employing the art of traditional japanese paper-cutting art could make bandages, heat pads, and wearable electronics adhere to flexible surfaces. MIT engineers have come up with a sticky solution to restrictive offerings, in the form of a thin, lightweight, rubber-like film which when cut using a pattern similar to the folding art of kirigami, gives the material a useful clinginess not offered with standard dressings.

 

originally an asian folk art much like origami, kirigami is the practice of cutting intricate patterns into paper before folding it to create beautiful, elaborate three-dimensional structures. more recently, scientists have been exploring kirigami as a way to develop new, functional materials.

 

ruike zhao, a postdoc in MIT’s department of mechanical engineering, led this project to create an adhesive film with the ability to stick to highly deformable regions of the body, such as the knee and elbow, and maintain its hold even after 100 bending cycles. the kirigami cuts give the film not only stretch, but also better grip opening a release tension that would otherwise cause the entire film to peel away from the skin.

kirigami paper-cutting art could make for better, more flexible bandages kirigami

images courtesy of researchers

 

 

the kirigami-patterned slits in stretchy film adhesives enabling the possibility for a whole swath of products, from everyday medical bandages to wearable and soft electronics. the group has fabricated a kirigami-patterned adhesive bandage, as well as a heat pad consisting of a kirigami film threaded with heating wires. with the application of a 3-volt power supply, the pad maintains a steady temperature of 100 degrees fahrenheit. the group has also engineered a wearable electronic film outfitted with light-emitting diodes. 

 

the fabricated thin kirigami films were made by pouring a liquid elastomer, or rubber solution, into 3D printed molds but researchers say the film can be made from a wide range of materials, from soft polymers to hard metal sheets. experiments with the material demonstrated the better the properties and usage of the kirigami style bandage. the team is now branching out to explore other materials on which to pattern kirigami cuts.

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