Ferrofluid Speaker?

[alan2here]

I was wondering if a setup envolving an electromagnet of alternating strength (of feild) and ferrofulid could create sound. I noticed that the ferrofluid I have seems to get smaller when neer a magnet as it is all sqashed together and expands somewhat when on its own. If this was done fast enough sound waves could be produced?

[YT2095]

it still lacks the surface area to impart much force on the air, enough to propagate sound.

also it`s viscosity is so high it will not function anywhere even Close to the KHz region (~1K is only middle C).

 

sorry dude, the idea is flawed badly, although ferrofluid Does serve a good purpose in some speakers as a Cooling agent but that`s about it

[alan2here]

ty :¬)

 

So only good for deep bass, and watering it down would reduce it's effectivness.

 

I would think the amount of power into the coil would determin how much of it's surface it could move?

 

I was thinking it could also be intresting from a directional sound POV as it can be not a flat surface like a speaker but more this shape. http://scienceblogs.com/moleculeoftheday/images/ferrofluid.jpg

 

It can also be more of a flat dome shape it depends on how the magnets are arranged.

 

I guess fine iron flilings could be intresting too, but possibly even more viscoss and so more useless but never the less worth experimenting with.

 

I suck too much as electronics to make AC.

[Klaynos]

I think the viscosity would be too high.

 

It might be easier for you to use an electromagnet from an existing speaker?

[alan2here]

Good idea Klaynos