What question did this study set out to answer?

The aim is to measure the size and concentration of gold nanoparticles using a fiber-optic interferometer.

May 29, 2026Sensors and Actuators A Physical0 citationsOpen Access

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

VAVid AgrežUniversity of Ljubljana JKJulij KramarUniversity of Ljubljana RPRok PetkovšekUniversity of Ljubljana

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. (Fri,) studied this question.

synapsesocial.com/papers/6a192cd5fab5b468c4415967 https://doi.org/https://doi.org/10.1016/j.sna.2026.118046

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