Electroactive polymers | Wikipedia audio article
Channel: wikipedia tts
Date: 14/01/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Electroactive_polymers


00:01:12 1 History
00:06:26 2 Types
00:06:46 2.1 Dielectric
00:07:51 2.1.1 Ferroelectric polymers
00:08:36 2.1.2 Electrostrictive graft polymers
00:09:31 2.1.3 Liquid crystalline polymers
00:10:32 2.2 Ionic
00:11:43 2.2.1 Electrorheological fluid
00:12:24 2.2.2 Ionic polymer-metal composite
00:13:32 2.2.3 Stimuli-responsive gels
00:14:53 3 Comparison of dielectric and ionic EAPs
00:16:11 4 Characterization
00:16:37 4.1 Stress–strain curve
00:17:25 4.2 Dynamic mechanical thermal analysis (DMTA)
00:18:37 4.3 Dielectric thermal analysis (DETA)
00:19:34 5 Applications
00:20:11 5.1 Artificial muscles
00:20:44 5.2 Tactile displays
00:22:32 5.3 Microfluidics
00:25:53 6 Future directions
00:27:26 7 See also



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SUMMARY
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Electroactive polymers, or EAPs, are polymers that exhibit a change in size or shape when stimulated by an electric field. The most common applications of this type of material are in actuators and sensors. A typical characteristic property of an EAP is that they will undergo a large amount of deformation while sustaining large forces.
The majority of historic actuators are made of ceramic piezoelectric materials. While these materials are able to withstand large forces, they commonly will only deform a fraction of a percent. In the late 1990s, it has been demonstrated that some EAPs can exhibit up to a 380% strain, which is much more than any ceramic actuator. One of the most common applications for EAPs is in the field of robotics in the development of artificial muscles; thus, an electroactive polymer is often referred to as an artificial muscle.