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Eye-Resolvable Surface-Plasmon-Enhanced Fluorescence Temperature Sensor.

Luping Tang1,2, Yangyang Zhang1, Chen Liao3

  • 1College of Mechanical and Electrical Engineering, Nanjing Forestry University, Nanjing 210037, China.

Nanomaterials (Basel, Switzerland)
|November 26, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a novel fluorescence temperature sensor using nanoparticle films. It offers precise, eye-resolvable temperature detection across a wide range, improving accuracy and stability for various applications.

Keywords:
Ag@SiO2@CdS/ZnS composite nanoparticlefluorescencepeak intensitypeak wavelengthtemperature sensor

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Optical Sensors

Background:

  • Traditional temperature sensors (thermocouples, thermal resistances, infrared) have limitations in accuracy, range, and application environments.
  • Developing advanced temperature sensors is crucial for fields like medical care and aerospace.
  • Existing sensors struggle with precise low-temperature measurement and self-calibration.

Purpose of the Study:

  • To develop an advanced, eye-resolvable temperature sensor with enhanced sensitivity and accuracy.
  • To utilize surface plasmon-enhanced fluorescence in a dual-emission nanoparticle system for temperature sensing.
  • To enable multi-parameter detection for improved measurement reliability and self-calibration.

Main Methods:

  • Fabrication of a dual-emission Ag@SiO2@CdS/ZnS composite nanoparticle film.
  • Characterization of the sensor's optical properties, including chromaticity coordinates and photoluminescence (PL).
  • Analysis of the temperature-dependent ratiometric PL response and surface state emission.

Main Results:

  • The sensor exhibited eye-resolvable surface plasmon-enhanced fluorescence with chromaticity shifts from 77-297 K.
  • A ratiometric PL response showed significant temperature dependence with a thermal sensitivity of 1.4% K⁻¹.
  • Surface state emission intensity demonstrated a linear relationship with temperature (Adj. R-Square of 99.8%).

Conclusions:

  • The developed nanoparticle-based sensor provides accurate, multi-parameter temperature detection with high sensitivity.
  • The sensor demonstrates stability and reproducibility, capable of detecting low temperatures.
  • Independent temperature estimates facilitate self-calibration, enhancing measurement precision.