This is a tiny 3D printed magnets that is able to shapeshift. Unlike other soft actuated devices, these 3D magnets can perform tasks in enclosed spaces making them ideal biomedical tools.

The objects are classified as soft actuated devices which means they are moldable and mobile, created by Xuanhe Zhao, MIT Dept of Mechanical Engineering.

MIT researchers infused silicone rubber with magnetic micro particles to print 3D objects that can roll, jump, crawl and play catch all with the wave of magnet.

For example, we could put a structure around a blood vessel to control the pumping of blood, or use a magnet to guide a device through the GI tract to take images. Also, to extract tissue samples, clear a blockage, or deliver certain drugs to a specific location.

You can also design, simulate, and then just print to achieve various functions.