The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 04, 2010
Filed:
Mar. 26, 2007
Nano-scale metal oxide, oxyhalide and oxysulfide scintillation materials and methods for making same
Brent Allen Clothier, Niskayuna, NY (US);
Sergio Paulo Martins Loureiro, Saratoga Springs, NY (US);
Alok Srivastava, Niskayuna, NY (US);
Stanley John Stoklosa, Clifton Park, NY (US);
Steven Jude Duclos, Clifton Park, NY (US);
Venkat Subramaniam Venkataramani, Clifton Park, NY (US);
Brent Allen Clothier, Niskayuna, NY (US);
Sergio Paulo Martins Loureiro, Saratoga Springs, NY (US);
Alok Srivastava, Niskayuna, NY (US);
Stanley John Stoklosa, Clifton Park, NY (US);
Steven Jude Duclos, Clifton Park, NY (US);
Venkat Subramaniam Venkataramani, Clifton Park, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
Crystalline scintillator materials comprising nano-scale particles of metal oxides, metal oxyhalides and metal oxysulfides are provided. The nano-scale particles are less than 100 nm in size. Methods are provided for preparing the particles. In one method, used to form oxyhalides and oxysulfides, metal salts are dissolved in water, and then precipitated out as fine particles using an aqueous base. After the particles are separated from the solution, they are annealed under a flow of a water saturated hydrogen anion gas, such as HCl or HS, to form the crystalline scintillator particles. The other methods take advantage of the characteristics of microemulsion solutions to control droplet size, and, thus, the particle size of the final nano-particles. For example, in one method, a first micro-emulsion containing metal salts if formed. The first micro-emulsion is mixed with an aqueous base in a second micro-emulsion to form the final nano-scale particles.