Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > World's fastest man-made spinning object could help study quantum mechanics

A nanodumbbell levitated by an optical tweezer in vacuum can vibrate or spin, depending on the polarization of the incoming laser. (Purdue University photo/Tongcang Li)
A nanodumbbell levitated by an optical tweezer in vacuum can vibrate or spin, depending on the polarization of the incoming laser. (Purdue University photo/Tongcang Li)

Abstract:
Optically Levitated Nanodumbbell Torsion Balance and GHz Nanomechanical Rotor Jonghoon Ahn, Zhujing Xu, Jaehoon Bang, Yu-Aao Deng, Thai M. Hoang, Qinkai Han, Ren-Min Ma, Tongcang Li Levitated optomechanics has great potential in precision measurements, thermodynamics, macroscopic quantum mechanics, and quantum sensing. Here we synthesize and optically levitate silica nanodumbbells in high vacuum. With a linearly polarized laser, we observe the torsional vibration of an optically levitated nanodumbbell. This levitated nanodumbbell torsion balance is a novel analog of the Cavendish torsion balance, and provides rare opportunities to observe the Casimir torque and probe the quantum nature of gravity as proposed recently. With a circularly polarized laser, we drive a 170-nm-diameter nanodumbbell to rotate beyond 1 GHz, which is the fastest nanomechanical rotor realized to date. Smaller silica nanodumbbells can sustain higher rotation frequencies. Such ultrafast rotation may be used to study material properties and probe vacuum friction.



The video was prepared by Erin Easterling, digital producer for the Purdue College of Engineering, 765-496-3388, easterling@purdue.edu.

World's fastest man-made spinning object could help study quantum mechanics

West Lafayette, IN | Posted on July 20th, 2018

Researchers have created the fastest man-made rotor in the world, which they believe will help them study quantum mechanics.

At more than 60 billion revolutions per minute, this machine is more than 100,000 times faster than a high-speed dental drill.

"This study has many applications, including material science," said Tongcang Li, an assistant professor of physics and astronomy, and electrical and computer engineering, at Purdue University. "We can study the extreme conditions different materials can survive in."

Li's team synthesized a tiny dumbbell from silica and levitated it in high vacuum using a laser. The laser can work in a straight line or in a circle - when it's linear, the dumbbell vibrates, and when it's circular, the dumbbell spins.

A spinning dumbbell functions as a rotor, and a vibrating dumbbell functions like an instrument for measuring tiny forces and torques, known as a torsion balance. These devices were used to discover things like the gravitational constant and density of Earth, but Li hopes that as they become more advanced, they'll be able to study things like quantum mechanics and the properties of vacuum. Watch a video to see how it happens here.

"People say that there is nothing in vacuum, but in physics, we know it's not really empty," Li said. "There are a lot of virtual particles which may stay for a short time and then disappear. We want to figure out what's really going on there, and that's why we want to make the most sensitive torsion balance."

By observing this tiny dumbbell spin faster than anything before it, Li's team may also be able to learn things about vacuum friction and gravity. Understanding these mechanisms is an essential goal for the modern generation of physics, Li said.

###

Researchers from Purdue, Peking University, Tsinghua University, and the Collaborative Innovation Center of Quantum Matter in Beijing also contributed to this work. The first author of this work is Jonghoon Ahn, a graduate student in Li's research group. Li's research was funded by the National Science Foundation and Office of Naval Research.

####

For more information, please click here

Contacts:
Writer: Kayla Zacharias
765-494-9318


Source: Tongcang Li
765-496-0072

Copyright © Purdue University

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Download article:

Related News Press

News and information

Nanometrics to Announce Second Quarter Financial Results on July 30, 2019 July 17th, 2019

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

Physics

Strange warping geometry helps to push scientific boundaries July 12th, 2019

Spontaneous synchronisation achieved at the nanoscale July 4th, 2019

New study shows nanoscale pendulum coupling July 3rd, 2019

Can break junction techniques still offer quantitative information at single-molecule level June 18th, 2019

Mysterious Majorana quasiparticle is now closer to being controlled for quantum computing: Princeton researchers detect a robust Majorana quasiparticle and show how it can be turned on and off June 14th, 2019

Quantum Physics

Research Reveals Exotic Quantum States in Double-Layer Graphene: Findings shed new light on the nature of electron interactions in quantum systems and establish a potential new platform for future quantum computers June 26th, 2019

Breaking the symmetry in the quantum realm May 31st, 2019

Govt.-Legislation/Regulation/Funding/Policy

Caught in the act: Images capture molecular motions in real time July 15th, 2019

An 'EpiPen' for spinal cord injuries July 12th, 2019

The best of both worlds: how to solve real problems on modern quantum computers July 12th, 2019

What happens when you explode a chemical bond? Attosecond laser technique yields movies of chemical bond dissociation July 12th, 2019

Possible Futures

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

Dresden physicists use nanostructures to free photons for highly efficient white OLEDs: Trapped light particles July 12th, 2019

Strange warping geometry helps to push scientific boundaries July 12th, 2019

Discoveries

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

Strange warping geometry helps to push scientific boundaries July 12th, 2019

Announcements

Nanometrics to Announce Second Quarter Financial Results on July 30, 2019 July 17th, 2019

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

An 'EpiPen' for spinal cord injuries July 12th, 2019

Grants/Sponsored Research/Awards/Scholarships/Gifts/Contests/Honors/Records

Sheaths drive powerful new artificial muscles July 11th, 2019

Nanotechnology pioneer Chad Mirkin wins Kabiller Prize in Nanoscience and Nanomedicine: Molly Stevens of Imperial College London receives Kabiller Young Investigator Award July 11th, 2019

'Tsunami' on a silicon chip: a world first for light waves: Sydney-Singapore team manipulates soliton photonic waves on a silicon chip July 5th, 2019

Research Reveals Exotic Quantum States in Double-Layer Graphene: Findings shed new light on the nature of electron interactions in quantum systems and establish a potential new platform for future quantum computers June 26th, 2019

Research partnerships

The best of both worlds: how to solve real problems on modern quantum computers July 12th, 2019

Sheaths drive powerful new artificial muscles July 11th, 2019

Activity of fuel cell catalysts doubled: Modelling leads to the optimum size for platinum fuel cell catalysts July 5th, 2019

Spontaneous synchronisation achieved at the nanoscale July 4th, 2019

Quantum nanoscience

Dresden physicists use nanostructures to free photons for highly efficient white OLEDs: Trapped light particles July 12th, 2019

Research Reveals Exotic Quantum States in Double-Layer Graphene: Findings shed new light on the nature of electron interactions in quantum systems and establish a potential new platform for future quantum computers June 26th, 2019

Mysterious Majorana quasiparticle is now closer to being controlled for quantum computing: Princeton researchers detect a robust Majorana quasiparticle and show how it can be turned on and off June 14th, 2019

2D crystals conforming to 3D curves create strain for engineering quantum devices June 7th, 2019

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project