Patent ID: 6516633
Filing Date: 2003-02-11
Classification: B82Y,C03B,C03C,G01N,Y10S,Y10T

Abstract:
A method of preparing a photochromic glass nanoparticle, the method comprising:obtaining a first precursor reverse microemulsion having micelles comprising a water-soluble silver salt and glass-forming components; obtaining a second precursor reverse microemulsion having micelles comprising a halide salt and an initiator of glass formation; a mixing the first and the second reverse microemulsions together such that the components of the micelles of the first precursor reverse microemulsion react with the components of the micelles of the second precursor reverse microemulsion; to give a nanoparticle comprising one or more silver halide particles embedded in glass, the nanoparticle exhibiting a light-induced, reversible darkening.