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Real-time dynamic sensing with an on-chip nanophotonic sensor
Optics Express
|August 10, 2017
Summary
This study presents a novel nanophotonic sensor for real-time fluid flow monitoring. The silicon photonic crystal sensor accurately detects fluid composition changes, showing great potential for advanced fluid analysis.
Area of Science:
- Nanophotonics
- Microfluidics
- Optical Sensing
Background:
- Real-time monitoring of fluid flows is crucial in various scientific and industrial applications.
- Existing methods may lack the sensitivity or real-time capabilities required for dynamic fluid analysis.
Purpose of the Study:
- To develop and demonstrate a nanophotonic sensor for real-time monitoring of fluid flows.
- To validate the sensor's performance using a silicon photonic crystal cavity and a microfluidic channel.
Main Methods:
- Fabrication of a silicon photonic crystal cavity integrated with a microfluidic channel.
- Simulation and experimental measurement of resonant wavelength shifts due to fluid composition.
- Dynamic sensing experiments using controlled ratios of water and oil delivered via syringe pump.
Main Results:
- The sensor demonstrated a simulated resonant wavelength shift of 9.0 nm and an experimental shift of 10.0 nm with residual oil.
- Excellent agreement was observed between sensor measurements and visual data of fluidic streams.
- The sensor successfully monitored alternating fluid deliveries of water and oil.
Conclusions:
- The developed nanophotonic sensor enables accurate real-time monitoring of fluid flows.
- The sensor shows high sensitivity to changes in fluid composition.
- This technology holds promise for applications requiring precise fluid analysis and control.
