According to foreign media New Atlas, when it comes to flexible robotic devices, you might think of some devices that are as soft as rubber or foldable like origami. Due to the use of conductive folding metal materials, the latter will soon become lighter, stronger and stronger.
Origami-style flexible robots are usually made of folded plastic or paper. To make them electronically functional, sensors and circuits must be added to their surfaces, but this makes them larger, heavier, and less flexible.
The new material was developed by scientists at the National University of Singapore led by Associate Professor Chen Po-Yen and folded into a retractable structure, just like a bellows. They then immersed the structure in a graphene oxide solution, immersed in a platinum ion solution (gold or silver can also be used), and burned in argon at 800ºC (1,472ºF).
The material produced by this process is composed of 70% platinum and 30% amorphous carbon (ie ash). In the last step, the material is soaked in the elastomer solution to stabilize it. The finished product is foldable, stretchable and flexible, with a thickness of only 90 microns. According to reports, it weighs only half of paper, but unlike paper or plastic, it is electrically conductive.
In addition, it can withstand temperatures up to 800ºC for up to five minutes without burning, and it will generate heat in response to the applied current. These characteristics allow the "backbone" robot made of this material to operate under hazardous conditions and de-ice itself when needed.
Experiments also show that this material can induce mechanical stress, and because it can act as its own antenna, it can enable robots to communicate with each other or with the operator wirelessly.
Scientists are now investigating the use of cheap metals (such as copper) and are exploring ways to allow this material to store energy-so no separate battery is needed. It is hoped that this material can eventually be used in applications such as search and rescue robots or lightweight repair equipment.
Related papers were recently published in the journal "Science Robot".
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