A new theory can be announced that can float and precisely control a huge object just by illuminating it
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Attempts have been made to illuminate the spacecraft to accelerate the spacecraft, but it has been assumed that the spacecraft is only a few mm in size, or the interstellar material drifting in space is a hindrance. And had a difficult task. If the theory proposed by the California Institute of Technology is put into practical use, it is expected that the objects that can be moved by light will be expanded at a stretch to a meter size at a stretch, and the possibility of light propulsion technology by theoretical existence becoming realistic will increase. You
Self-stabilizing photonic levitation and propulsions of nanostructured macroscopic objects | Nature Photonics
https://www.nature.com/articles/s41566-019-0373-y
Levitating Objects with Light | www.caltech.edu
https://www.caltech.edu/about/news/levitating-objects-light
A research team led by Professor Harry Atwater of the California Institute of Technology, in an article published in the Nature Photonics magazine , uses the “Self-stabilizing photonic levitation (Self-stabilizing photonic levitation” method to move objects with light by drawing nanoscale patterns on the surface of the objects. Presented the theory of 'self-stabilizing photon levitation'.
The technology of moving an object with light has already been put to practical use as “ optical tweezers ”, but this is a technology that moves nano-sized objects with a strongly focused laser. Ognjen Ilic, co-author of the paper, said, “The wind of a drier can float a ping pong ball with this light tweezers, but the same is true if the ping pong ball is too big or far from the drier. It can not be applied to the technology to send the aircraft to deep space. '
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The “self-stable photon levitation” proposed by the research team is that the surface of the object is subjected to nanoscale etching, so that the movement of the object is “self-stabilized” in the process of reflecting the irradiated light. It is said that it will be corrected automatically even if it deviates. Applications in space development fields are expected, as it is possible to move meter-sized objects in space without using a powerful converging beam, and to operate even if the distance from the light source to the target is several million km or more You are
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In the future, it is possible to realize a space exploration ship that accelerates to the speed near the speed of light by light emitted from the earth instead of fuel, and it is also possible to apply to engineering fields such as nano-sized electronic circuits. So, Atwater says, 'There is still a long way to go, but we are already at the experimental stage.'
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