Transparent gel-based audio speaker

A few ideas:

- Exhibition window with the upper part of the window being a speaker.

- Surface on the iPhone that isn't touch sensitive could be a speaker glass.

- Car windows becomes huge speaker.

I love inventions :)

Beyond the question of the audio speaker, we're talking about the ability to conduct ions and that itself has a lot of applications for conductivity. In particular, it means that you could create interesting safety devices and finally have really interesting wearable technology. Honestly, nobody wants wires, but people are okay wearing gels and spandex for their devices.

Noting the deformations at certain frequencies, could an adjustable lens be made out of this material?

That was pretty impressive. I can't even begin to imagine the applications.

I feel like sandwiching some phosphorus into that and hitting it with some high voltage AC current, just for kicks. The electroluminiscence should make for an interesting light display.

Speakers that visualize your music as it plays. Play the 1812 overture and it actually goes up in smoke.