The metasurface tractor beam.

"Researchers at the ARC Centre of Excellence for Transformative Meta-Optical Systems, TMOS have developed a metasurface-enabled solenoid beam that can pull particles towards it, potentially revolutionizing non-invasive medical procedures like biopsies. This technology, which uses a thin layer of nanopatterned silicon, offers a lightweight, portable alternative to the bulky equipment previously required for such beams. Credit: University of Melbourne" (ScitechDaily, Not Science Fiction: Researchers Have Developed Metasurface Tractor Beams)

The acoustic tractor beam is like a tornado. The system must have a hole in the plate and the phonons or some other acoustic systems. Those are on rotating plates and must make the whirl.

The whirl closes the space inside it. The whirl denies the air channel fill from inside it, and then it forms the chimney where the air flows upwards. That kind of system requires, that there is a lower pressure area on the other side of the system.

Multilayer systems make it possible to create low-pressure areas between plates. That increases the system's power. And then the tornado just pulls things in it. The idea is that there is a targeted structure like a whirl that pulls objects in the wanted direction. The thing that makes this structure tractor-ray is that air flows in it, as it flows in a vacuum cleaner.

The phonons that send sound waves to every side of the structure can create the needed vacuum. The phonones can send acoustic waves simultaneously. And that helps to keep the low pressure in that structure where the objects travel in the air tube. This kind of system can remove dirt from surfaces.

The electromagnetic tractor beams require that there is almost zero energy point. Then the hollow laser ray will be shot around that 0 K point, and that laser ray causes the effect, where energy starts to travel to the 0K point in the bottom of this ray.

The coherent radiation travels like strings, and there should not be standing waves in the middle of the laser rays. The standing ray forms because of scattering. In long-distance models, the system must clean air using water or something like that to deny standing wave formation.

So outside energy pushes particles in that channel. And that kind of system is a fantastic tool for submolecular- or subatomic technology.

https://scitechdaily.com/not-science-fiction-researchers-have-developed-metasurface-tractor-beams/

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