A capacitor includes a first conductive plate, a second conductive plate, a floating conductive plate and a dielectric material separating the floating conductive plate from the first conductive plate and from the second conductive plate. The floating conductive plate has a first surface closer to the first conductive plate than to the second conductive plate and has a second surface closer to the second conductive plate than to the first conductive plate. In response to an electric field between the first conductive plate and the second conductive plate, charge separation is induced in the floating conductive plate such that a first charge induced on the first surface has a first polarity and a second charge induced on the second surface has a second polarity, where the second polarity different from the first polarity.
A capacitor can include a dielectric layer including a polymer matrix and ceramic particles dispersed with the polymer matrix. The polymer matrix can include epoxy. The ceramic powders can include composition modified barium titanate ceramic powders. In an embodiment, the capacitor can include a plurality of layers. In another embodiment, the dielectric layer can have a thickness of 0.1 microns to 100 microns.
A method of preparing purified barium nitrate includes precipitating barium nitrate crystals from a solution, and washing the barium nitrate crystals with an aqueous solution including at least 10 wt% nitric acid.
C01B 21/06 - Binary compounds of nitrogen with metals, with silicon, or with boron
B01J 19/10 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor employing sonic or ultrasonic vibrations
B01J 19/18 - Stationary reactors having moving elements inside
A power supply can include a storage component or a storage unit including a capacitive element. In an embodiment, the power supply can include an electrical energy storage unit, a transformer, switching elements, and a pulse width modulation unit. In a particular embodiment, the power supply can be configured to provide an output voltage different from the voltage supplied by the electrical energy power storage unit. In another embodiment, the power supply can include storage components having electrodes connect to different printed circuit boards. In still another embodiment, the power supply can include an output anode, an output cathode, and an input electrode connected to the storage component. In a further embodiment, the power supply circuitry can include a transformer, switching elements, a pulse width modulation unit, and an output control units coupled to an output electrode, the pulse width modulation unit, or any combination thereof.
A method of forming a dielectric powder includes depositing a metal nitrate coating on ceramic particles to form nitrate coated ceramic particles, separating the nitrate coated ceramic particles, dewatering the nitrate coated ceramic particles, and heat treating the nitrate coated ceramic particles at a temperature sufficient to convert the metal nitrate to a metal oxide, forming metal oxide coated ceramic particles.
A method of purifying an aluminum source includes dissolving an aluminum ion source to provide a first solution including aluminum ions having a pH of not greater than 4.0, adjusting the pH of the first solution with a tetraalkylammonium hydroxide solution to a pH in range of 4.1 to 8.4 thereby forming an aluminum hydroxide precipitate, separating the aluminum hydroxide precipitate from the first solution, washing the separated aluminum hydroxide precipitate with an aqueous solution having a pH in a range of 4.1 to 8.4, dissolving the washed aluminum hydroxide precipitate using an acid to provide a second solution having a pH of not greater than 4.0, and forming an aluminum salt from the second solution.
An assembly includes a plurality of energy storage components. An energy storage component is electrically coupled to at least two other energy storage components of the plurality by at least two electrical pathways, each including a fusible link. The at least two electrical pathways may be formed in a circuit board. The energy storage component may be coupled to the circuit board by a fusible link.
A furnace assembly includes first and second sections. The first section includes first and seconds ends, a first joint disposed at the first end, a conical portion at a second end, a first filter disposed between the first and second ends, and a lumen extending through the first section in fluid communication with the first filter. The second section includes first and second ends, a second joint disposed at the first end, an opening disposed at the second end and to receive the conical portion of the first section, a second filter disposed between the first and second ends, and a lumen extending through the second section in fluid communication with the second filter. When engaged, the first and second sections form a chamber between the first and second filters. The chamber is in fluid communication with the respective first ends of the first and second sections.
A furnace assembly includes first and second sections. The first section includes first and seconds ends, a first joint disposed at the first end, a conical portion at a second end, a first filter disposed between the first and second ends, and a lumen extending through the first section in fluid communication with the first filter. The second section includes first and second ends, a second joint disposed at the first end, an opening disposed at the second end and to receive the conical portion of the first section, a second filter disposed between the first and second ends, and a lumen extending through the second section in fluid communication with the second filter. When engaged, the first and second sections form a chamber between the first and second filters. The chamber is in fluid communication with the respective first ends of the first and second sections.
A printer includes a work surface and a print head disposed over the work surface. The print head and the work surface are relatively movable in associated planes. The print head includes a first nozzle to deposit a polymeric ink, a second nozzle to deposit a conductive ink, and a third nozzle to deposit a dielectric ink.
A method of forming composition-modified barium titanate ceramic particulate includes mixing a plurality of precursor materials and a precipitant solution to form an aqueous suspension. The plurality of precursors include barium nitrate, titanium chelate, and a metal or oxometal chelate. The precipitant solution includes tetraalkylammonium hydroxide and tetraalkylammonium oxalate. The method further includes treating the aqueous suspension at a temperature of at least 150° C. and a pressure of at least 200 psi, and separating particulate from the aqueous suspension after treating.
C04B 35/468 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
C01B 13/18 - Methods for preparing oxides or hydroxides in general by thermal decomposition of compounds, e.g. of salts or hydroxides
C01B 13/36 - Methods for preparing oxides or hydroxides in general by precipitation reactions in solutions
C04B 35/49 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates containing also titanium oxide or titanates
12.
HYDROTHERMAL PROCESSING IN THE WET-CHEMICAL PREPARATION OF MIXED METAL OXIDE CERAMIC POWDERS
A method of forming at least partially crystalline ceramic powder includes providing mixed metal oxide particles in an aqueous suspension in a hydrothermal treatment vessel, heating the aqueous suspension at a temperature of at least 150oC at a treatment pressure of at least 200 psi, and adding an aqueous solution having a temperature of not greater than 100oC to the hydrothermal treatment vessel while heating and while releasing steam from the hydrothermal treatment vessel.
C04B 35/01 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides
C04B 35/468 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
13.
REACTION TUBE AND HYDROTHERMAL PROCESSING FOR THE WET CHEMICAL CO-PRECIPITATION OF OXIDE POWDERS
A reactor for the wet-chemical co-precipitation of oxide powders includes a cylindrical structure having first and second ends and a lumen extending the length of the tube. A central axis extends through the lumen. The first end is closed. The reactor also includes a first inlet port disposed proximal to the first end of the cylindrical structure and providing access through the cylindrical structure to inject a first reactant solution. The reactor further includes a second inlet port disposed proximal to the first end of the cylindrical structure and providing access through the cylindrical structure to inject a second reactant solution. The first and second inlet ports are disposed on opposite sides of the cylindrical structure and are coaxial relative to the central axis.
C01B 13/36 - Methods for preparing oxides or hydroxides in general by precipitation reactions in solutions
H01B 3/10 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of inorganic substances metallic oxides
B01J 14/00 - Chemical processes in general for reacting liquids with liquidsApparatus specially adapted therefor
B01J 19/26 - Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
14.
Method of preparing ceramic powders using ammonium oxalate
Wet-chemical methods involving the use of water-soluble hydrolytically stable metal-ion chelate precursors and an ammonium oxalate precipitant can be used in a coprecipitation procedure for the preparation of ceramic powders. Both the precursor solution and the ammonium oxalate precipitant solution are at neutral or near-neutral pH. A composition-modified barium titanate is one of the ceramic powders that can be produced. Certain metal-ion chelates can be prepared from 2-hydroxypropanoic acid and ammonium hydroxide.
Wet-chemical methods involving the use of water-soluble hydrolytically stable metal-ion chelate precursors and an ammonium oxalate precipitant can be used in a coprecipitation procedure for the preparation of ceramic powders. Both the precursor solution and the ammonium oxalate precipitant solution are at neutral or near-neutral pH. A composition-modified barium titanate is one of the ceramic powders that can be produced. Certain metal-ion chelates can be prepared from 2-hydroxypropanoic acid and ammonium hydroxide.
patents
