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Updated: Dec 13, 2025
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Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
Published on: March 22, 2019
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Tunable Infrared Metamaterial Emitter for Gas Sensing Application.
1State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510275, China.
Nanomaterials (Basel, Switzerland)
|July 30, 2020
Summary
We developed a tunable infrared metamaterial emitter using microelectromechanical systems (MEMS) for sensitive gas detection. This device offers wavelength-selective emission, crucial for advanced sensing applications.
Area of Science:
- Optoelectronics
- Metamaterials Science
- Nanotechnology
Background:
- Infrared (IR) emitters are crucial for gas sensing.
- Existing emitters often lack tunability and narrow bandwidth.
- Integration of microelectromechanical systems (MEMS) and metamaterials offers potential for improved performance.
Purpose of the Study:
- To present an on-chip tunable IR metamaterial emitter for gas sensing.
- To achieve high electrical-thermal-optical efficiency.
- To enable wavelength-selective and narrow-band IR emission.
Main Methods:
- Integration of MEMS microheaters with a Peano-shaped microstructure and IR metamaterial layers.
- Application of Direct Current (DC) bias voltage to generate IR radiation.
- Tailoring metamaterial patterns to tune emission wavelengths based on deformation ratios.
Main Results:
- Achieved high electrical-thermal-optical efficiency.
- Demonstrated wavelength-selective, narrow-band IR emission around 2.44 µm (FWHM 0.38 µm).
- Maximum radiated power reached 85.0 µW.
Conclusions:
- The proposed device offers a strategy for tunable IR emission.
- The emitter is suitable for high-sensitivity gas sensing applications.
- This work paves the way for electro-thermal-optical devices in IR sensing, emission, and switching.
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