ions and rubber, 20-20KHz, I don't get how it works...

[kenpeter]

Transparent artificial muscle plays music to prove a point
Transparent Artificial Muscle Plays Music to Prove a Point

 

[JonSnell Electronic]

Very misleading and connected to a host of advertising!

 

[cyclecamper]

Cool! But moving ions instead of electrons...do you use pipes and tubing instead of wires? I'm still reading, but this is interesting.