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Tsukagoshi Lab
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A lab that builds robots that sense, think, and move using fluids.
AboutAbout the lab
Robots that sense, think, and move with fluids
The Tsukagoshi Lab studies “fluid robotics,” which combines the properties of fluids with robotics.
The lab connects sensing, information processing, and motion through “fluid signals,” aiming for robots that adapt flexibly to their environment like an amoeba.
Robots driven by fluids yield gently to external forces and can squeeze into narrow spaces.
The lab sees its main arenas as places that electronically controlled robots cannot enter, such as medical and caregiving settings where electric shock or ignition is unacceptable, the inside of MRI scanners, and outer space.
Key terms
- Fluid
- A substance that has no fixed shape and flows, like water or air
- Actuator
- A component that converts electricity, air pressure, or other power into actual motion or force. It is the equivalent of a robot's muscle
- Traveling wave
- A wave whose crests and troughs move in sequence in one direction
NewsLab news
Assistant Professor Origane received the Inoue Research Award for Young Scientists
A student received a Best Demonstration Award at Robotics and Mechatronics 2024
A master's student received an Outstanding Presentation Award at the master's thesis presentation
Prof. Tsukagoshi and colleagues received a Best Paper Award at JFPS2024
ResearchResearch themes
The lab combines the properties of fluids with robotics, aiming to build “biologically functional fluid robots” in which everything from sensing to information processing to actuation is integrated through fluid signals. Built around three pillars (fluid soft actuators, fluid information processing, and fluid biosystems), it also works on robots for inspection and disaster response and for medical and caregiving settings.
*Illustrative imageFluid Soft Actuators
Soft actuators driven by fluids such as air, aiming for the “supple strength” of living organisms. Examples include a pneumatically driven two-finger hand that aims for the dexterity of the thumb and index finger.
*Illustrative imageFluid Information Processing
An attempt to have the fluid itself compute and make decisions, relying as little as possible on electronic circuits. The lab develops devices such as a soft valve that oscillates on its own from a single supply line and generates a traveling wave.
*Illustrative imageFluid Biosystems
Research on building “biologically functional fluid robots” whose senses, nerves, and movement work like those of living organisms. An example is a sheet-like locomotion robot modeled on the traveling wave in a snail's foot.
*Illustrative imageInspection, Maintenance, and Disaster-Response Robots
Robots that work at disaster sites and in inspections. One example is a jumping robot that advances by hopping and rolling, intended to gather information inside partially collapsed houses.
MembersFaculty
The members of the Tsukagoshi Lab consist of faculty, administrative support staff, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorHideyuki TsukagoshiPublications ↗
- Assistant ProfessorYuki OriganePublications ↗
VoicesStudent voices
Compiled from answers by students who were in the lab. Ratings and reviews reflect individual students' experiences, not the lab's official views.
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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: “Amoeba proteus locomotive form” SmallRex / CC BY-SA 4.0 (cropped)
- Fluid Soft Actuators: “Inflatable Robotic Arm” Z22 / CC BY-SA 4.0 (cropped)
- Fluid Information Processing: “BionicHandlingAssistant” Festo AG & Co. KG / CC BY-SA 3.0 (cropped)
- Fluid Biosystems: “Draparnaud's Glass Snail” SavTheNeutrinoGuy / CC BY-SA 4.0 (cropped)
- Inspection, Maintenance, and Disaster-Response Robots: “Rescue Robot Tests To Offer Responders High-Tech Help ( )” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (中臺研究室): “RF Fully Anechoic Room 2” Mihaelawojcik / CC BY 4.0 (cropped)
- Related lab (奥富・紋野研究室): “Monmouth castle point cloud, created with Photosynth 01” John Cummings / CC BY-SA 3.0 (cropped)
- Related lab (倉林研究室): “Ant Colony Trail” Prof OJ / CC BY-SA 4.0 (cropped)
- Related lab (川上研究室): “PIA16239 High-Resolution Self-Portrait by Curiosity Rover Arm Camera” NASA/JPL-Caltech/Malin Space Science Systems Derivative work including grading, distortion correction, minor local adjustments and rendering from tiff-file: Julian Herzog / Public domain (cropped)
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