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New trends in plasmonic (bio)sensing.

Jorge R Mejía-Salazar1, Sabrina A Camacho2, Carlos J L Constantino2

  • 1Universidade de São Paulo, São Paulo, São Paulo, Brazil.

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|May 10, 2018
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Summary
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Plasmonic systems enhance electromagnetic fields for advanced sensing. This review covers surface plasmon resonance (SPR) and surface-enhanced Raman scattering (SERS) for ultrasensitive detection of biological and chemical analytes.

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Area of Science:

  • Plasmonics and Nanotechnology
  • Sensor Technology
  • Biomedical Engineering

Background:

  • Plasmonic systems offer strong electromagnetic field enhancement and localization.
  • These properties are crucial for applications in sensing and biosensing.
  • Current limitations in ultrasensitive detection necessitate improved sensor technologies.

Purpose of the Study:

  • To provide an overview of plasmonic phenomena in sensors and biosensors.
  • To highlight methods for enhancing sensor performance.
  • To discuss advancements in surface plasmon resonance (SPR) and surface-enhanced Raman scattering (SERS) for sensing.

Main Methods:

  • Review of functionalized magnetic nanoparticles for SPR sensing.
  • Exploration of magnetoplasmonic effects for enhanced SPR.
  • Investigation of metamaterials in SPR sensing.
  • Development of uniform, flexible, and reproducible SERS substrates.

Main Results:

  • Demonstrated enhancement strategies for SPR-based sensors.
  • Showcased advancements in SERS substrates for improved reproducibility.
  • Identified potential for overcoming detection limits in chemical and biological sensing.

Conclusions:

  • Plasmonic phenomena offer significant potential for improving sensor and biosensor sensitivity.
  • Developments in SPR and SERS pave the way for ultrasensitive detection, including at the single-molecule level.
  • Further research can overcome current limitations in detecting trace chemical and biological analytes.