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Published on: August 30, 2012
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Noninvasive and real-time plasmon waveguide resonance thermometry
Pengfei Zhang1,2, Le Liu3, Yonghong He4,5
1Shenzhen Key Laboratory for Minimal Invasive Medical Technologies, Institute of optical imaging and sensing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China. zhangpf14@mails.tsinghua.edu.cn.
Sensors (Basel, Switzerland)
|April 15, 2015
Summary
This study introduces plasmon waveguide resonance (PWR) thermometry for noninvasive, real-time temperature sensing. The PWR thermometer offers high sensitivity and a wide dynamic range, suitable for thermal gradient analysis.
Area of Science:
- Optics and Photonics
- Materials Science
- Nanotechnology
Background:
- Accurate temperature sensing is crucial in various scientific and industrial applications.
- Existing thermometry methods may face limitations in noninvasiveness, real-time monitoring, or dynamic range.
- Plasmonic phenomena offer unique properties for developing novel sensing platforms.
Purpose of the Study:
- To theoretically propose and experimentally demonstrate a noninvasive, real-time plasmon waveguide resonance (PWR) thermometry system.
- To investigate the performance characteristics of the PWR thermometer, including sensitivity and dynamic range.
- To explore the potential applications of PWR thermometry in areas like thermal gradient analysis.
Main Methods:
- Theoretical modeling of plasmon waveguide resonance for thermometry.
- Experimental fabrication of a PWR thermometer utilizing a dielectric layer for enhanced evanescent field and thermal shielding.
- Real-time temperature measurements during water cooling processes to assess performance.
Main Results:
- Demonstration of noninvasive and real-time temperature sensing using PWR.
- Achieved a high temperature measurement sensitivity of 9.4 × 10(-3) °C.
- Successfully measured thermo-optic coefficient nonlinearity and analyzed one-dimensional cooling processes.
Conclusions:
- The PWR thermometer provides accurate, real-time temperature sensing with a wide dynamic range.
- The technology is cost-effective and structurally simple, using conventional optical components.
- PWR thermometry shows significant potential for applications in thermal gradient analysis and other fields requiring precise temperature monitoring.
