Question about dielectric elastomers

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Applying DC or AC current to dielectric elastomers affects their capacitance and electric stress, which are determined by the voltage applied rather than current flow. The behavior of these materials is symmetrical and not polarity dependent unless they are polarized, such as in electrets. When AC is applied, the current's direction does not significantly alter the effect, but it can introduce harmonic distortion if not managed properly. Continuous high DC voltage can lead to different responses compared to alternating currents, particularly in terms of electric stress. Understanding these dynamics is crucial for specific applications involving dielectric elastomers.
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What happens when i apply dc current in them?
And ac aswell?
Im quite confused about them tbh.
Edit:
Dielectric*
 
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Welcome to PF.
Dielectric Elastomers are really capacitors so they have characteristics determined by the voltage applied.
Capacitance, charge stored and physical dimensions all vary with voltage and physical constraint.
DC has the same effect as AC, but with a lower frequency, you apply it, then you remove it.
You need to be more specific about your application before more helpful answers can be given.
Start by reading a bit about them: https://en.wikipedia.org/wiki/Dielectric_elastomers
 
thanks, my actual first post was deleted, i love this forum already. (just kidding)
to elaborate more and sorry for the late reply, if i apply alternating current, does the current heading cw make the same effect as the one ccw ?
also what happens if one applies continuous high dc voltage?
i read about them and i must say I am very fascinated by these polymers.
 
It is the electric stress on the capacitor dielectric that has the effect, so it is not current flow that has the effect.
Unless the material is polarised, as in an electret, the effect will be symmetrical and not polarity dependent. I would expect a sine wave to make 2'nd harmonic distortion unless DC bias voltage prevented zero crossings.
 
Baluncore said:
It is the electric stress on the capacitor dielectric that has the effect, so it is not current flow that has the effect.
Unless the material is polarised, as in an electret, the effect will be symmetrical and not polarity dependent. I would expect a sine wave to make 2'nd harmonic distortion unless DC bias voltage prevented zero crossings.
thanks.
 
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