A group of researchers led by Chinese scientists has developed a light-powered launch system for miniature robots. This invention has the potential to revolutionize the fields of ballistics and aerospace.
The developers were inspired by the seed dispersal mechanism of the squirting cucumber (Ecballium elaterium). They created a hydrogel launching device that utilizes rapid liquid evaporation triggered by the photothermal reaction of an embedded graphene suspension.
The researchers claim their invention can release energy in just 0.3 milliseconds. This feature enables the robot to launch from any surface, including leaves, tree bark, and viscous liquids.
The tiny disc-shaped device measures only 7 mm in diameter and 3 mm in thickness but can jump vertically to heights exceeding 1.93 meters. This is 643 times its own size.
The scientists showcased the potential applications of their invention by creating “smart seeds.” They attached a seed and a radio-frequency identification (RFID) tag to the hydrogel matrix. Once launched into a designated “smart” field, sensors read the RFID tag, identifying the type of seeds and providing care instructions.
The researchers believe their invention could be applied across various industries. Specifically, it could be utilized to develop medical robots capable of penetrating deep into tissues or to create “smart” sowing systems in agriculture. Additionally, due to its ability to accelerate quickly and its soft structure, this robot has the potential to serve as a type of “soft projectile.”
The study's results have been published in the scientific journal Nature. The scientists emphasize that their power-enhancing strategy lays the groundwork for propelled movement, enhancing the capabilities of miniature soft robotic systems.
Source: Interestingengineering
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