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Tabaru Lab
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A lab that uses sound waves to measure and image the stiffness and shape of the body and of fruit.
AboutAbout the lab
Capturing the structure and properties of materials with sound waves.
The Tabaru Lab studies "acoustic morphology," which uses sound waves to investigate the shape and properties of materials.
The lab focuses on the heterogeneous structures found in many kinds of materials, measuring their shapes and turning them into images.
By building ultrasonic devices and systems and carrying out numerical analysis, the lab develops the foundations of measurement technology, aiming for applications in medicine, agriculture, musical instruments, and industry.
The lab also conducts joint research with other universities, companies, and physicians.
Key terms
- Ultrasound
- Sound at frequencies too high for the human ear to hear. It is used for examinations that image the inside of the body, among other purposes.
- Optical coherence tomography (OCT)
- A technology that uses the interference of light to produce detailed cross-sectional images of regions somewhat below the surface.
- Ultrasound CT
- A method that sends sound from all around using many ultrasonic elements arranged in a ring, and builds cross-sectional images of the body.
NewsLab news
A doctoral student received an Encouragement Award at the Annual Meeting of the Japan Society of Ultrasonics in Medicine
A master's student received a Poster Award at the results report meeting of the Joint Research Center for Biomedical Engineering
A master's student received an Outstanding Poster Award at the Japanese Society of Soil Physics meeting
A student received an RWB Stephens Honorable Mention Award
A student received the Department of Electrical and Electronic Engineering Outstanding Bachelor's Student Award
ResearchResearch themes
Applying sound waves yields information different from what human touch and vision provide. Building on measurement technologies that underpin ultrasonic devices and systems, the lab works on applications in biological information, agriculture, musical instruments, and industry.
*Illustrative imageMeasuring biological function and medical diagnosis
The lab works on endoscope-type stiffness diagnosis using optical coherence tomography (OCT) and high-frequency ultrasound, and on monitoring muscle condition with wearable ultrasonic sensors.
*Illustrative imageRing-shaped ultrasound imaging system
The lab is developing ultrasound CT technology to image the inside of children's heads, where effective imaging methods are limited. The work is carried out jointly with companies and researchers at other universities.
*Illustrative imageMeasuring fruit softness without touching it
The lab devised a method that uses ultrasound focused in the air to induce tiny vibrations in fruit and measures softness from those vibrations. The current method, which presses a needle against the fruit, damages peaches and strawberries.
*Illustrative imageSound and movement of the traditional instrument kotsuzumi
Under the aim of exploring the world of Zeami scientifically through the kotsuzumi, a traditional Japanese hand drum, the lab studies the movements and sounds of professional kotsuzumi players as they perform.
MembersFaculty
- Associate ProfessorMarie TabaruPublications ↗
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: “Soundfield Water 4MHz TransducerRadius5mm” Michael Lenz / Public domain (cropped)
- Measuring biological function and medical diagnosis: “A medical ultrasound linear array probe, scan head, transducer” Harrison Keely / CC BY 4.0 (cropped)
- Ring-shaped ultrasound imaging system: “Curved Array Ultrasound Sensor Construction” Binarysequence / CC BY-SA 4.0 (cropped)
- Measuring fruit softness without touching it: “Ripe peaches - geograph.org.uk - 882396” Evelyn Simak / CC BY-SA 2.0 (cropped)
- Sound and movement of the traditional instrument kotsuzumi: “Japanese small hand drum,kotsudumi,katori-city,japan” katorisi / CC BY-SA 3.0 (cropped)
- Related lab (中村研究室): “Ultrasonic motor” Yorkshire Terrier / Public domain (cropped)
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田口研究室): “Organic crystal 1” RemiJos / CC BY 4.0 (cropped) - Related lab (
青柳研究室): “Reverberation chamber” Manuamador / CC BY-SA 3.0 (cropped) - Related lab (沖野研究室): “Buse plasma à pression atmosphérique” Acxys / CC BY-SA 3.0 (cropped)
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