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Related Experiment Video

Updated: May 12, 2026

Thermal Measurement Techniques in Analytical Microfluidic Devices
08:29

Thermal Measurement Techniques in Analytical Microfluidic Devices

Published on: June 3, 2015

An optofluidic temperature probe.

Ilona Węgrzyn1, Alar Ainla, Gavin David Michael Jeffries

  • 1Department of Chemical and Biological Engineering, Chalmers University of Technology, Kemivägen 10, Göteborg SE-412 96, Sweden. ilona.wegrzyn@chalmers.se

Sensors (Basel, Switzerland)
|March 30, 2013
PubMed
Summary
This summary is machine-generated.

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We developed a microfluidic pipette for precise temperature measurement in tiny aqueous volumes. This method accurately tracks thermal activation of TRPV1 ion channels in biological experiments.

Area of Science:

  • Biophysics
  • Microfluidics
  • Cell Biology

Background:

  • Accurate temperature measurement is crucial for understanding biological processes, especially those involving localized heat generation.
  • Existing methods struggle with precise temperature readings in small, dynamic biological systems.
  • Microfluidic technologies offer potential for novel measurement techniques.

Purpose of the Study:

  • To develop and validate a microfluidic device for semi-contact temperature measurement in picoliter volumes.
  • To apply this device for studying the thermal activation of TRPV1 ion channels.
  • To provide a robust solution for temperature monitoring in complex biological experiments.

Main Methods:

  • Utilized a multifunctional microfluidic pipette operating on hydrodynamic confinement.

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Last Updated: May 12, 2026

Thermal Measurement Techniques in Analytical Microfluidic Devices
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Thermal Measurement Techniques in Analytical Microfluidic Devices

Published on: June 3, 2015

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  • Employed two fluorescent rhodamine dyes with differential temperature-dependent fluorescence responses.
  • Performed ratiometric intensity measurements for temperature calibration.
  • Investigated thermal activation of TRPV1 ion channels in Chinese hamster ovary cells.

    • Main Results:

    • Successfully calibrated the temperature dependence of the rhodamine fluorescence ratio.
    • Demonstrated the device's capability for semi-contact temperature measurement in picoliter volumes.
    • Applied the method to study thermal activation of TRPV1 ion channels, providing quantitative insights.
    • Validated the microfluidic approach for biological applications.

    Conclusions:

    • The microfluidic pipette provides a practical and robust method for precise temperature measurement in biological assays.
    • This technique is particularly valuable for experiments involving localized heat sources, such as IR-B laser applications.
    • The study advances the capability for detailed investigation of temperature-sensitive biological phenomena at the microscale.