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Microfluidics and Nanofluidics

, Volume 4, Issue 1–2, pp 107–116 | Cite as

Nanohole arrays in metal films as optofluidic elements: progress and potential

  • David Sinton
  • Reuven Gordon
  • Alexandre G. Brolo
Review

Abstract

Subwavelength holes in metal films exhibit coupled optical phenomena specific to structure geometry, incident light and properties of the near-surface medium. As optofluidic components, nanohole arrays in metal films present several opportunities. This review provides an overview of the unique optical characteristics of such arrays, with emphasis on their application in the micro and nano-fluidic environment. The majority of contributions in this area have focused on sensor applications, and the results of nanohole array based chemical and biomolecular sensors are reviewed here. Also relevant to on-chip analysis, various field and spectroscopic enhancements achieved with nanohole arrays are discussed. The general benefits and limitations of nanohole arrays for analytical applications are discussed in the context of existing tools. Beyond sensing, particle trapping and other potential optofluidic applications of nanohole arrays are discussed.

Keywords

Optofluidic Nanohole Nanohole array Surface plasmon resonance Sensor Microfluidic Nanofluidic 

Notes

Acknowledgments

The authors are grateful for the financial support of the Natural Sciences and Engineering Research Council (NSERC) of Canada, through discovery research grants. This work was also supported by equipment grants from the Canada Foundation for Innovation (CFI).

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • David Sinton
    • 1
  • Reuven Gordon
    • 2
  • Alexandre G. Brolo
    • 3
  1. 1.Department of Mechanical EngineeringUniversity of VictoriaVictoriaCanada
  2. 2.Department of Electrical and Computer EngineeringUniversity of VictoriaVictoriaCanada
  3. 3.Department of ChemistryUniversity of VictoriaVictoriaCanada

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