Mechanoluminescence material and process for producing the same
US7258817B2 · kind B2 · utility
2Cited by
6References
3Claims
0Family size
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Key dates
| Filing date | Jul 24, 2003 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Feb 24, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21K2/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A mechanoluminescence material comprising a matrix of composite metal oxide containing strontium and aluminum, represented by the general formula SrM1Al6O11 (wherein M1 is an alkaline earth metal) or SrM2Al3O7 (wherein M2 is a rare earth metal), and further comprising, as luminescence centers, a metal selected from among rare earth metals and transition metals capable of emitting light when a carrier having been excited by mechanical energy returns to its ground state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.