Researchers Develop the World's Fastest Nanomechanical Rotor | Physics



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At over 60 billion revolutions per minute, a nanomechanical rotor developed by Tongcang Li, a Purdue University researcher, and his co-authors is more than 100,000 times faster than a drill High Speed ​​Dental Equipment

. They made it spin at high speed, which he hopes will help them study the properties of vacuum and quantum mechanics. Photo credit: Vincent Walter, Purdue University

Ahn et al levitated a nanoparticle in a vacuum and spun it at high speed, which will help them to study the properties of vacuum and quantum mechanics. Image Credit: Vincent Walter, Purdue University

Dr. Li and his colleagues from Peking University, Tsinghua University, Quantum Matter's Collaborative Innovation Center, and Sandia National Laboratories have synthesized a tiny dumbbell from silica and water. were levitated under vacuum pushed with the aid of a laser

a circle – when it is linear, the dumbbell vibrates, and when it is circular, the dumbbell rotates.

A rotating dumbbell works like a rotor, and a vibrating dumbbell works as an instrument to measure tiny forces and couples, known as a twisting.

These devices have been used to discover things like the gravitational constant and the density of the Earth, but the researchers hope that as they become more advanced, they will be able to study things like mechanics quantum and vacuum properties. 19659005] "People say that there is nothing in the void, but in physics we know it's not really empty," Dr. Li said.

"There are a lot of virtual particles"

"We want to understand what's really going on there, and that's why we want to do the most sensible torsion balance."

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Understanding these mechanisms is an essential goal for the modern generation of physics

"We can study the extreme conditions under which different materials can survive."

The research is published in the journal Physical Review Letters .]

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Jonghoon Ahn and others 2018. Torsional equilibrium Nanodumbbell optically levity and nanomechanical rotor of GHz. Phys. Rev. Lett 121 (3); doi: 10.1103 / PhysRevLett.121.033603

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