Nanotechnologies-applications

  • 87.80.-y

    Biophysical techniques (research methods)

  • 85.85.+j

    Micro- and nano-electromechanical systems (MEMS/NEMS) and devices

  • 07.07.Df

    Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3460273

PUBLICATION DATA

ISSN

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

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    X. N. Shan, K. J. Foley, and N. J. Tao, Appl. Phys. Lett. 92, 133901 (2008)APPLAB000092000013133901000001.

    F. Eftekhari, R. Gordon, J. Ferreira, A. G. Brolo, and D. Sinton, Appl. Phys. Lett. 92, 253103 (2008)APPLAB000092000025253103000001.

    L. I. Deych, M. V. Erementchouk, and A. A. Lisyansky, Phys. Rev. B 69, 075308 (2004).


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