Abstract:
The present invention is directed to an article comprising a dielectric layer formed from any solution composition that can form barium titanate during firing and containing manganese in an amount between 0.002 and 0.05 atom percent of the solution composition, wherein the dielectric layer has been formed on metal foil and fired in a reducing atmosphere.
Abstract:
A surface modification method comprising bringing, into a high-temperature flame formed by use of a combustible gas and a combustion-supporting gas, inorganic oxide powder A having an average particle size falling within a range of 0.5 to 200 μm as measured by means of laser diffraction/scattering particle size analysis and inorganic oxide powder B having a particle size calculated on the basis of its BET specific surface area of 100 nm or less, to thereby modify the surfaces of particles of the powder A by means of the particles of the powder B. A surface modification method comprising bringing, into a high-temperature flame formed by use of a combustible gas and a combustion-supporting gas, the inorganic oxide powder A; and bringing again the resultant powder into the high-temperature flame, to thereby modify the surfaces of particles of powder A.
Abstract:
Electronic devices prepared from nanoscale powders are described. Methods for utilizing nanoscale powders and related nanotechnology to prepare capacitors, inductors, resistors, thermistors, varistors, filters, arrays, interconnects, optical components, batteries, fuel cells, sensors and other products are discussed.
Abstract:
A novel process for preparing chromium dioxide of substantially high purity as well as composites of CrO2/Cr2O3 and CrO2/Cr2O5 following a sequence of simple steps. The process does not require pressure as a control parameter during the process of synthesis. No chemical modifier has been used to bring down the working pressure during synthesis. Fairly hard sintered pellets of CrO2 can be obtained without introducing any detectable impurity phase that usually appears during the process of sintering. Further, CrO2/Cr2O3 and CrO2/Cr2O5 composites have also been prepared where the fraction of insulating Cr2O3 or Cr2O5 in metallic CrO2 can be easily controlled. Significant negative magnetoresistance is found in pure CrO2 (5% MR) as well as CrO2/Cr2O3 (33% MR) composites near room temperature. The MR studies on the CrO2/Cr2O5 composites have been done and significant negative MR (22%) has been found in CrO2/Cr2O5 composites near room temperature.
Abstract translation:一种用于制备基本上高纯度的二氧化铬以及CrO 2 / Cr 2 O 3 N 3和CrO 2 2的复合材料的新方法 按照简单步骤的顺序进行。 该方法在合成过程中不需要作为对照参数的压力。 没有使用化学改性剂降低合成过程中的工作压力。 可以在不引入在烧结过程中通常出现的任何可检测的杂质相的情况下获得CrO 2 2的非常硬的烧结颗粒。 此外,CrO 2 / Cr 2 O 3和CrO 2 / Cr 2 O 3和/ 还制备了O 5复合物,其中绝缘Cr 2 O 3 O 3或Cr 2 O 3的比例 5 SUB>可以容易地控制。 在纯CrO 2(5%MR)以及CrO 2 / Cr 2 O 3 3中发现显着的负磁阻。 SUB>(33%MR)复合材料在室温附近。 已经完成了对CrO 2 / Cr 2 O 5复合物的MR研究,并且在CrO中已经发现显着的负MR(22%) 在室温附近的复合材料是2×2 sub> 2 sub> 5。
Abstract:
A method for producing complex metal oxide having nano-sized grains that includes the steps of forming a mixture containing at least one metal cation dissolved in a solution and particulate material containing at least one further metal in the form of metal(s) or metal compound(s) and treating the mixture to form the complex metal oxide having nano-sized grains. The at least one further metal from the particulate material becomes incorporated into the complex metal oxide.
Abstract:
A first electrophoretic medium comprises an electrically charged particle suspended in a suspending fluid, the particle having a polymeric shell having repeating units derived from at least one monomer the homopolymer of which is incompatible with the suspending fluid. A second, similar electrophoretic medium comprises a suspending fluid, and first and second types of electrically charged particle suspended in the suspending fluid, the two types of particle having differing optical characteristics but both having polymeric shells. The polymeric shells are arranged such that homoaggregation of the two types of particles is thermodynamically favored over heteroaggregation.
Abstract:
In electrophoretic media, it is advantageous to use pigment particles having about 1 to 15 per cent by weight of a polymer chemically bonded to, or cross-linked around, the pigment particles. The polymer desirably has a branched chain structure with side chains extending from a main chain. Charged or chargeable groups can be incorporated into the polymer or can be bonded to the particles separately from the polymer. The polymer-coated particles can be prepared by first attaching a polymerizable or polymerization-initiating group to the particle and then reacting the particle with one or more polymerizable monomers or oligomers.
Abstract:
Compositions including modified carbide-containing nanorods and/or modified oxycarbide-containing nanorods and/or modified carbon nanotubes bearing carbides and oxycarbides and methods of making the same are provided. Rigid porous structures including modified oxycarbide-containing nanorods and/or modified carbide containing nanorods and/or modified carbon nanotubes bearing modified carbides and oxycarbides and methods of making the same are also provided. The compositions and rigid porous structures of the invention can be used either as catalyst and/or catalyst supports in fluid phase catalytic chemical reactions. Processes for making supported catalyst for selected fluid phase catalytic reactions are also provided.