摘要:
Provides is a compound semiconductor substrate about which the thickness of its nitride semiconductor single crystal layer can be made large while the generation of cracks, crystal defects or the like is restrained in the nitride semiconductor single crystal layer. The substrate has a first intermediate layer 110 formed on a Si single crystal substrate 100 having a crystal plane orientation of {111}. In the layer 110, a first metal compound layer 110a made of any one of TiC, TiN, VC and VN, and a second metal compound layer 110b made of any one of compounds which are different from the compound of the first metal compound layer out of TiC, TiN, VC and VN are laminated in this order alternately each other over the Si single crystal.
摘要:
A material for an optical circuit-electrical circuit mixedly mounting substrate comprises a light permeable resin layer, and an optical circuit forming layer that is made of a light permeable resin of which refractive index increases (or decreases) when irradiated with an activating energy beam and is disposed adjacent to the light permeable resin layer, wherein a refractive index of a portion of the optical circuit forming layer is higher (or lower) than that of the light permeable resin layer when the material for the optical circuit-electrical circuit mixedly mounting substrate is irradiated with an activating energy beam so that said portion is irradiated.
摘要:
A material for an optical circuit-electrical circuit mixedly mounting substrate comprises a light permeable resin layer, and an optical circuit forming layer that is made of a light permeable resin of which refractive index increases (or decreases) when irradiated with an activating energy beam and is disposed adjacent to the light permeable resin layer, wherein a refractive index of a portion of the optical circuit forming layer is higher (or lower) than that of the light permeable resin layer when the material for the optical circuit-electrical circuit mixedly mounting substrate is irradiated with an activating energy beam so that said portion is irradiated.
摘要:
A back electrode 6 is formed in the back of a Si single crystal substrate 2 of a compound semiconductor in which an n-type 3C-SiC single crystal buffer layer 3 having a thickness of 0.05-2 μm, a carrier concentration of 1016-1021/cm3, a hexagonal InwGaxAl1-w-xN single crystal buffer layer 4 (0≦w
摘要翻译:背面电极6形成在化合物半导体的Si单晶衬底2的背面,其中厚度为0.05-2μm的n型3C-SiC单晶缓冲层3,载流子浓度为10 16×10 21 / cm 3,六方晶系Al x 厚度为0.01-0.5μm的1-wx N单晶缓冲层4(0 <= w <1,0 <= x <1,w + x <1)和n型六方晶系 在Al 3 O 3中,单晶层5(0 <= y <1,0 3 <! - SIPO - >,并且在六方晶系AlGaN / N单晶层5,以提供化合物 导致很少的能量损失并且允许高效率和高的击穿电压的半导体器件。
摘要:
A toner binder for dry toners which comprises a polyester; and a process for producing the toner binder. A known conventional technique for imparting low-temperature fixing property and anti-hot offset property to a toner binder is to use a mixture of two powdery polyesters. However, when the two polyesters mixed differ greatly in softening point, the effect of mixing is not obtained and pigments show poor dispersibility during toner production. The toner binder and the process eliminate these problems. The toner binder comprises aggregates of binder resin particles comprising two polyesters (A) and (B), wherein the polyester (A) has a higher softening point than the polyester (B) and the polyesters (A) and (B) have been evenly mixed in each particle. The process for producing a toner binder is characterized by melt-mixing the two polyesters (A) and (B) at 80 to 180° C. The toner binder is used mainly as an ingredient for dry toners.
摘要:
A substrate 1 for growing an electro-optical single crystal thin film in which two or more layers of buffer layers 3, 4, and 5 for buffering lattice mismatch between Si and BTO are formed on an Si (001) substrate 2 is provided as a substrate for growing an electro-optical single crystal thin film which can obtain an electro-optical single crystal thin film of BTO single crystal thin film 6 etc. with a large size and a very high quality.
摘要:
The present invention relates to a thermoplastic elastomer composition having a three-dimensional network structure which is not formed by a chemical crosslinking and having an excellent elasticity recovery and flexibility, a foam having a highly closed cell, an uniform cell shape, an excellent elasticity recovery, flexibility and appearance, and a process for producing the same. A thermoplastic elastomer of the invention is obtained by mixing in a predetermined ratio an EPDM (1), a crystalline polyethylenic resin (2) and a block copolymer (3) having a crystalline ethylenic polymeric block and a block which is more compatible with said EPDM than with said crystalline polyethylenic resin together with an anti-aging agent followed by kneading in a pressurized kneader. A foam of the invention is obtained by adding 1 part by mass of a wetting agent to 100 parts by mass of the thermoplastic elastomer composition described above together with a foaming agent, agitating and then performing an extrusion foaming.
摘要:
In antenna device which is to be used in a portable radio receiver, plural loop antennas 1 and 3 which are formed along different faces of a case 9 of the radio receiver, respectively, and switching means 5 for selecting one of received signals from the plural loop antennas are disposed. Reception is performed while selecting a loop antenna having a higher received signal level. When an antenna having the directivity or the plane of polarization which are more advantageous is selected, it is possible to ensure high reception performance.
摘要:
A germanium layer 19 is melted on top of a starting polycrystalline silicon ingot 18, at a temperature below the melting point of pure silicon. Silicon is dissolved at the interface and floats to the top of the germanium melt to form a silicon melt layer 11, from which a crystal 20 can be drawn. The process permits the production of large diameter crystal with low oxygen content and no more than one percent germanium.
摘要:
A charge controller for an electrophotographic toner is disclosed which comprises a graft or block copolymer comprising:(a) a polymer moiety having an alkyl group containing 6-50 carbon atoms and a carboxyl group, said moiety being selected from the group consisting of: a moiety of a polymer or a copolymer containing at least 5 mol. % of monomer units of a monoalkyl ester of an .alpha.,.beta.-ethylenically unsaturated dicarboxylic acid, containing 6-50 carbon atoms in the alkyl group; and a moiety of a copolymer containing 5-75 mol. % of monomer units of a carboxylic group-containing .alpha.,.beta.-ethylenically unsaturated monomer, and 6-80 mol. % of monomer units of an ethylenically unsaturated monomer having an alkyl group containing 6-50 carbon atoms; and(b) a polymer moiety, bound graft-wise or block-wise thereto, said moiety (b) being selected from the group consisting of a styrenic polymer moiety, and a polyester moiety.The charge controller of the present invention can be used for an electrophotographic toner charging negatively by combining it with a toner binder and a colorant. As a charge controller of the invention has an excellent dispersing property in the toner, the toner is excellent in such properties as the electrostatic charge, the charging rate and transparency in using a color toner.