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Development of an integrated optic oxygen sensor using a novel, generic platform.

Conor S Burke1, Orla McGaughey, Jean-Marc Sabattié

  • 1National Centre for Sensor Research, School of Physical Sciences, Dublin City University, Dublin 9, Ireland.

The Analyst
|December 23, 2004
PubMed
Summary

Researchers developed a versatile platform for integrated optic sensors using fluorescence detection. This novel system demonstrates enhanced performance and multianalyte capabilities, successfully detecting gaseous oxygen with high sensitivity.

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Area of Science:

  • Optoelectronics
  • Chemical Sensing
  • Materials Science

Background:

  • Integrated optic sensors offer miniaturization and multiplexing potential for chemical detection.
  • Fluorescence-based sensing provides high sensitivity and selectivity for various analytes.
  • Developing a generic platform enables adaptable sensor design for diverse applications.

Purpose of the Study:

  • To develop a generic platform for enhanced, integrated optic sensors utilizing fluorescence detection.
  • To demonstrate the platform's capability for multianalyte detection and enhanced performance.
  • To validate the platform's efficacy through the detection of gaseous oxygen.

Main Methods:

  • Fabrication of a multimode ridge waveguide patterned with an analyte-sensitive fluorescent spot.

Related Experiment Videos

  • Direct excitation of the fluorescent spot using a light-emitting diode (LED).
  • Utilizing sol-gel derived sensor spots doped with a dichlororuthenium dye complex for oxygen sensing.

    • Main Results:

    • Achieved a limit of detection (LOD) of 0.62% for gaseous oxygen.
    • Demonstrated a resolution of less than 0.96% for gaseous oxygen detection.
    • Generated intensity-based calibration data from oxygen-dependent waveguide output.

    Conclusions:

    • The developed platform offers enhanced performance and inherent multianalyte detection capabilities.
    • The combination of inexpensive prototyping and sensor enhancement strategies yields effective prototype sensors.
    • This approach facilitates the creation of adaptable and high-performance integrated optic sensors.