Researchers at the Toyohashi University of Technology in Japan have developed an ultrastretchable bioprobe using Kirigami designs, which enables the device to follow the contours of spherical and large deformable biological samples, such as heart and brain tissues.
"The remarkable feature of Kirigami is that rigid and unstretchable materials can be rendered more stretchable compared to other elastomer-based stretchable materials," says Toyohashi's Yusuke Morikawa.
In addition, Morikawa notes the bioprobe's strain-stress property is very low compared to that of elastomer-based stretchable devices because the stretching mechanism is based on an out-of-plane bending of the thin film.
"Our preliminary studies on Kirigami-based parylene films by microelectromechanical systems technology exhibited high stretchability of 1,100 percent," says Toyohashi professor Takeshi Kawano.
The team thinks the bioprobes also can be used to explore tissues and organs that exhibit time-dependent alterations in their surface and volume due to growth or disease.
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