Method for preparing an article having surface layer of uniformly oriented, crystalline, organic microstructures
US5039561A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1988 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | Nov 14, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/44
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Method of preparing an article comprising a substrate bearing a microlayer which comprises uniformly oriented, crystalline, solid, organic microstructures. The microstructures may be mono- or polycrystalline. In the preferred embodiment, the microstructures are of uniform shape and size. The articles can be prepared by (1) vapor-depositing an organic compound as a thin, continuous film onto a substrate to provide a composite, and (2) annealing the composite in a vacuum sufficiently to induce a physical change in the original deposited film to form the microstructures. The microlayer can be overcoated with other materials to provide desired properties to the article. Articles of this invention are useful for many forms of light trapping, energy absorption, imaging, data transmission and storage, and gradient index applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.