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Search: authors:"Makoto Takenaka"

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Force sensor utilizing stiffness change of shape-memory polymer based on temperature

In this study, we propose a force sensor using a shape-memory polymer (SMP) whose stiffness varies according to the temperature. An SMP can be deformed above its glass transition temperature (T g) by applying a small load. A deformed SMP maintains its shape when cooled below T g and returns to its predefined shape when subsequently heated above T g. The reversible change in the ...

Acoustic stiffness and change in plug cartilage over time after autologous osteochondral grafting: correlation between ultrasound signal intensity and histological score in a rabbit model

We investigated quantitative changes over time in ultrasound signal intensity (an index of stiffness), signal duration (an index of surface irregularity), and interval between signals (an index of thickness) of plug cartilage in an animal model of autologous osteochondral grafting. A full-thickness osteochondral plug was surgically removed and replaced in male Japanese white ...