Transparent Artificial Muscle Plays Music by Caroline Perry. Harvard Gazette. August 29, 2013.
The article linked above contains a video demonstration of the ionic speaker.
(1) The innovation highlighted in the article is first demonstration that _____________________ can be put to meaningful use in fast-moving,high-voltage devices.
(2) The gels used as electrolytes are ______________ making it relatively easy to _____________.
(3) Ions are the __________ of the human body, which for examples allows the heart to _________.
(4) The audio speakers represents conceptual proof that ionic conductors can used with both high __________ and ________________.
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