nanoramas

A wide view of small things, with a focus on database cinema, internet culture, creativity, and good ol' fashioned filmmaking. I'm a filmmaker currently living in Ann Arbor, MI. More at jenniferproctor.com.
~ Thursday, January 10 ~
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thesciencellama:

Acoustic Levitation

Using sound waves to levitate individual droplets of solutions containing pharmaceutical drugs and drying them in mid-air. Why do this? This is useful because most of the drugs on the market are either amorphous or crystalline and the crystalline form doesn’t get absorbed by the body. So levitating the solution allows the drug to be made into an amorphous state (by evaporation) because if it were to touch any surface it would simply crystallize. They call this “containerless processing”.

The frequencies used are just above the audible range at about 22 kilohertz and when the two speakers are aligned they create two sets of sound waves, perfectly interfering with each other creating a phenomenon known as a standing wave. This allows the objects to levitate in areas within the waves known as nodes as the acoustic pressure is enough to cancel the force of gravity.

Video Source - Argonne National Laboratory

ACOUSTIC. LEVITATION.


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    Acoustic Levitation Using sound waves to levitate individual droplets of solutions containing pharmaceutical drugs and...
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    Ok what… this is like that one water stream oscillating at the same frequency as the camera framerate, only *real*.
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