Abstract: A piezoelectric and/or pyroelectric composite solid hybrid material, includes: a solid dielectric matrix, a filler of at least one inorganic piezoelectric and/or pyroelectric material, wherein the filler includes filiform nanoparticles distributed throughout the volume of the solid dielectric matrix with an amount by volume of less than 50%, and in that the main directions of elongation of the filiform nanoparticles of the inorganic filler distributed in the dielectric matrix have a substantially isotropic distribution in the solid dielectric matrix.

Abstract: A lead-based particulate piezoelectric material has a median diameter of less than 1 ?m and a particle size distribution expressed by [arithmetic deviation/mean] of no greater than 15% and in which no less than 85% of all particles are cubic.

Abstract: A material for a solid oxide fuel cell including a compound of Chemical Formula 1: BaaSrbCoxFeyM1-x?yO3-???Chemical Formula 1 wherein M represents at least one of a transition metal element or a lanthanide element, a and the b are in a range of 0.4?a?0.6 and 0.4?b?0.6, respectively, x and y are in a range of 0.6?x?0.9 and 0.1?y?0.4, respectively, and ? is selected so that the compound of Chemical Formula 1 is electrically neutral.

Abstract: There are provided a method of manufacturing a ceramic powder having a perovskite structure and a ceramic powder having a perovskite structure manufactured by the same. The method includes: mixing a compound of an element corresponding to site A in an ABO3 perovskite structure as well as a compound of an element corresponding to site B in the same structure, with supercritical water in a continuous mode to form seed crystals; and mixing the seed crystals in a batch mode to conduct grain growth thereof.

Abstract: A method for preparing yttrium barium copper oxide (“YBCO”; “Y-123”; YBa2Cu3O7-x) superconducting nanoparticles is disclosed. The YBCO superconducting nanoparticles are prepared via a solid-state reaction by a solid-state reaction of an yttrium precursor, a barium precursor, and a copper precursor. One or more of the precursors are metal chelate compounds having acetylacetone ligands, which are highly stable and have a high compatibility with the other precursors.

Abstract: Provided is an environmental gas sensor including an insulating substrate, a metal electrode formed above the insulating substrate, and a sensing layer formed of a semiconductor oxide nanofiber-nanorod hybrid structure above the metal electrode. The environmental gas sensor can have excellent characteristics of ultra high sensitivity, high selectivity, high responsiveness and low power consumption by forming a semiconductor oxide nanorod having high sensitivity to a specific gas on a semiconductor oxide nanofiber.

Abstract: The present invention is related to producing fine nano or submicron-scale precision ceramic powder by applying an innovative chemical reactor with powder collection to the glycine-nitrate combustion process (GNC-P). The unique feature lies in the utilization of a simple-operating process to massively produce nano or submicron-scale ceramic oxide powder with multiple metal components. The present invention not only provides very high powder collection efficiency and production yield as well as safety but also satisfies requirements of industrial safety and environmental safety, and lowers production cost.

Abstract: A process for growth of boron-based nanostructures, such as nanotubes and nanowires, with a controlled diameter and with controlled chemical (such as composition, doping) as well as physical (such as electrical and superconducting) properties is described. The boron nanostructures are grown on a metal-substituted MCM-41 template with pores having a uniform pore diameter of less than approximately 4 nm, and can be doped with a Group Ia or Group IIa electron donor element during or after growth of the nanostructure. Preliminary data based on magnetic susceptibility measurements suggest that Mg-doped boron nanotubes have a superconducting transition temperature on the order of 100 K.

Abstract: Nanoparticles comprising tungsten, methods of manufacturing nanoparticles comprising tungsten, and applications of nanoparticles comprising tungsten, such as electronics, optical devices, photonics, reagents for fine chemical synthesis, pigments, and catalysts are provided.

Abstract: A composite photocatalyst includes a semiconducting core and a nanoscale particle disposed on a surface of the semiconducting core, wherein the nanoscale particle is an electron carrier, and wherein the photocatalyst is sensitive to visible light irradiation.

Abstract: The present invention includes pure single-crystalline metal oxide and metal fluoride nanostructures, and methods of making same. These nanostructures include nanorods and nanoarrays.

Abstract: A low-temperature hydrothermal reaction is provided to generate crystalline perovskite nanotubes such as barium titanate (BaTiO3) and strontium titanate (SrTiO3) that have an outer diameter from about 1 nm to about 500 nm and a length from about 10 nm to about 10 micron. The low-temperature hydrothermal reaction includes the use of a metal oxide nanotube structural template, i.e., precursor. These titanate nanotubes have been characterized by means of X-ray diffraction and transmission electron microscopy, coupled with energy dispersive X-ray analysis and selected area electron diffraction (SAED).