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May 29, 2026Sensors and Actuators A Physical0 citationsOpen Access

Multi wavelength measuring of the gold nanoparticles by the optical fiber interferometer

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VAVid AgrežJKJulij KramarRPRok Petkovšek

Key Points

  • The aim is to measure the size and concentration of gold nanoparticles using a fiber-optic interferometer.
  • Utilized a fiber-optic Mach-Zehnder sensor for measurement.
  • Implemented a dual-wavelength approach for simultaneous detection.
  • Achieved a detection limit of 8×10⁶ particles/mL for 100 nm gold nanoparticles.
  • Demonstrated effective size discrimination of gold nanoparticles via absorption ratio.
  • Achieved successful real-time monitoring with a robust all-fiber design.

Abstract

• Fiber-optic Mach-Zehnder sensor for photothermal nanoparticle detection • Dual-wavelength approach enables simultaneous size and concentration measurement • Detection limit of 8×10⁶ particles/mL achieved for 100 nm gold nanoparticles • Gold nanoparticle size discrimination achieved via absorption ratio • Robust all-fiber design enables field deployment and real-time monitoring

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Cite This Study

Agrež et al. (2026) studied this question.

synapsesocial.com/papers/6a192cd5fab5b468c4415967https://doi.org/10.1016/j.sna.2026.118046
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