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Related Experiment Video

Updated: Jun 28, 2026

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
09:03

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

A new ion sensor based on fiber optics.

F V Bright1, G E Poirier, G M Hieftje

  • 1Department of Chemistry, Indiana University, Bloomington, IN 47405, U.S.A.

Talanta
|February 1, 1988
PubMed
Summary
This summary is machine-generated.

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A novel fiber optic sensor uses Rhodamine 6G dye on a Nafion film to detect ions. It measures fluorescence changes for quantifying quencher and reverser ions in real-time.

Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Optical Sensors

Background:

  • Fiber optic sensors offer sensitive detection methods.
  • Rhodamine 6G is a fluorescent dye with potential for ion sensing.
  • Nafion films provide a stable matrix for immobilizing sensing elements.

Purpose of the Study:

  • To develop a fluorimetric ion sensor using Rhodamine 6G immobilized on a Nafion film.
  • To investigate the sensor's response to various quenching and reverser ions.
  • To establish a method for quantifying ion concentrations based on fluorescence changes.

Main Methods:

  • Immobilization of Rhodamine 6G dye onto a Nafion film.
  • Utilizing fiber optics for fluorescence measurements.
  • Monitoring fluorescence quenching and enhancement kinetics upon ion addition.

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A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

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Last Updated: Jun 28, 2026

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
09:03

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
09:48

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
08:23

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

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Main Results:

  • Rhodamine 6G fluorescence was rapidly quenched by specific metal ions (Co2+, Cr3+, Fe2+, Fe3+, Cu2+, Ni2+, NH4+).
  • The quenching rate correlated with the concentration of quencher ions.
  • Quenching was reversible by adding specific reverser ions (H+, Li+, Na+, K+, Ba2+, Ca2+, Mn2+, Zn2+, Mg2+), with rates dependent on their concentrations.

Conclusions:

  • The developed sensor enables direct determination of quencher ion concentrations via fluorescence quenching.
  • The sensor allows for indirect determination of non-quenching ions by monitoring the fluorescence recovery rate.
  • This fiber optic sensor provides a sensitive and reversible method for ion analysis.