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Thermosensation

Thermosensation

Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...

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Updated: Jun 6, 2026

Thermal Measurement Techniques in Analytical Microfluidic Devices

Thermal Measurement Techniques in Analytical Microfluidic Devices

Published on: June 3, 2015

Surface plasmon based thermo-optic and temperature sensor for microfluidic thermometry.

L J Davis¹, M Deutsch

¹Department of Physics, University of Oregon, 1274 Eugene, Oregon 97403, USA.

The Review of Scientific Instruments

|December 8, 2010

Summary

This summary is machine-generated.

This study introduces a non-contact method for fluid thermal characterization using surface plasmon resonance. The technique achieves high accuracy in determining thermo-optic coefficients and temperature sensing, ideal for microfluidic applications.

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Thermal Measurement Techniques in Analytical Microfluidic Devices

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Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Published on: August 30, 2012

Area of Science:

Physical Chemistry
Optical Physics
Materials Science

Background:

Accurate thermal characterization of fluids is crucial for various scientific and industrial applications.
Existing methods may require larger sample volumes or complex setups, limiting their use in microscale systems.
Non-interacting techniques are desirable to avoid perturbing the fluid sample during characterization.

Purpose of the Study:

To develop and demonstrate a non-interacting technique for the thermal characterization of fluids.
To achieve high accuracy in determining thermo-optic coefficients and temperature sensing.
To enable precise fluid diagnostics in microfluidic and lab-on-chip systems.

Main Methods:

Utilized surface plasmon resonance (SPR) interrogation for thermal characterization.
Employed a low-power probe laser operating at a single wavelength and polarization.
Required only a single interrogation angle for accurate material property determination.

Main Results:

Determined thermo-optic coefficients with accuracy better than 1×10⁻⁵ °C⁻¹.
Demonstrated temperature sensing with an accuracy of 0.03 °C.
Successfully characterized small liquid volumes (< 20 μl).

Conclusions:

The developed SPR-based technique offers a highly accurate and non-interacting method for fluid thermal characterization.
The system is suitable for precise diagnostics of liquids and gases in microfluidic systems.
Potential for integration into lab-on-chip platforms for rapid temperature diagnostics.