Reduction of driving voltage in a switchable element
US7251392B2 · kind B2 · utility
38Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2004 |
| Grant date | Jul 31, 2007 |
| Priority date | — |
| Expiry date | May 5, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A switchable element is described, which comprises a fluid chamber (111) containing a polar (101) and a non-polar (102) liquid, which are immiscible. The element is further provided with two electrodes (103,104), which are arranged to control the spatial distribution of the liquids, by means of an applied voltage across two the two electrodes. By the addition of surfactant to one or both of the liquids, the actuation voltage of the element is lowered. The element can work for example as an optical device or a motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.