Communication: Advanced Optical Materials

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Large-Area Low-Cost Plasmonic Nanostructures in the NIR for Fano Resonant Sensing

  1. Jun Zhao1,
  2. Chunjie Zhang2,
  3. Paul V. Braun2,
  4. Harald Giessen1,*

Article first published online: 16 JUL 2012

DOI: 10.1002/adma.201202109

Issue

Advanced Materials

Advanced Materials

Volume 24, Issue 35, pages OP247–OP252, September 11, 2012

Additional Information

How to Cite

Zhao, J., Zhang, C., Braun, P. V. and Giessen, H. (2012), Large-Area Low-Cost Plasmonic Nanostructures in the NIR for Fano Resonant Sensing. Adv. Mater., 24: OP247–OP252. doi: 10.1002/adma.201202109

Author Information

  1. 1

    4. Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany

  2. 2

    Department of Materials Science and Engineering, University of Illinois at Urbana Champaign, Urbana, Illinois 61801, USA

*4. Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.

Publication History

  1. Issue published online: 4 SEP 2012
  2. Article first published online: 16 JUL 2012
  3. Manuscript Revised: 18 JUN 2012
  4. Manuscript Received: 25 MAY 2012

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Keywords:

  • plasmonics;
  • metamaterials;
  • Fano resonances;
  • sensors;
  • colloidal nanolithography
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Large-area low-cost plasmonic nanostructures with high-quality Fano resonances have been fabricated for the first time. Hole-mask colloidal nanolithography is utilized and the degree of asymmetry of double split-ring resonators is varied to optimize the modulation depth of the Fano resonances for refractive index sensing. In situ optical spectroscopy during thermal annealing monitors the spectral change to control improvement of sample quality. Liquids with different refractive indices yield experimental sensitivities of up to 520 nm/RIU and figures of merit of 2.9.

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