Soap bubble speaker

[APi]

Originally posted by ak_47_boy
Maby there has to be a bias supply ect. just like a esl.

Yes. It should be exactly like normal ESL except liquid membrane. You can also put a bit salt in water to make it better "conductor."

[valveitude]

Horizontal rods are made of metal and wide enough for the whole panel. Unfortunately you cannot make curved panel this way.

Actually, you could still form a curved membrane.

If you had a low pressure low volume air source pushing from behind, you could flex the bubble as much, or as little as you want.

I think I'm gonna love this thread

-Casey

[APi]

Originally posted by valveitude
If you had a low pressure low volume air source pushing from behind, you could flex the bubble as much, or as little as you want.

Hold that right between stators 1-2 mm apart without any change to touch them even if someone walks by or open the window. Add some kilovolts bias and ionize everything around it. Sounds as instabile as plasma in ITER!

There is one more problem. Water is very good breeding ground for microbes. First you must make the liquid denatured, maybe use even a UV-lamp. And somehow be able to wash stators time to time inside if bubbles pops and wet them.

Still... Liquid speaker would be great!

[valveitude]

OK, this "whacky" idea has really got me thinkin'

Wouldn't it be possible to replace the crosslinks in the bubble "chain" with serations (spl?) on the upright(s)? The irregular surface should grab the solution, and pull it up. A soap bubble Jacobs Ladder if you will. If this worked, it would simplify the mechanics significantly. Basically two serated wires slowly spinning in a continual loop.



-Casey

Edit:Spelling

[mightydub]

The ideal speaker for Lawrence Welk or Don Ho music!

(if you get it, you remember the 60's)

[APi]

Discussed with ESL gurus and this idea won´t propably work

Stators attract a bubble because they have different potential. If the bubble is not exactly in the middle the closer stator suck it immediately. That´s because the bubble doesn´t have enough tensile strength.

So what to do? Design a system that only push a bubble from each side? Er...

[valveitude]

How about a "Heil Air Motion Bubble"

Have the stators push from the sides, squeezing it.

[danielm]

Originally posted by APi
Discussed with ESL gurus and this idea won´t propably work

Stators attract a bubble because they have different potential. If the bubble is not exactly in the middle the closer stator suck it immediately. That´s because the bubble doesn´t have enough tensile strength.

So what to do? Design a system that only push a bubble from each side? Er...

So, the gurus "popped your bubble"???

[auplater]

hmmnn... there is an electrical contribution to surface tension.. i.e., if you inject electrons into a liquid, the surface tension changes...

maybe a suitable setup to modulate the surface tension of a liquid surface via polarizing opposing stators... hmmnn.. have to give this some more thought...

http://en.wikipedia.org/wiki/Electrowetting

http://www.ececs.uc.edu/devices/NDL_Research.html

one can envision a "dancing droplets" speaker.. or some such

John L.