Elastic/Rubber Electric Contract & Relax - Find Answers

  • Context: Undergrad 
  • Thread starter Thread starter brettleon123
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Discussion Overview

The discussion centers on the search for a type of elastic or rubber material that contracts when subjected to electricity and relaxes once the electrical stimulus is removed. Participants explore various materials and concepts related to this phenomenon, including artificial muscles and electroactive materials.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the existence of elastic/rubber materials that contract and relax with electrical stimulation.
  • Another participant mentions artificial muscles, suggesting a potential connection to the original inquiry.
  • A different participant references piezoelectricity, noting that most piezoelectric materials are brittle ceramics, but highlights ongoing research into organic piezoelectric materials that could be more flexible.
  • One participant suggests using PVDF as a softer, more flexible option for small actuation.
  • Another participant introduces the concept of electroactive elastomers and their applications, indicating a broader category of materials that may fit the inquiry.
  • One participant notes that rubber contracts slightly when heated, which may relate to the thermal properties of the materials discussed.

Areas of Agreement / Disagreement

Participants express various viewpoints and propose different materials and concepts, indicating that there is no consensus on a specific solution or material that meets the original inquiry.

Contextual Notes

The discussion includes references to specific materials and their properties, but lacks detailed exploration of the assumptions or limitations of each proposed solution. The relationship between electrical stimulation and material response remains partially defined.

Who May Find This Useful

Individuals interested in materials science, robotics, and applications of electroactive materials may find this discussion relevant.

brettleon123
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I am searching for an type of elastic/rubber that once subjected to electricity contracts and then once released from electricity it relaxs again. is there such thing and if so what. if not is there anything slightly alternative.
 
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This reminds me of artificial muscles that are used by people experimenting with robot contruction.

Or is that something completely different that what you are after?

Torquil
 
100% spot on is there anything out there?
Brett
 
Mechanical reaction under electric stimulus is termed piezoelectricity. Most of the available piezoelectric materials are ceramic in nature, and as such, brittle. Considerable research is being done on organic piezoelectric materials, which might be usefull for your case. For the moment, getting a flexible piezoelectric material is an open issue, as you can see here:
http://www.inhabitat.com/2010/01/28/scientist-develop-flexible-energy-harvesting-rubber-sheets/
My advice without further details would be using pvdf ( softer, and somehow "printable" in rubber) for small actuation. Here's some link found by searching for flexible piezoelectric pvdf that might match your interest
http://www.emeraldinsight.com/Insight/ViewContentServlet?Filename=Published/EmeraldFullTextArticle/Articles/0870210206.html
 
I think rubber contracts slightly when heated
 
There's also materials known as electroactive elastomers, electroelastomers, etc:

Electroelastomer rolls and their application for biomimetic walking robots, Qibing Pei, Ron Pelrine, Scott Stanford, Roy Kornbluh and Marcus Rosenthal

Synthetic Metals
Volumes 135-136, 4 April 2003, Pages 129-131
Proceedings of the International Conference on Science and Technology of Synthetic Metals
 

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