Diamond shell fabricated by using porous particle and the fabrication method thereof
US8048494B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2006 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Jul 5, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249957
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A hollow diamond shell with a size of a few micrometer to hundreds of micrometer and having a geometrical shape and its fabrication method are disclosed. A diamond film is deposited by a CVD method and porous grits are used as a victim substrate to be etched later, so that the substrate can be easily removed by a capillary phenomenon that an etching solution can be intensively absorbed in a substrate etching process. Thus, a perfect diamond shell with only a plurality of fine pores with a nano size without any conspicuous opening can be obtained. Also, a diamond shell with a small opening of below 10 percent of the surface area of grits can be fabricated by controlling a nuclear generation of diamond particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.