Latest topics
» POOFness for APR 19: TOUGH WEEK TO BE A BEGGING LYING PANHANDLER YAY!!!!
Yesterday at 11:11 pm by RamblerNash

» We Do Not Consent | Powerful Message to Humanity
Yesterday at 10:07 pm by PurpleSkyz

» Earth Day 2018
Yesterday at 9:56 pm by PurpleSkyz

» ARE YOU READY TO SEE WONDERLAND Parts 1-5
Yesterday at 9:52 pm by PurpleSkyz

» Hey Purps...We should have a "What Will Jerzy/ZAP Beg For This Week" Poll!
Yesterday at 9:21 pm by RamblerNash

» Out Of Mind Viewer Poll ~ "What Will Jerzy/ZAP Beg For This Week?" ~ Guests welcome to vote
Yesterday at 9:10 pm by PurpleSkyz

» Lyrid meteor shower peaks April 21 and 22
Yesterday at 7:48 pm by PurpleSkyz

» JUST WONDERING....
Yesterday at 7:17 pm by 4-truth

» #CANARY Q: NXIVM SONGBIRD Al_son Mack, A Sch_ff, Ob_ma, "Wendy" Wass_rman Sch_ltz
Yesterday at 7:05 pm by PurpleSkyz

» MORE CRAZY WILDLIFE BEHAVIOR! What the heck?
Yesterday at 6:06 pm by PurpleSkyz

» Bill Gates Funding Web of Satellites For Global Real-Time Surveillance
Yesterday at 6:03 pm by PurpleSkyz

» Graham Hancock the Story Behind His Quest for the Lost Civilization
Yesterday at 4:47 pm by PurpleSkyz

» Inexplicable Similarities Between Göbekli Tepe, Easter Island, And Other Ancient Sites
Yesterday at 11:38 am by PurpleSkyz

» Millionaire Hid Treasure in the Rockies, and He’s Given One Clue to Where It Is
Yesterday at 11:36 am by PurpleSkyz

» US govt counterterrorism center accidentally releases ‘remote mind control’ documents - report
Yesterday at 11:33 am by Consciousness Of Economic

» "Anonymous: I've Never Seen The Sky That Color!"
Yesterday at 11:32 am by PurpleSkyz

» Federal Agencies and Public Health Experts Refuse to Declare Autism a National Health Crisis
Yesterday at 10:05 am by PurpleSkyz

» NIBIRU News ~ NIBIRU & HUGE PLANET BY SUN plus MORE
Yesterday at 9:33 am by PurpleSkyz

» NEIL KEENAN UPDATE | 20180408 NK Update
Yesterday at 9:29 am by PurpleSkyz

» UFO News ~ Mysterious Purple Beams, UFOs Spotted in Arizona Skies plus MORE
Yesterday at 9:23 am by PurpleSkyz

» Is the RV / GCR ready to be announced? This just happened and the media is keeping this quiet.
Yesterday at 9:14 am by PurpleSkyz

» No Such Thing as Chance
Yesterday at 9:01 am by PurpleSkyz

» Did Solar Plasma Blasts Decimate Ancient Egypt 12,000 Years Ago?
Yesterday at 8:55 am by PurpleSkyz

» Max Igan - The Prison You Live In And How You Hold The Key to Escape It
Yesterday at 8:47 am by PurpleSkyz

»  Titthakara By Jack Heart & Orage
Yesterday at 8:43 am by PurpleSkyz

» Northern New York District Court Clinton Indictment
Yesterday at 6:18 am by ANENRO

» Q Anon Update April 20 - The War Is Real
Yesterday at 1:41 am by Serena1

» SKULL & BONES ORPHIC CIRCLE PLATO & THE UFO FILE! DARK JOURNALIST & JOSEPH FARRELL X SERIES VII
Fri Apr 20, 2018 9:37 pm by PurpleSkyz

» #88 Doctor Dies Unexpectedly, Holistic Prominent and Outspoken
Fri Apr 20, 2018 9:32 pm by PurpleSkyz

CURRENT MOON

You are not connected. Please login or register

Out Of Mind » THE INSANITY OF REALITY » SCIENCE » Moving Objects Using Sound

Moving Objects Using Sound

Go down  Message [Page 1 of 1]

1 Moving Objects Using Sound on Thu Jul 18, 2013 7:07 pm

PurpleSkyz

avatar
Admin
Moving Objects Using Sound

Jul18

AngelicView: What else can you think of may have been moved into place by using sound waves, as theorized by many?
From TheScientist by Kate Yandell | July 17, 2013
Researchers have discovered how to move and mix substances using sound, according to a paper published in the Proceedings of the National Academy of Sciences yesterday (July 15). The technique, which works under normal atmospheric pressure, could help researchers manipulate reagents without contaminating them and perform reactions between hazardous materials more safely, Nature reported.
The researchers were able to levitate and transport items ranging from a droplet of water to a toothpick. They did so using pairs of sound-emitting platforms and reflector sheets. Sound leaves the sound-emitting platform, hits the reflector, and bounces back in the direction it came from. At certain points the sound waves meet in such a way that they cancel each other out, forming nodes. These nodes are where the levitated objects stay, and researchers can manipulate the objects by adjusting the positions of the nodes.
The researchers used levitation by sound waves to combine water and sodium and even to transfect cells suspended in fluid with DNA stored in its own medium. “We are not aware of any other method or technology able to perform such multidroplet transport and handling in a gaseous environment,” the authors wrote. They also said that levitation by sound could be helpful for those hoping to manipulate fragile materials.
“This is a very versatile platform—almost anything you want to manipulate, you can,” Peter Christianen, a researcher at Radboud University in the Netherlands who studies magnetic levitation, told Nature.
AngelicView: Here’s another article from the Washington Post:
By Meeri Kim

Scientists have been able to use the power of sound to levitate small items — including insects and fish — for decades. But now researchers in Switzerland have figured out how to move objects around in midair, according to a new study.
The breakthrough in acoustic levitation will allow scientists to unlock “a huge amount of applications for this very powerful method,” including in pharmaceutical and electronics manufacturing, said author and mechanical engineer Dimos Poulikakos of ETH Zurich, a science and technology university in Switzerland.


The study was published online Monday in the Proceedings of the National Academy of Sciences.
Poulikakos’s team performed a number of midair experiments, such as combining water droplets or chemical solutions, inserting DNA into cells and even making a tiny portion of instant coffee. They also levitated a wooden toothpick — something that had never been done before — while rotating it and moving it forward and backward.

Sound waves exert pressure when they hit a surface, but the effects are usually too small to notice. But if the intensity is cranked up high enough, sound has the ability to counteract the effects of gravity.

Poulikakos and his colleagues used levels of about 160 decibels; that’s louder than standing near a rocket launch and is enough to rupture a human eardrum. But they were able to work without ear protection.

They took advantage of the fact that the frequency of sound — the physical property that gives it a pitch — also matters. Using 24,000 hertz (Hz), a level comparable to a dog whistle, they were unaffected by the noise. The upper range of human hearing is about 20,000 Hz.

Their levitation device looks something like a chessboard, with each penny-size square emitting its own sound. A large, clear plastic plate is placed a small distance above the chessboard to reflect the sound; if the sounds waves are strong enough, objects can hover and move around within the space.

The tricky part was figuring out how to move things from square to square carefully, without damaging them, said lead author Daniele Foresti, also a mechanical engineer at ETH Zurich.

Foresti found that balance was the key. Push too hard, and the sound waves will cause a water droplet to explode. Don’t push hard enough, and the droplet will fall and gravity wins. Eventually, he found that the way to succeed was to slowly lower the sound intensity of the “giving” square while ramping up that of the “receiving” one.

Think of a table with a row of light bulbs, each with its own dimmer switch, Foresti said. If you carefully lower the brightness of one bulb while increasing that of the next, you will keep a steady level of light in the room. This concept allowed him to carefully adjust the levels of each sound-emitting square via computer software in order to move hovering objects around the chessboard remotely.

Poulikakos compares the previous state of acoustic levitation — without the airborne motion control — to a luxury car kept permanently in park. “We could walk around it and enjoy it, but we could not drive it,” he said. “Now we can drive it.”

Physicist Rick Weber of Argonne National Laboratory outside Chicago commended the authors for developing “a highly innovative approach” that furthers the capabilities of acoustic levitation. A YouTube video of Weber’s own experiment went viral late last year. It showed the drop-by-drop suspension of a liquid using Argonne’s acoustic levitator. But Weber was not able to transport the drops from place to place.

Poulikakos’s advance over motionless levitation will probably be useful to the pharmaceutical industry, allowing scientists to mix solutions in midair without the potential for contamination from a container, Weber said.

For now, scientists are able to use acoustic levitation to move only small, lightweight objects. Poulikakos said he will soon release new results that show his team moving heavier and more dense objects, such as steel balls.

 

Thanks to: http://angelicview.wordpress.com



  

Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum