Magnetically deformable ferrofluids and mirrors
US8444280B2 · kind B2 · utility
2Cited by
14References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2008 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Nov 18, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/64
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a process for the preparation of a suspension of magnetic particles in a polar carrier liquid. The process includes the step of: coating the surface of the magnetic particles with an organic ligand having a hydrophilic chain prior to the suspension. For preparing a magnetically deformable mirror, the suspension of magnetic particles in a polar carrier liquid is coated with a reflective surface layer. A ferrofluid includes a suspension of magnetic particles coated with an organic ligand having a hydrophilic chain in a polar carrier liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.