Are there any inexpensive ways to make a material flex/contract when an electrical current is applied to it? Answered
I'm working on a small-scale prototype toy and it would be nice to have the ability to apply a charge to a piece of material and have it flex or contract.
I kind of see it working a bit like a mechanical solenoid (and that is a possible option here although they would have to be tiny!) in that if the material looks like ____________ to begin with, when you apply a charge to it it becomes like __/\__ (excuse the poor ascii art!)