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Related Experiment Video

Updated: Apr 18, 2026

Dry Film Photoresist-based Electrochemical Microfluidic Biosensor Platform: Device Fabrication, On-chip Assay Preparation, and System Operation
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Fast and cost-effective fabrication of large-area plasmonic transparent biosensor array.

R Intartaglia1, S Beke, M Moretti

  • 1Nanophysics, Istituto Italiano di Tecnologia, via Morego, 30, 16163 Genova, Italy. romuald.intartaglia@iit.it.

Lab on a Chip
|January 16, 2015
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Summary

We developed a new, cost-effective method to create large, transparent sensors for chemical and biological analysis. These affordable sensors offer high sensitivity for medical and environmental applications.

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Area of Science:

  • Nanotechnology
  • Spectroscopy
  • Materials Science

Background:

  • Surface-enhanced Raman scattering (SERS) sensors are crucial for chemical and biological analysis.
  • Current SERS sensors face limitations including high cost, long production times, toxicity, small sensing areas, and opacity.
  • These limitations hinder their widespread adoption in medical and environmental fields.

Purpose of the Study:

  • To present a novel, cost-effective method for fabricating large-area, transparent SERS sensor arrays.
  • To overcome the limitations of existing SERS sensor technologies.
  • To enable advanced optical analysis in biomedical and environmental applications.

Main Methods:

  • Utilized a fast, laser-based fabrication technique.
  • Created periodic arrays of ligand-free metallic nanoparticles.
  • Fabricated large-area, transparent, and reusable sensor substrates.

Main Results:

  • Achieved a remarkable picomolar detection limit using Raman scattering.
  • Demonstrated a superior signal-to-noise ratio compared to conventional sensor substrates.
  • Developed affordable, large-area, and transparent plasmonic devices.

Conclusions:

  • The developed fabrication method is fast, cheap, and produces reusable sensors.
  • The high sensitivity and transparency of the sensors are suitable for in situ multimodal optical analysis.
  • This advancement opens new possibilities for broad applications in the biomedical and analytical fields.