New materials for robots
This reminds me of something, that we're trying to recreate all the dystopian futures in science fiction at the same time, so we're trying to create robots out of liquid metal, which could go wrong.
A group of researchers published in the scientific journal Matter their study and proof of concept to use a compound based on liquid metal that is capable of changing phase, that is, from solid to liquid and back to solid, to be used in places where it cannot be accessed with a tool that is only solid, basically a T-1000 but small and harmless.
It is a tiny robot, only 7 millimeters tall, it has an amazing quality of melting its solid metal body to escape from a small cage in a liquid state and then returning to its solid state outside its cage.
To resolve the above, they add magnetism to the gallium by mixing it with neodymium, iron and boron microparticles that are ferromagnetic and thus can control their phase state when they need it to be solid or liquid.
And to convert it from solid to liquid they make a magnetic field near it alternate its polarity rapidly, this stirs the atoms of the microparticles and creates heat, when this heat exceeds 30 degrees Celsius the little robot melts and behaves like a liquid and to return to its solid state they only have to turn off the magnetic field and as memory material it transforms again into a solid robot.
Some examples of the application of this stuff were shown, one example being that it can be split and transformed into two pieces that work as a team to Rotate an object and then are heated to merge into one again.
Either way, this is just a proof of concept, we're not going to have robots helping us anytime soon, but it definitely opens up the possibility that at some point they'll become amazing tools that help us in ways we're yet to discover.
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