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US 8,012,564 B2Granted
Nanoparticle dispersions with low aggregation levels
AssigneeAlcatel Lucent
InventorAshok J. Maliakal
Life of this patent
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Abstract
An apparatus comprising a substrate having a surface and a dielectric layer comprising a distribution of particles. The layer is located over the surface and has a dielectric constant of seven or more. Each particle has a particle core and a polymer shell that is chemically bonded thereto and located around the associated particle core. Each particle core includes a material having a dielectric constant of about fifteen or more. Aggregates of the particle cores having diameters of about 0.5 microns or more are substantially absent from the layer.
Claims16
An apparatus, comprising:
- a substrate having a surface;
- and
- a dielectric layer comprising a polymer medium and a distribution of particle cores within the medium, the dielectric layer being located over said surface and having a dielectric constant of seven or more,
- wherein each one of the particle cores comprises TiO2 and has a polymer shell comprising a polymer chain chemically bonded thereto via a phosphonate moiety
- wherein said polymer medium is formed from the polymer shells, and said polymer chain is selected from the group consisting of
- styrene;
- vinyl pyridine;
- methyl methacrylate;
- and
- butyl methacrylate.
7 more elements
An apparatus, comprising:
- a substrate having a surface;
- and
- a dielectric layer comprising a polymer medium and a distribution of particle cores within the polymer medium, the dielectric layer being located over said surface and having a dielectric constant of seven or more,
- wherein each one of the particle cores has a polymer shell chemically bonded thereto and located around the one of the particle cores, each particle core comprising a material having a dielectric constant of about fifteen or more, and
- wherein said polymer medium is formed from the polymer shells and the polymer shells comprise a linear methylene chain having between 6 and 20 carbon atoms and a polymer chain connected to the methylene chain.
2 more elements
Dependencies are inferred from the claim text.