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Updated: Jan 25, 2026

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Plasmonics for Biosensing.

Xue Han1, Kun Liu2, Changsen Sun3

  • 1School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China. xue_han@dlut.edu.cn.

Materials (Basel, Switzerland)
|May 5, 2019
PubMed
Summary

Plasmonic biosensors using nanovoids in thin films offer label-free, real-time detection of biomolecules. These advanced sensors show great promise for sensitive, selective, and multi-analyte monitoring in next-generation point-of-care devices.

Keywords:
biosensinghybrid functionmulti-channel sensingplasmonic materialsplasmonicsresonance modesspectroelectrochemistry

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Area of Science:

  • Plasmonics and Nanotechnology
  • Biosensing
  • Molecular Diagnostics

Background:

  • Plasmonic resonance techniques enable label-free, signal-enhanced, real-time molecular-level sensing.
  • Advancements in nanofabrication and material science have driven plasmonics research using nanoparticles and nano-patterns.
  • Nanovoid-containing thin films represent a promising platform for plasmonic biosensor development.

Purpose of the Study:

  • To review resonance modes, materials, and hybrid functions in plasmonic biosensing techniques specifically for nanovoid designs.
  • To highlight the potential of these nanovoid-based plasmonic biosensors for integrated lab-on-a-chip applications.

Main Methods:

  • Review of existing literature on plasmonic resonance phenomena.
  • Analysis of materials and fabrication techniques for nanovoid structures in thin films.
  • Exploration of hybrid functionalities combining plasmonics with electrical conductivity.

Main Results:

  • Nanovoid-based plasmonic biosensors demonstrate significant potential for high sensitivity and selectivity.
  • These sensors facilitate real-time, multi-channel detection of minute bio-analytes.
  • Integration into lab-on-a-chip systems is feasible for dynamic monitoring.

Conclusions:

  • Plasmonic biosensors with nanovoid designs offer a powerful platform for advanced molecular detection.
  • They are well-suited for developing next-generation point-of-care devices with integrated capabilities.
  • The combination of plasmonics and electrical conductivity in nanovoid structures enhances biosensing performance.