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An international team of scientists has developed robots that can change from solid to liquid. They can perform amazing tricks as a result of this. They can jump, climb to heights, and even get out of the cage, like the T-1000, a character from the Terminator franchise.
You can control the shape and movements of machines using magnetic fields. In the future, this approach will allow the development of new technologies for biomedicine and engineering, from targeted drug delivery to universal screws.
Magnetic Material
Soft robots tend to be more malleable than their hard counterparts. But inferior to them in terms of strength, speed, and ease of control. These shortcomings are eliminated by a new material called magnetoactive phase transitional matter or MPTM. It is a magnetically active substance capable of transitioning between phases.
MPTM is made up of gallium embedded with tiny magnetic microparticles. A study can be found in the journal Matter states. This substance uniquely combines high mechanical strength, load capacity, and speed of movement in the solid phase and excellent adaptability (extensibility, separation, and fusion) in the liquid phase. Devices made of such material are able to respond to magnetic fields. They contain magnetic microparticles. Scientists have placed these robots in an alternating magnetic field to make them move. They even heat them up and turn them into liquid.
The experiment was conducted by Carmel Majidi. He is the head of the Soft Machines Lab at Carnegie Mellon University. He is also a senior author of the study, as well as his colleagues from Sun Yat-sen University and Zhejiang University. From the main sources of electromagnetism, it is known that when a metal is under the influence of a magnetic field, a current begins to develop spontaneously through it. This spontaneous surge of current heats up the metal and causes it to float.
With this method, the MPTM robots were able to take the form of a chain or a universal screw. They could retrieve objects from a dummy’s stomach, and navigate obstacle courses. The scientists also molded the MPTM into a small LEGO man. This man turns into a liquid and passes through the bars. In the video, which you can find on the main website of the university, it looks like the robot itself is re-assuming its original shape. However, the team restored it manually and then brought it back into the frame. He added that the inspiration for this robot was the T-1000. That is a character from the Terminator franchise.
The ability to shapeshift can be adapted for a variety of applications, especially in biomedicine. In the future, MPTM robots are likely to deliver drugs to specific organs and extract dangerous objects from the body. The ability to transition between solid and liquid states will also come in handy to get into confined spaces and hard-to-reach places.
