The new sound is available suspended solids suspended in the air may move

 recently, scientists from the University of Sao Paulo, Brazil developed an advanced acoustic levitation device, do not be too critical of their accurate positioning of the individual components, its usefulness is enhanced.


　　First of all, we come to know about acoustic levitation device. 

　　This is a wonderful device to take advantage of the reverse sound waves to make some small objects suspended in midair. It works very simple transducer generates ultrasound will move down to the concave reflector within a short distance. Reflected wave moves upward when they encountered a new sonic moving down. This time, two acoustic standing wave is formed between the transducer and reflector being a pressure sufficient to create a lightweight article to stay in place, for example, falling liquid and small paper ball.

Typically, the transducer and the reflector relative distance to be very precise, otherwise it is impossible to form an effective standing wave. However, the new device developed at the University of Sao Paulo is very unique, can be used as non-resonant acoustic levitation device. Precise distance between the two components is no longer necessary condition, even by changing the direction of the mirror, the object may be hovering in the air movement.

　　It is reported that the new device is currently only suspended over 3mm polystyrene balls, the researchers hope that it will be able suspended for more items, such as hazardous materials and medicines. The project leader Marco Aurélio Brizzotti Andrade said the new device can be used in the manufacturing field, replacing strange robots.