UAVs are widely used in military reconnaissance, information collection and environmental monitoring. However, if accidents crash, the wreckage left behind may not only pollute certain sensitive environments, but also tell the other party that "you are being pegged." . But biological drones may be able to avoid these problems because it becomes a small amount of mucus after degradation. “Nobody knows if this is the trace of sugar spills, or whether there was originally an airplane.†The maker of the biological drone, Lynn Rothschild of the NASA Ames Research Center. Said.
According to the New Scientist magazine website, the main part of the prototype is made of a material called mycelium, a fungus that is composed of many myceliums. New York Ecovative Design Inc. cultivated mycelium into a custom drone shape. The "fungi body" of the drone is protected by a layer of viscous cellulose "leather" made from bacteria in the laboratory; in addition to the protective layer, it is covered with proteins that are cloned from the saliva of the wasps. It is waterproof; the circuit is printed with silver nanoparticle ink to make the drone biodegradable as much as possible.
"There are definitely some components that cannot be replaced by creatures," said Raman Neracanti, a research team member at Stanford University. For example, at the International Genetic Engineering Machine Competition in Boston, when the bio-UAV made its first short-haul flight, the researchers gave it a propeller borrowed from an ordinary mechanical quadcopter. And operating devices. In addition, it also has a standard battery.
The research team's next step is to ensure that bio-UAV sensors are also safely degraded, and they have begun to explore how to use E. coli to make sensors.
But Aila Atkins, an aerospace engineer at the University of Michigan, warned that if the bio-unmanned aircraft breaks down too quickly, it can cause trouble. "We don't want the drone to biodegrade from the sky like a raindrop, we don't It is hoped that the crashed drone fragments will be scattered on the ground and at sea, even if they will eventually biodegrade."
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