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Thermal Fluid Physics Lab
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A heat transport lab that approaches the way heat is carried from the scale of atoms and electrons.
AboutAbout the lab
Solving heat transport from the scale of atoms and electrons.
The Thermal Fluid Physics Lab studies how heat is carried (heat transport phenomena) from the scale of atoms and electrons, aiming to go beyond the limits of conventional heat transport technology.
It clarifies heat transport phenomena through verification experiments using MEMS technology and high-speed infrared cameras, together with theory that incorporates applied physics such as phonons and photons.
The lab works from fundamentals to applications, including the thermal use of solar energy and higher efficiency of thermoelectric semiconductors, which convert thermal energy directly into electrical energy.
Key terms
- Thermoelectric conversion
- A technology that uses semiconductors to convert thermal energy directly into electrical energy.
- Phonon
- A lattice vibration of atoms that carries thermal energy inside a solid.
- Radiative cooling
- A phenomenon in which a material that reflects sunlight and has high infrared emissivity is not heated and is even cooled.
- 3ω method
- A measurement method that passes alternating current through a thin wire and obtains thermal conductivity by determining temperature from the 3ω voltage.
ResearchResearch themes
The lab approaches how heat is carried from the scale of atoms and electrons, aiming to go beyond the limits of conventional heat transport technology. Its heat-related themes range from thermoelectric conversion and control of radiative properties to analysis and measurement of thermal conduction and hydrogen production.
*Illustrative imageThermoelectric conversion with solution-processable semiconductors
If thermoelectric devices, which generate power directly from heat, can be made by printing, they can be produced at low cost. The lab studies thermoelectric applications of halide perovskites, semiconductors that can be applied as a coating.
*Illustrative imageControlling wavelength-selective radiative properties
A material that reflects sunlight and has high emissivity in the infrared is not heated and is even cooled (radiative cooling). The lab studies materials with wavelength-selective radiative properties that can regulate temperature without external power.
*Illustrative imageAnalyzing thermal conduction from the motion of atoms
In solids, heat is carried by electrons and lattice vibrations. In semiconductors and insulators, examining lattice vibrations reveals the details of thermal conduction. The lab calculates the motion of each individual atom to investigate the mechanism of heat transport.
*Illustrative imageMeasuring thermal conductivity with the 3ω method
The lab measures thermal conductivity, which is needed in many kinds of thermal design, using the 3ω method. A thin wire 30 μm wide is fabricated on the surface of the sample, and an alternating current is passed through it to heat the sample and measure temperature at the same time, with the temperature obtained from the voltage.
MembersFaculty
The Thermal Fluid Physics Lab's members consist of faculty, researchers, secretaries, and master's and undergraduate students.As of 2025
- Senior ProfessorKoji Miyazaki
- Assistant ProfessorKatsuaki Hashikuni
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “JWST Nircam1lwres” nasa GODDARD / Public domain (cropped)
- Thermoelectric conversion with solution-processable semiconductors: “Screen print squeegee hand bench” Scrud123 / CC BY-SA 3.0 (cropped)
- Controlling wavelength-selective radiative properties: “NASA Earth radiation thermal balance energy budget atmosphere” NASA Earth Observatory / Public domain (cropped)
- Analyzing thermal conduction from the motion of atoms: “Heat Conduction through 3 walls in parallel” Prantik20 / CC BY-SA 4.0 (cropped)
- Measuring thermal conductivity with the 3ω method: “TRSYS01 thermal resistance measurement system closeup” Hukseflux Thermal Sensors B.V. / CC BY 4.0 (cropped)
- Related lab (Hydrogen Utilization Process Lab): “Fuel Cell Electric Vehicles at ITM Power Hydrogen Station” Bexim / CC BY-SA 4.0 (cropped)
- Related lab (Fuel Cell Systems Lab): “SOFC solid oxide fuel cell” Luketheslovak / CC BY-SA 4.0 (cropped)
- Related lab (Process Systems Engineering Lab): “Lithium-Ion Battery for BMW i3 - Battery Pack” RudolfSimon / CC BY-SA 3.0 (cropped)
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