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Rheology Physics and Engineering Lab
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The lab uses physics to understand how substances like toothpaste and cream flow.

AboutAbout the lab
Using physics to understand things that are neither solid nor liquid.
The Masubuchi Lab studies the rheology of soft matter from a physics perspective.
Toothpaste, lipstick, and cream are examples of the many substances around us that are neither quite solid nor quite liquid, and rheology is the field that studies the motion of such materials.
The lab combines experiments, theory, and computational science, and also conducts research that applies findings from basic research to engineering.
Many of its topics do not use quantum mechanics or solid-state physics, and the lab is closely related to statistical mechanics, thermodynamics, and fluid mechanics.
Key terms
- Rheology
- The study of how materials flow and deform when forces are applied to them
- Soft matter
- Soft materials such as toothpaste, cream, and polymers that are neither quite solid nor quite liquid
- Statistical mechanics
- The branch of physics that derives the properties of a material as a whole from the behavior of many individual particles
NewsLab news
A doctoral student received the Best poster presentation award at the 12th Conference on Modification, Degradation and Stabilization of Polymers
A student received the Student Research Encouragement Award at the 197th Tokai Polymer Study Group Lecture Meeting
A master's student received the Best Presentation Award at the 53rd Annual Meeting of the Society of Rheology, Japan
Held a graduate admissions information session for the Department of Materials Science
A researcher received a Poster Award at the 13th Soft Matter Research Meeting
ResearchResearch themes
To elucidate the rheology of soft matter from a physical perspective, the lab combines experiments, theory, and computational science. It approaches rheology, which is relevant to diverse fields such as mechanical engineering, chemistry, food science, and biology, from the viewpoint of physics.
View More ↗MembersFaculty
The members of the Masubuchi Lab are faculty, a secretary, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorYuichi Masubuchi
- Associate ProfessorTakashi Uneyama
- Assistant ProfessorTakato Ishida
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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: “Hand in a non-newtonian fluid 05” ElisaG87 / CC BY 4.0 (cropped)
- Related lab (高圧力物質科学研究グループ): “DiamondAnvilCell 002” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (物性基礎工学研究グループ): “Superconductor ring and magnet in levitation” Julien Bobroff (user:Jubobroff), Frederic Bouquet (user:Fbouquet), LPS, Orsay, France / CC BY-SA 3.0 (cropped)
- Related lab (電子線ナノ物理工学研究グループ): “Transmission Electron Microscope Kemira” kallerna / Public domain (cropped)
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