Actuator
US8715531B2 · kind B2 · utility
1Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2009 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Dec 19, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B1/122
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A conductive polymer doped with a dopant can be expanded and contracted when electrically oxidized and reduced in a driving electrolytic solution containing an anion, and thereby can act as an actuator element in an actuator. The anion is a fluorine-containing ion derived from a strong acid, and the dopant is an aromatic sulfonate ion free of fluorine. The conductive polymer is a polymer containing a 5-membered heterocyclic moiety as a repeating unit, such as a polypyrrole or a polythiophene. When the conductive polymer is in an oxidized state, at least part of the 5-membered heterocyclic moieties has a carbonyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.