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  • 1Institute of Smart Cities, Public University of Navarre, 31006, Pamplona, Spain.

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Summary
This summary is machine-generated.

This study presents a novel dual-parameter sensor using a nanocoated microscope coverslip. The device can simultaneously detect temperature and humidity, paving the way for advanced multi-parameter sensing applications.

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Area of Science:

  • Nanophotonics
  • Optical Sensing
  • Waveguide Technology

Background:

  • Microscope slides with thin films can support dual resonances for each light polarization (TE and TM).
  • This waveguide structure offers potential for simultaneous multi-parameter detection through differential surface coatings.

Purpose of the Study:

  • To demonstrate a dual-parameter sensor based on a dually nanocoated waveguide.
  • To explore the simultaneous detection of temperature and humidity using specific coatings.
  • To optimize the sensor for operation in both visible and near-infrared (NIR) spectral regions.

Main Methods:

  • Utilizing a glass coverslip with thin film deposition on both faces to create a nanocoated waveguide.
  • Applying polydimethylsiloxane and agarose coatings to detect temperature and humidity, respectively.
  • Optimizing the waveguide structure to achieve resonances in both visible and NIR spectra.

Main Results:

  • Successfully demonstrated simultaneous detection of temperature and humidity.
  • Achieved sensitivities of 0.34 nm/°C and 0.23 nm/%RH in the visible region.
  • Reported sensitivities of 1.16 nm/°C and 0.34 nm/%RH in the NIR region.

Conclusions:

  • The dually nanocoated waveguide is a viable platform for dual-parameter sensing.
  • The sensor can operate effectively in both visible and NIR spectral ranges.
  • This technology enables the development of multi-resonance sensors for detecting various parameters.