Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. 24/7 Space News .




TECH SPACE
Japanese scientists move objects using acoustic levitation
by Staff Writers
Moscow (Voice of Russia) Jan 06, 2014


Potential energy distribution of ultrasonic standing wave (Image from arxiv.org)

Japanese scientists have been successful in moving an object in a three-dimensional space through a complex system of acoustic levitation, surpassing previous research endeavors that lifted the objects in two dimensions.

In order to move expanded polystyrene particles of 0.6 mm and 2 mm in diameter, the Japanese scientists at the University of Tokyo and the Nagoya Institute of Technology had to place the objects inside a complex set-up of four arrays of speakers. Using a refinement of the existing technology of sound wave management, bubbles, a screw and a tiny piece of wood were airlifted and moved around in all direction within the experiment's confines.

"We considered extended acoustic manipulation whereby millimeter-sized particles were levitated and moved three-dimensionally by localized ultrasonic standing waves, which were generated by ultrasonic phased arrays," the study stated.

The experiment machine is comprised of audio speakers capable generating inaudible high frequencies sound waves that intersect inside a restrained space. The waves then generate a "moveable ultrasonic focal point," frequency noise greater than 20kHz, where crossover creates standing waves. Some waves are kept in constant position, serving as a suspending force, while other waves are used to support a floating object jammed in the standing waves.

"Our manipulation system has two original features. One is the direction of the ultrasound beam, which is arbitrary because the force acting toward its center is also utilized. The other is the manipulation principle by which a localized standing wave is generated at an arbitrary position and moved three-dimensionally by opposed and ultrasonic phased arrays," the study said.

The practice of moving tiny objects acoustically along the fixed axes is not new, but it was previously applied to 2D, starting from 1975.

"The essence of levitation technology is the countervailing of gravity. It is known that an ultrasound standing wave is capable of suspending small particles at its sound pressure nodes," Yoichi Ochiai from University of Tokyo said.

Currently, acoustic levitators are used mostly in industry and for researchers of anti-gravity effects such as at NASA.

Source: Voice of Russia

.


Related Links
The Material Sciences
Space Technology News - Applications and Research






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





TECH SPACE
Computers search for 'cheapium' versions of expensive materials
Durham, N.C. (UPI) Jan 3, 2013
U.S. researchers say they are turning to pure computing power in the search for cheaper materials that mimic their purer, more expensive counterparts. Researchers from Duke University's Pratt School of Engineering have used computational methods to identify dozens of platinum-group alloys previously unknown to science that could prove beneficial in a wide range of applications, the univ ... read more


TECH SPACE
Wake Up Yutu

Chang'e-3 satellite payload APXS obtained its first spectrum of lunar regolith

Chang'e 3 Lander and Rover From Above

China's moon rover "sleeps" through lunar night

TECH SPACE
One-way trip to Mars? Sign me up, says Frenchwoman

Who Wants to Go to Mars - One Way?

More than 1,000 chosen for one-way Mars reality-TV mission

Clues from Orbit Aiding Exploration Of Opportunity Rover

TECH SPACE
Toymakers target 'kidults' at high-tech Hong Kong fair

An astronaut's rhythm

Astronauts Practice Launching in NASA's New Orion Spacecraft

Only lawyers profit as tech giants go to war over patents

TECH SPACE
China launches communications satellite for Bolivia

China's moon rover continues lunar survey after photographing lander

China's Yutu "naps", awakens and explores

Deep space monitoring station abroad imperative

TECH SPACE
New Science Bound for Station on Orbital's Cygnus

NASA extends space station life to 2024

CU-Boulder to fly antibiotic experiment on ants to space station

Antares and Cygnus Launch Update

TECH SPACE
'20 years of toil has paid off' Says Radhkrishnan

GSLV-D5 launch: What the success means

SpaceX launches second commercial satellite

Orbital to attempt launch to space station Thursday

TECH SPACE
Research: Smaller exoplanets found to be covered in gas

Newfound planet is Earth-mass but gassy

Earth appears to be an oddity, astronomers say

Planet-hunting telescope camera returns first images of exoplanets

TECH SPACE
Two new radar stations to be placed into service in Russia in 2014

3D printing poised to shake up shopping

ISRO raises GSAT-14's orbit

RAMBO a small but powerful magnet




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement