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Related Experiment Video

Updated: Feb 20, 2026

Author Spotlight: Development and Application of SERS Flexible Substrates Using Synthesized AgNPs
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Fabrication of Plasmonically Active Substrates Using Engineered Silver Nanostructures for SERS Applications.

Menekse Sakir1, Sami Pekdemir1, Ahmet Karatay2

  • 1Department of Materials Science and Engineering, Nanotechnology Research Center (ERNAM), Erciyes University , 38039 Kayseri, Turkey.

ACS Applied Materials & Interfaces
|October 20, 2017
PubMed
Summary

We developed a scalable method to grow silver nanostructures on substrates using gold nanoparticle seeds. This technique enhances plasmonic activity for applications in sensing and biotechnology.

Keywords:
SERShydroquinoneplasmonicsseed-mediated synthesissilver nanostructures

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Surface Chemistry

Background:

  • Plasmonically active substrates are crucial for advanced applications like sensing, metasurfaces, catalysis, and biotechnology.
  • Existing methods for fabricating these substrates can be complex and lack scalability.

Purpose of the Study:

  • To present a versatile, scalable, bottom-up approach for fabricating plasmonically active substrates.
  • To demonstrate the direct growth of silver nanostructures from immobilized seed particles on polymer brush-grafted surfaces.

Main Methods:

  • Uniform assembly of citrate-stabilized gold nanoparticles (seeds) on poly(ethylene glycol) brushes.
  • Selective growth of silver nanostructures using hydroquinone as a reducing agent, confined to seed particle locations.
  • Optimization of seed diameter, reactant concentrations, ratios, and growth duration for large-area coverage.

Main Results:

  • Achieved large-area growth of silver nanostructures with high surface coverage and tunable plasmonic properties.
  • Demonstrated high surface-enhanced Raman scattering (SERS) activity, enabling molecule detection at concentrations as low as 10 pM.
  • Verified plasmonic properties using ultrafast pump-probe spectroscopy and fabricated spatially defined nanostructures via soft lithography.

Conclusions:

  • The presented method offers a scalable and versatile route to plasmonically active substrates.
  • The fabricated silver nanostructures show significant potential for sensitive detection and device applications.
  • This approach facilitates the integration of plasmonic materials into various technological fields.