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Related Experiment Video

Updated: Mar 18, 2026

Thermal Measurement Techniques in Analytical Microfluidic Devices

Thermal Measurement Techniques in Analytical Microfluidic Devices

Published on: June 3, 2015

A Novel Microfluidic Flow Rate Detection Method Based on Surface Plasmon Resonance Temperature Imaging.

Shijie Deng¹, Peng Wang², Shengnan Liu³

¹State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China. dsj11@mails.tsinghua.edu.cn.

Sensors (Basel, Switzerland)

|June 28, 2016

Summary

A new method uses surface plasmon resonance (SPR) temperature imaging to detect microfluidic flow rates. This robust sensor technology accurately measures flow in lab-on-chip systems.

Keywords:

microfluidic flow rate detection surface plasmon resonance temperature variation imaging

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Area of Science:

Microfluidics
Optical Sensing
Surface Plasmon Resonance (SPR)

Background:

Accurate flow rate monitoring is crucial for microfluidic applications.
Existing methods may face limitations in sensitivity, integration, or robustness.

Purpose of the Study:

To develop and validate a novel microfluidic flow rate detection method.
To leverage surface plasmon resonance (SPR) temperature imaging for flow sensing.

Main Methods:

Utilized space-resolved surface plasmon resonance (SPR) imaging to detect flow-induced temperature variations.
Performed theoretical simulations and experimental validation.
Investigated water flow rates from tens to hundreds of μL/min.

Main Results:

Demonstrated a proof of concept for SPR temperature imaging as a flow sensing technique.
Successfully detected water flow rates in the range of tens to hundreds of μL/min.
The developed sensor exhibited resistance to disturbances.

Conclusions:

The proposed SPR temperature imaging method offers a viable approach for microfluidic flow rate detection.
The sensor is easily integrable into microfluidic lab-on-chip systems.
This technique provides a robust and sensitive solution for microfluidic flow monitoring.