dalasverdugo

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.

  1. gwenndael reblogged this from roxymiller and added:
    Maintenant je m’interroge : est-ce que les scientifiques qui ont découvert ce phénomène de lévitation acoustique...
  2. ragahomedepot reblogged this from never-tell-me-the-odds
  3. never-tell-me-the-odds reblogged this from lordarthcaedus
  4. lordarthcaedus reblogged this from orderfromdischord
  5. orderfromdischord reblogged this from the-science-llama
  6. syntheticsummer reblogged this from cyberpsychic
  7. terks13 reblogged this from ieatmyshirtprincess
  8. lunar-bonez reblogged this from sciandstuff and added:
    Sometimes I forget that I have a science blog
  9. marshyoftheblobs reblogged this from therestlessdead
  10. bewilderebeest reblogged this from therestlessdead
  11. therestlessdead reblogged this from rexobxo
  12. lesbeyonce1 reblogged this from the-science-llama
  13. writeitreaditkillit reblogged this from rexobxo
  14. ponderpretties reblogged this from gun-horse
  15. gun-horse reblogged this from rexobxo
  16. russianmafiadon reblogged this from radieum
  17. infinityrant reblogged this from radieum
  18. chihiro-fujisexy reblogged this from radieum
  19. radieum reblogged this from zachabee-deactivated654323
  20. thestudy-ofhumans reblogged this from vergess
  21. independentpics reblogged this from lightlybow