Equipment :
To do these experiments following are needed :
1) Ultrasonic Transducers (with same frequency)
- Acquire as many as needed for either 3D or single axis movement.
2) Aluminum Reflectors
- to create the equal but opposite sound waves.
3) Driver Board
- To create a relay of power for the transducer that allows it to accept.
4) Oscilloscope
- To observe standing waves, make sure it is suited for the Ultrasonic Generator.
Equipment list : courses.physics.illinois.edu
Experiments :
Numerous experiments have been conducted lately. One of which is posted on the previous page, about the Three-dimensional Levitation experiment using a large amount of transducers fitted to emit the same amplitude and frequency. By changing the amplitude they change the pressure allowing them to gain a net force in the direction they wish to move the focal point in as well as the net force cancelling the downward force of gravity. As you can see http://s.hswstatic.com
from the picture above
the object gets
trapped in
between the nodes of the
opposing waves.
Another interesting observation of these experiments came from one of National Geo-graphic's experiment in which they inserted dry ice into the waves and they Businessinsider.com could see the outline of the interior of the waves from the vapor of the ice.
Three-Dimensional Movement of Objects Using Sound :
To do these experiments following are needed :
1) Ultrasonic Transducers (with same frequency)
- Acquire as many as needed for either 3D or single axis movement.
2) Aluminum Reflectors
- to create the equal but opposite sound waves.
3) Driver Board
- To create a relay of power for the transducer that allows it to accept.
4) Oscilloscope
- To observe standing waves, make sure it is suited for the Ultrasonic Generator.
Equipment list : courses.physics.illinois.edu
Experiments :
Numerous experiments have been conducted lately. One of which is posted on the previous page, about the Three-dimensional Levitation experiment using a large amount of transducers fitted to emit the same amplitude and frequency. By changing the amplitude they change the pressure allowing them to gain a net force in the direction they wish to move the focal point in as well as the net force cancelling the downward force of gravity. As you can see http://s.hswstatic.com
from the picture above
the object gets
trapped in
between the nodes of the
opposing waves.
Another interesting observation of these experiments came from one of National Geo-graphic's experiment in which they inserted dry ice into the waves and they Businessinsider.com could see the outline of the interior of the waves from the vapor of the ice.
Three-Dimensional Movement of Objects Using Sound :
