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Related Experiment Video

Updated: Jun 19, 2026

Trapping of Micro Particles in Nanoplasmonic Optical Lattice
07:20

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Published on: September 5, 2017

Self-assembled plasmonic nanohole arrays.

Si Hoon Lee1, Kyle C Bantz, Nathan C Lindquist

  • 1Department of Biomedical Engineering, 312 Church Street SE, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA.

Langmuir : the ACS Journal of Surfaces and Colloids
|October 17, 2009
PubMed
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We developed a simple nanofabrication method for large-area, tunable nanohole arrays in metal films. These arrays offer significant enhancement for surface-enhanced Raman spectroscopy (SERS) and biosensing applications.

Area of Science:

  • Nanofabrication
  • Plasmonics
  • Spectroscopy

Background:

  • Producing large-area, defect-free nanohole arrays is challenging.
  • Existing methods lack tunability in hole shape, diameter, and periodicity.
  • Subwavelength periodic nanostructures are crucial for plasmonic applications.

Purpose of the Study:

  • To present a simple, massively parallel nanofabrication technique for self-assembled periodic nanohole arrays.
  • To demonstrate tunable properties of nanohole arrays (shape, diameter, periodicity).
  • To evaluate the potential of these arrays for surface-enhanced Raman spectroscopy (SERS) and biosensing.

Main Methods:

  • Massively parallel self-assembly nanofabrication of periodic nanohole arrays in metallic films.
  • Characterization of nanohole arrays using optical transmission spectra and FDTD simulations.

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Last Updated: Jun 19, 2026

Trapping of Micro Particles in Nanoplasmonic Optical Lattice
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Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Published on: September 5, 2017

Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography
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Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography

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09:29

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Published on: September 27, 2011

  • Evaluation of surface-enhanced Raman spectroscopy (SERS) enhancement factors (EFs) with varying parameters and an additional plating step.

    • Main Results:

    • Achieved 30 x 30 µm² defect-free nanohole arrays with tunable characteristics (≤300 nm diameter).
    • Demonstrated highly homogeneous optical transmission spectra across millimeter-sized areas.
    • Obtained SERS enhancement factors (EFs) of 10⁴–10⁶, increased to 3 x 10⁶ with Ag plating.

    Conclusions:

    • The developed self-assembly method enables cost-effective fabrication of large-area, tunable nanohole arrays.
    • These nanohole arrays exhibit strong electric field confinement, suitable for SERS.
    • The arrays show significant promise as inexpensive SERS substrates and surface plasmon resonance biosensing platforms.