Ultra-black coating due to surface morphology
US4361630A · kind A · utility
20Cited by
10References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 18, 1981 |
| Grant date | Nov 30, 1982 |
| Priority date | — |
| Expiry date | Aug 18, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24355
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention provides a method of producing an ultra-black surface coating, having an extremely high light absorption capacity, on a substrate, such as a metal, ceramic, glass, or plastic, the blackness being associated with a unique surface morphology consisting of a dense array of microscopic pores etched into the surface, as well as the resulting coated substrate. The ultra-black surface, which has a spectral reflectance on the order of about from 0.5 to 1.0% at wavelengths of light of about from 320 to 2140 nanometers, finds use as a solar collector in the field of solar energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.