Process for making crystalline structures having interconnected pores and high refractive index contrasts
US7168266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2003 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Jul 20, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2201/58
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Techniques for producing a glass structure having interconnected macroscopic pores, employing steps of filling polymerizable glass precursors into pores in a polymeric structure having interconnected macroscopic pores; polymerizing the precursors; and decomposing the polymers to produce a glass oxide structure having interconnected macroscopic pores. Further techniques employ steps of exposing portions of a photosensitive medium including glass precursors to an optical interference pattern; polymerizing or photodeprotecting the exposed portions and removing unpolymerized or deprotected portions; and decomposing the polymerized or deprotected portions to produce a glass structure having interconnected macroscopic pores. Techniques for filling pores of such glass structure with a material having a high refractive index, and for then removing the glass structure. Structures can be produced having interconnected macroscopic pores and high refractive index contrasts, which can be used, for example, as photonic band gaps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.