A team of researchers at the University of São Paulo in Brazil has developed a new levitation device that can hover a tiny object with more control than any instrument that has come before.
Featured on this week’s cover of the journal Applied Physics Letters, from AIP Publishing, the device can levitate polystyrene particles by reflecting sound waves from a source above off a concave reflector below. Changing the orientation of the reflector allow the hovering particle to be moved around.
Other researchers have built similar devices in the past, but they always required a precise setup where the sound source and reflector were at fixed “resonant” distances. This made controlling the levitating objects difficult. The new device shows that it is possible to build a “non-resonant” levitation device — one that does not require a fixed separation distance between the source and the reflector.
This breakthrough may be an important step toward building larger devices that could be used to handle hazardous materials, chemically-sensitive materials like pharmaceuticals — or to provide technology for a new generation of high-tech, gee-whiz children’s toys.
“Modern factories have hundreds of robots to move parts from one place to another,” said Marco Aurélio Brizzotti Andrade, who led the research. “Why not try to do the same without touching the parts to be transported?”
The device Andrade and his colleagues devised was only able to levitate light particles (they tested it polystyrene blobs about 3 mm across). “The next step is to improve the device to levitate heavier materials,” he said.
Read more: Acoustic Levitation Made Simple
The Latest on: Acoustic Levitation
via Google News
The Latest on: Acoustic Levitation
- Acoustic Levitation Of Water Dropletson August 31, 2019 at 5:00 pm
These water droplets are not falling; they’re actually stuck in place. What we’re seeing is the effects of an acoustic levitator. The device was initially developed by NASA to simulate microgravity.
- acoustic levitatoron August 29, 2019 at 5:00 pm
Levitation has a way of arousing curiousity and wonder wherever it appears. There’s a multitude of ways to do it, each with their own strengths and weaknesses and ideal use cases. [Julius Kramer] ...
- Non-Contact Universal Sample Presentation for Room Temperature Macromolecular Crystallography Using Acoustic Levitationon August 27, 2019 at 2:06 am
Macromolecular Crystallography is a powerful and valuable technique to assess protein structures. Samples are commonly cryogenically cooled to minimise radiation damage effects from the X-ray beam, ...
- Acoustic levitation allows for studying chemistry in liquids suspended in airon July 18, 2019 at 7:25 am
Sound waves propagate through the air by creating a series of high pressure and low pressure areas. An array of transducers can be used to control the high and low pressure areas, using ultrasonic ...
- Scientists levitate particles with sound to find out how they cluster togetheron March 5, 2019 at 8:13 am
“With acoustic levitation, we have a beautiful model system to study assembly at scales visible to the human eye, where we can track each particle with precision, and then relate the results to a wide ...
- Watch Sound Waves Levitate Small Objects In Different Directionson December 19, 2018 at 9:47 am
“Acoustic levitation,” the ability to move particles using only sound waves, has been explored by researchers for years, but until now it has only been able to move small objects along one axis at a ...
- UK team hails bendy ultrasonic levitation breakthroughon October 17, 2018 at 3:37 am
The concept of self-bending beams was initially used in engineering applications, to obscure buildings from noise or protect areas from earthquakes, but this is the first time it has been adopted for ...
- Acoustic tractor beam creates an ultrasound tornado for large-scale levitationon January 23, 2018 at 4:00 pm
Levitation is no longer just the realm of magicians, with engineers dabbling in ways to suspend objects in midair using magnets, heat flow or sound waves. Unfortunately, it usually only works with ...
- Could We Levitate Humans With the World’s Most Powerful Acoustic Tractor Beam?on January 22, 2018 at 7:17 am
In a sci-fi feeling first, engineers at the University of Bristol used the world’s most powerful acoustic tractor beam to demonstrate ... to hold particles in mid-air. While magnetic levitation also ...
- 3D Print Your Own Levitation Device Courtesy of the University of Bristolon August 21, 2017 at 8:10 am
Acoustic levitation uses strong acoustic waves to push particles from all directions and hold them in mid-air. It’s not as strong as magnetic levitation, which uses magnetic fields to suspend objects, ...
via Bing News