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Sakai Lab
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The lab measures the properties of liquids and soft materials using measurement technology it develops itself.
AboutAbout the lab
Measuring the behavior of liquids in new ways
The Sakai Lab develops its own technologies for measuring the physical properties of liquids and soft materials.
The lab ejects droplets about the size of a cell into the air and captures them, then studies phenomena unique to the microscale.
By observing collisions between droplets and the oscillation of droplets that hit a substrate, the lab also measures properties such as surface tension.
The lab has also developed a new type of viscometer based on the electromagnetically spinning (EMS) method, and is advancing joint research with industry and medicine.
Key terms
- Soft materials
- A collective name for materials that are soft and easily deformed, such as colloidal solutions, liquid crystals, and gels
- Electromagnetically spinning (EMS) method
- A method that uses a rotating magnetic field to spin a metal sphere inside a sample without touching it, and measures viscosity from how the sphere rotates
- Surface tension
- The force that makes the surface of a liquid contract. It is what makes water droplets round
NewsLab news
Participated in the campus open house (Institute of Industrial Science Open House) on June 5–6
A paper from the lab won the Ultrasonics Symposium Paper Award
ResearchResearch themes
The lab builds even the measurement methods themselves, such as techniques for creating and manipulating tiny droplets and a new viscometer based on the electromagnetically spinning (EMS) method. It investigates the physical properties of soft materials such as colloidal solutions, liquid crystals, and gels, as well as the distinctive dynamics of complex fluids.
*Illustrative imageCreating and manipulating tiny droplets
The lab turns various liquids into droplets about the size of a cell, ejects them into the air, and captures them with electric fields or light to control their shapes. Industry also has high expectations for applications such as measuring the mechanical properties of cells and patterning organic semiconductors.
*Illustrative imageMeasuring viscosity simply, quickly, and accurately
The lab is developing a measurement system based on a new principle that overcomes the problems of conventional viscosity measurement. It is expected to be used in fields where viscosity could not be measured before, such as evaluating rare samples and medical and biological testing.
MembersFaculty
The members of the Sakai Lab consist of faculty, academic specialists, project researchers, commissioned researchers, and research fellows.As of 2026
- ProfessorKeiji SakaiPublications ↗
- Project LecturerShujiro Mitani
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: “Ionic Liquid Liquid Crystal” Monia Martins / CC BY-SA 4.0 (cropped)
- Creating and manipulating tiny droplets: “Orange Coronet” JJ Harrison / CC BY-SA 3.0 (cropped)
- Measuring viscosity simply, quickly, and accurately: “Kugelfallviskosimeter” Lutz Harke (CUPRA at German Wikipedia) / CC BY-SA 2.5 (cropped)
- Related lab (福谷研究室): “Photoemission laboratory” Food95 / CC BY-SA 4.0 (cropped)
- Related lab (金澤研究室): “Neel skyrmion coneplot” Forschungszentrum Jülich / CC BY 4.0 (cropped)
- Related lab (井手上
研究室): “Graphen” AlexanderAlUS / CC BY-SA 3.0 (cropped) - Related lab (有馬・徳永研究室): “SPring- img pano” en:User:Artorius / CC BY-SA 3.0 (cropped)
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