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Published on: November 7, 2016
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Optical fiber temperature sensor utilizing alloyed Zn(x)Cd(1-x)S quantum dots.
Journal of Nanoscience and Nanotechnology
|May 5, 2015
Summary
Alloyed Zn(x)Cd(1-x)S quantum dots on optical fibers create effective temperature sensors. Silica encapsulation enhances photoluminescence intensity, sensitivity, and thermal stability for reliable optical fiber temperature sensing.
Area of Science:
- Materials Science
- Nanotechnology
- Optical Engineering
Background:
- Optical fiber sensors offer advantages in harsh environments.
- Quantum dots (QDs) exhibit unique photoluminescent properties sensitive to environmental changes.
- Developing robust QD-based optical fiber temperature sensors is crucial for various applications.
Purpose of the Study:
- To fabricate optical fiber temperature sensors using alloyed Zn(x)Cd(1-x)S quantum dots.
- To investigate the effect of silica encapsulation on sensor performance.
- To establish the relationship between photoluminescence intensity and temperature.
Main Methods:
- Silanization of optical fiber surface for enhanced QD bonding.
- Sol-gel coating using GPTMS and APTMS for QD encapsulation.
- Utilizing green, yellow, and red fluorescent alloyed QDs.
- Measuring photoluminescence intensity dependence on temperature.
Main Results:
- Successful immobilization of alloyed Zn(x)Cd(1-x)S QDs on optical fibers.
- A linear relationship was observed between photoluminescence intensity and temperature.
- Silica encapsulation significantly improved PL intensity, sensitivity, and thermal stability.
Conclusions:
- Alloyed Zn(x)Cd(1-x)S QDs are suitable for optical fiber temperature sensing.
- Silica encapsulation enhances the performance and stability of these sensors.
- The developed sensors demonstrate potential for accurate temperature monitoring.
