Multicolored polymer nanocomposites for optical memory storage and security data encryption
US6974618B2 · kind B2 · utility
5Cited by
3References
54Claims
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Key dates
| Filing date | Jan 16, 2004 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Feb 8, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical data storage device comprised of periodic nanostructured polymer-based material produced from core-shell particles containing one dye in the core and a second dye in the shell. The combinations of dyes can be UV-Vis-dyes or Vis-NIR or UV-NIR. It is shown that selective single-photon photobleaching of the two dyes leads to increase in density of data storage and allows one to employ single-photon photobleaching to achieve the same storage density as in two-photon-writing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.