New magnetic spray turns small objects into robots
Scientists have developed an agglutinated magnetic spray that allows small objects to be remotely controlled, effectively turning them into robots.
A team of bioengineers at the Shenzhen Institute has come up with an easier way to make microrobots. They created a sticky magnetic spray that includes 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.
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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 by means of an oscillating magnetic field, which makes it possible to use it 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 announced the development of a new type of acoustically controlled microrobots.
, City University of Hong Kong, video: YouTube / SciTech Daily