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Related Experiment Video

Updated: Oct 18, 2025

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
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Photothermal microfluidic-assisted self-cleaning effect for a highly reusable SERS sensor.

Shaojing Liu, Huiqing Zhong, Zongbao Li

    Optics Letters
    |October 1, 2021
    PubMed
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    This study introduces a reusable optofluidic sensor combining surface-enhanced Raman scattering (SERS) with microfluidics for enhanced detection. Its novel self-cleaning mechanism enables cost-effective and efficient sensing applications.

    Area of Science:

    • Optofluidics
    • Surface-Enhanced Raman Scattering (SERS)
    • Microfluidic Systems

    Background:

    • Optofluidic and SERS sensing integration offers enhanced performance and simplified microsystem design.
    • Reusable sensors are crucial for cost-effective analytical techniques.

    Purpose of the Study:

    • To develop a reusable optofluidic SERS sensor with an efficient self-cleaning mechanism.
    • To demonstrate high sensitivity and a significant enhancement factor for chemical detection.

    Main Methods:

    • Integration of a gold nanoisland substrate (AuNIS)-coated fiber into a microfluidic chip.
    • Utilizing optical-to-heat-hydrodynamic energy conversion for photothermal microfluidic-assisted self-cleaning.
    • Experimental and theoretical analysis to validate sensor performance.

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    Last Updated: Oct 18, 2025

    Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
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    Published on: August 30, 2012

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    Thermal Measurement Techniques in Analytical Microfluidic Devices
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    Main Results:

    • Achieved a detection limit as low as 10-13 mol/L.
    • Demonstrated an enhancement factor of 106 for Rhodamine 6G detection.
    • Confirmed efficient self-cleaning capabilities of the optofluidic sensor.

    Conclusions:

    • The developed optofluidic SERS sensor offers portability, simple operation, and high cleaning efficiency.
    • This photothermal microfluidic-assisted self-cleaning approach provides a novel concept for cost-effective and reusable sensors.