German company developed bionic machine jellyfish to extract hydrogen energy from seawater
The German Festo Engineering Company has developed a small bionic machine jellyfish that can communicate with each other using 11 infrared light emitting diodes in the dome structure. However, it is only a small electronic artwork that cannot be used in humans. Perform special tasks in production and life. According to reports recently organized by the Physicists Organization Network, US researchers have developed a new type of machine jellyfish (named Robojelly), which not only has the ideal underwater search and rescue capabilities, but also can continuously “harvesting†hydrogen energy from seawater as a supplement. At least, in theory, we can always be energetic. The relevant research results have been submitted to the "Smart Materials and Structure" magazine published by the British Physical Society.
Tadesh, who heads the research at Virginia Tech University, said that this machine jellyfish is made from a smart material, including carbon nanotubes, that changes shape or size under certain stimuli. Place it in a water tank where the surface material reacts chemically in the water, allowing it to mimic the natural movement of the jellyfish. This is the first time that successful use of external hydrogen has provided a source of fuel for submarine robots.
Jellyfish is an ideal invertebrate, relying on muscle fibers to control the contraction and expansion of the lumen to suck in and eject water, which in turn generates thrust to move the jellyfish in the axial direction of the body.
Researchers wrap carbon nanotubes with a smart material that can "remember" the original shape, the memory alloy, and allow the oxygen and hydrogen in the water to produce a thermochemical reaction on the outermost black platinum coating. The heat released by these reactions is transferred to the artificial muscles of the jellyfish of the machine, transforming them into different shapes. This means that machine jellyfish can replenish green renewable energy from the outside environment without the need for an external power source or constant battery replacement. At the same time, the hydrogen-powered machine jellyfish can be operated under the water tank.
Tadesh said: "The current design allows the pendulum part of the machine jellyfish to bend eight segments, each operated by a fuel-driven memory alloy module. If all the clock segments are activated, it will be enough to hold it up in the water. We are studying new ways of delivering fuel to each part so that the machine jellyfish can move in different directions.†(Hua Ling)
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