Systems and methods for heat dissipation are described. Systems and methods may include a gradient nanoparticle structure applied to a substrate, such as electrical transmission, distribution lines, to photovoltaic cells, and/or batteries of transportation vehicles and electronic devices.

A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. A dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (Sr.sub.1.00stBa.sub.sCa.sub.t).sub.6.00xR.sub.x(Ti.sub.1.00aZr.sub.a).sub.x+2.00(Nb.sub.1.00bTa.sub.b).sub.8.00xO.sub.30.00, in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.70s1.00, 0t0.30, 0.70s+t1.00, 0x0.50, 0.10a1.00, and 0b1.00. At least one or more elements selected from Mn, Mg, Co, V, W, Mo, Si, Li, B, and Al arc contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.

A thermally conductive insulator consisting essentially of a silicon nitride member, comprise: a first region provided 10 m or more away from a first surface of the member along a depth direction in a section vertical to the first surface and containing at least one substance selected from the group consisting of silicon carbide and a carbon material; and a second region provided between the first surface and the first region. A concentration of silicon nitride of the second region is higher than a concentration of silicon nitride of the first region.

A polycrystalline dielectric thin film and capacitor element has a small dielectric loss tan . The polycrystalline dielectric thin film, in which the main composition is a perovskite oxynitride. The perovskite oxynitride is expressed by the compositional formula AaBbOoNn (a+b+o+n=5), where a/b>1 and n0.7.

An insulated electric wire is provided with a metal conductor, and an insulation coating layer covering an outer periphery of the metal conductor. The insulation coating layer includes a lubricant layer including fluorine-based fine particles as a lubricant as an outermost layer, and an enamel insulation layer including fluorine-based fine particles as an inner layer with respect to the lubricant layer.

An insulated electric wire is provided with a metal conductor, and an insulation coating layer covering an outer periphery of the metal conductor. The insulation coating layer includes a lubricant layer including fluorine-based fine particles as a lubricant as an outermost layer, and an enamel insulation layer including fluorine-based fine particles as an inner layer with respect to the lubricant layer.

[Problem] The aim of the present invention lies in providing a glass ceramic sintered compact in which dielectric loss in a high-frequency region is reduced, without any reduction in sintering density, and also in providing a wiring board employing same. [Solution] A glass ceramic sintered compact containing a glass component, a ceramic filler and a composite oxide, characterized in that the glass component is crystallized glass on which is deposited a diopside oxide crystal phase including at least Mg, Ca and Si, and the composite oxide includes at least Al and Co.

A photosensitive glass paste contains a photosensitive organic component and an inorganic component containing a glass powder having a high softening point, a glass powder having a low softening point, and a ceramic filler. The ceramic filler has a thermal expansion coefficient of 1010.sup.6/ C. to 1610.sup.6/ C., the inorganic component contains 30% to 50% by volume of the ceramic filler, and the inorganic component contains 0.5% to 10% by volume of the glass powder having a low softening point.

A coated electrical accessory includes a bare electrical accessory and a substantially inorganic and dried coating layer coating the bare electrical accessory. The coating layer includes a heat radiating agent and a binder. When the coated electrical accessory is tested in accordance with ANSI CI 19.4-2004 with an amount of imparted current, the coated electrical accessory exhibits an operating temperature that is less than an operating temperature of a bare electrical accessory tested in accordance with ANSI CI 19.4-2004 with the same amount of imparted current. Methods are also provided.

A coated electrical accessory includes a bare electrical accessory and a substantially inorganic and dried coating layer coating the bare electrical accessory. The coating layer includes a heat radiating agent and a binder. When the coated electrical accessory is tested in accordance with ANSI CI 19.4-2004 with an amount of imparted current, the coated electrical accessory exhibits an operating temperature that is less than an operating temperature of a bare electrical accessory tested in accordance with ANSI CI 19.4-2004 with the same amount of imparted current. Methods are also provided.