Skywizard
26th January 2014, 20:32
Scientists have developed a device that makes liquid droplets "dance," hovering in midair, without exploding.
Music blasts can't quite lift you off your feet just yet, but making droplets levitate with sound may be the first step in that direction. A team of researchers demonstrated experimentally how to lift and spin liquid droplets, controlling them with high-frequency sound waves.
The scientists developed a device that makes liquid droplets "dance," hovering in midair, without exploding. The achievement could lead to potential biological and pharmaceutical applications, such as studying chemical reactions in extreme environments without disturbing them via contact, moving hazardous materials, and analyzing and testing new materials without the risk of contamination. It could also be used in microgravity experiments on Earth.
http://www.dailymotion.com/video/x1acma0_sound-waves-make-droplets-dance_news
The team describes the device, functioning at a frequency of 32.5 kilohertz, in their paper, recently published in the journal Physical Review Letters. The acoustic waves are in the ultrasound range — too high-pitched for the human ear to hear, but very loud, blasting at about 160 decibels, where 120 dB is the limit for human hearing, said study co-author Daniele Foresti, a physicist at the Swiss Federal Institute of Technology (ETH) in Zurich, Switzerland.
Source: http://www.livescience.com/42757-sound-waves-make-droplets-dance-in-midair.html
peace...
Skywizard
Music blasts can't quite lift you off your feet just yet, but making droplets levitate with sound may be the first step in that direction. A team of researchers demonstrated experimentally how to lift and spin liquid droplets, controlling them with high-frequency sound waves.
The scientists developed a device that makes liquid droplets "dance," hovering in midair, without exploding. The achievement could lead to potential biological and pharmaceutical applications, such as studying chemical reactions in extreme environments without disturbing them via contact, moving hazardous materials, and analyzing and testing new materials without the risk of contamination. It could also be used in microgravity experiments on Earth.
http://www.dailymotion.com/video/x1acma0_sound-waves-make-droplets-dance_news
The team describes the device, functioning at a frequency of 32.5 kilohertz, in their paper, recently published in the journal Physical Review Letters. The acoustic waves are in the ultrasound range — too high-pitched for the human ear to hear, but very loud, blasting at about 160 decibels, where 120 dB is the limit for human hearing, said study co-author Daniele Foresti, a physicist at the Swiss Federal Institute of Technology (ETH) in Zurich, Switzerland.
Source: http://www.livescience.com/42757-sound-waves-make-droplets-dance-in-midair.html
peace...
Skywizard