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Highly Sensitive Photothermal Fiber Sensor Based on MXene Device and Vernier Effect.
Qing Wu1, Si Chen2, Lixin Guan2
1Heilongjiang Province Key Laboratory of Laser Spectroscopy Technology and Application, Harbin University of Science and Technology, Harbin 150080, China.
Nanomaterials (Basel, Switzerland)
|March 10, 2022
Summary
This study introduces a novel photothermal fiber sensor using MXene-modified microfiber knot resonators (MKR) and the Vernier effect. This innovative sensor significantly enhances sensitivity for broader applications.
Area of Science:
- Optical Fiber Sensing
- Nanomaterials
- Photothermal Devices
Background:
- Microfiber knot resonators (MKR) are sensitive optical components.
- MXene Ti3C2Tx nanosheets offer unique photothermal properties.
- Enhancing optical fiber sensor sensitivity is crucial for advanced applications.
Purpose of the Study:
- To develop a novel photothermal fiber sensor using MXene-Ti3C2Tx modified MKR.
- To leverage the Vernier effect for sensitivity amplification.
- To demonstrate the potential of MXene in photothermal fiber sensing.
Main Methods:
- Fabrication of an MXene-MKR photothermal device via optical deposition.
- Integration of MXene-MKR and bare MKR into a Vernier-cascade system.
- Characterization of optical and photothermal properties of the sensor system.
Main Results:
- The MXene-MKR exhibited a modulation efficiency of 0.02 nm/mW.
- The Vernier-cascade system achieved a modulation efficiency of 0.15 nm/mW.
- Sensitivity was amplified 7.5 times compared to the bare MKR.
Conclusions:
- MXene Ti3C2Tx modification provides a new pathway for enhancing optical fiber sensor sensitivity.
- The developed all-fiber photothermal sensor is cost-effective, compact, and compatible.
- This technology offers promising solutions for various sensing applications.
