New magnetic spray turns small objects into robots


Magnetic spray transforms inanimate objects into mini-robots

Scientists have developed an agglutinated magnetic spray that allows you to remotely control small objects, effectively turning them into robots.

A team of bioengineers from Shenzhen Institute came up with an easier way to make microrobots. They created an adhesive magnetic spray that contains polyvinyl alcohol, gluten and iron powder. When applied to the surface of objects, it firmly adheres to the surface, forming a film with a thickness of 0.1-0.25 mm, without changing their shape and structure.

New magnetic spray turns small objects into robots

After processing the item, the researchers magnetized it in one or more directions to precisely control the robot’s movements, and then heated it until the spray hardened. As a result of such manipulations, the movement of objects can be controlled using a magnetic field in various modes. Depending on the design, tiny robots can walk, crawl, roll, or roll over on various surfaces..

The developed M-spray is biocompatible and, if necessary, can be destroyed using an oscillating magnetic field, which allows it to be used for medical purposes. The coating also degrades quickly in an acidic environment, at pH 1 in about 8 minutes.

Recall that recently, scientists have also reported development of a new type of microrobots with acoustic control.

text: Ilya Bauer, photo: City University of Hong Kong, video: YouTube / SciTech Daily

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