Encapsulated particles
First Claim
1. A material composition, comprising:
- a plurality of particles, wherein each particle comprises a core and a shell encapsulating the core, the shell comprising at least one atomic element not included in the core,wherein the cores have;
a median maximum dimension that is less than 10 microns, anda median of at least one axial dimension that is in the range of 10 nm to 500 nm, andwherein the shells have;
a median thickness that is less than 100 nm,a silicon concentration that is in the range of 10% to 50% on the basis of the weight of the shells, andan aluminum concentration that is in the range of 0.01% to 5% on the basis of the weight of the shells,wherein the shells have a ratio of the aluminum concentration to the silicon concentration in the range of 1;
20 to 1;
5000 such that the median thickness does not change by more than 10% when measured 24 hours after immersing in water.
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Accused Products
Abstract
The disclosed technology relates generally to material systems which include a plurality of particles and methods of making the same. The particles have a core and a shell which encapsulates the core and has at least one atomic element not included in the core. The cores of the particles have a median maximum dimension that is less than 10 microns and a median of at least one axial dimension that is between 10 nm and 500 nm. The shells of the particles have a median thickness that is less than 100 nm, a silicon concentration that is between 10% and 50% on the basis of the weight of the shells, and an aluminum concentration that is between 0.01% and 5% on the basis of the weight of the shells.
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Citations
49 Claims
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1. A material composition, comprising:
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a plurality of particles, wherein each particle comprises a core and a shell encapsulating the core, the shell comprising at least one atomic element not included in the core, wherein the cores have; a median maximum dimension that is less than 10 microns, and a median of at least one axial dimension that is in the range of 10 nm to 500 nm, and wherein the shells have; a median thickness that is less than 100 nm, a silicon concentration that is in the range of 10% to 50% on the basis of the weight of the shells, and an aluminum concentration that is in the range of 0.01% to 5% on the basis of the weight of the shells, wherein the shells have a ratio of the aluminum concentration to the silicon concentration in the range of 1;
20 to 1;
5000 such that the median thickness does not change by more than 10% when measured 24 hours after immersing in water. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of preparing a material composition, comprising:
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providing a plurality of particle cores; encapsulating the particle cores with shells comprising at least one atomic element not included in the cores; and incorporating aluminum into the shells by exposing the shells to an aluminum-containing material to thereby provide a plurality of particles, wherein the particle cores have; a median maximum dimension that is less than 10 microns, and a median of at least one axial dimension that is in the range of 10 nm to 500 nm, and wherein the shells have; a median thickness that is less than 100 nm, a silicon concentration that is in the range of 10% to 50% on the basis of the weight of the shells, and an aluminum concentration that is in the range of 0.01% to 5% on the basis of the weight of the shells, wherein the shells have a ratio of the aluminum concentration to the silicon concentration in the range of 1;
20 to 1;
5000 such that the median thickness does not change by more than 10% when measured 24 hours after immersing in water. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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Specification