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Robotic materials with the properties of living beings

26.06.2020

American scientists have developed a family of soft "robotic" materials that bend, rotate and crawl when exposed to light.

Researchers at Northwestern University in Evanston have used nanoscale peptide assemblies to create a material that can change the properties of meshes, both attracting moisture and repelling it.

"In medicine, soft materials with "living" characteristics, bending and changing shape, will ensure the extraction of blood clots in the brain after a stroke. They will be able to move on the surface of the water, cleaning reservoirs or seas, and also look for defects in batteries, membranes or chemical reactors," Samuel Stuppa, leader of the study, said.

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Smart tourniquet 03.10.2012

Scientists have developed a "smart" iTK hemostatic tourniquet for the US Army, which not only stops bleeding, but also saves lives.

The iTK is a compact mobile phone-sized device with a small pump and an inflatable bag. iTK's built-in computer takes medical indications and automatically loosens or tightens the tourniquet. Due to this, blood loss is minimized when a limb is injured, but most importantly, the “smart” tourniquet does not allow excessive compression, which can lead to tissue death and amputation of the limb.

It is usually the responsibility of the medic to watch the tourniquet, but there are often many wounded on the battlefield who need emergency care. In addition, often the transport of the wounded takes place under the supervision of another soldier or without any control at all. Thanks to iTK, you can not be afraid that an hour after applying a tourniquet that is too tight, a wounded soldier will lose his arm.

During the decade of the Iraqi and Afghan wars, many devices were invented that significantly reduced combat losses. The greatest advances have been made in the fight against heavy bleeding, which for thousands of years was the main cause of death on the battlefield. In recent years, the US military has tried several generations of bandages and granular substances that quickly clot blood and stop even the most severe bleeding.

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