摘要:
An electroless plating bath for depositing a metal selected from the group consisting of Ni, Zn, As, Cd, In, Sb, Pb and alloys thereof, which contains a titanium (III) compound as a reducing agent. Typical titanium (III) compounds are titanium halides, cyclopentadienyl complex compounds of titanium (III) ions, titanium sulfate, and titanium hydroxide.
摘要:
A work holder (12) for holding a workpiece (2) while partially masking the same by use of a mask (18). The workpiece and the mask are elastically pressed against each other by an aggregate (15) of heat-resistant fiber such as metal fiber or ceramic fiber, so that the workpiece and the mask are brought into close contact with each other. This work holder is adapted to form a resistor film (9) on a part of the surface of a chip (2) to form a chip-type resistor (1), for example, by a thin film forming method such as sputtering.
摘要:
A structure of a copper conductor is obtained by oxidizing copper film formed on the surface of a substrate, and by heat treating the same in a reducing atmosphere, whereby only the surface layer portion of the oxidized copper film is reduced to become copper. The copper film of a conductor is formed on the surface of the substrate with the oxidized copper film interposed therebetween. As a result, an adhesion of the copper film to the surface of the substrate is enhanced.
摘要:
A three-dimensional component having cavities containing a photocurable resin material and having a structure in which a plurality of cured resin layers composed of the photo-cured resin material are stacked, is manufactured by stereolithography. Inorganic members are inserted into concave portions when the concave portions are formed before covering the cavities, each of the concave portions being at least portion of the corresponding cavity, and the photocurable resin material remaining. When the three-dimensional component is completed, the photocurable resin material remaining in the cavity is thermally cured, thus being brought into contact with the inorganic members. In this manner, a three-dimensional photonic structure having the plurality of inorganic members precisely disposed at desired periodic positions within the resin matrix is efficiently manufactured.
摘要:
There is provided a three dimensional periodic structure comprising two substances having different dielectric constants with a high contrast between the dielectric constants or refractive indexes, periodically distributed in a three dimensional space. A unit cell substrate having air holes in a diamond structure is formed by a stereo lithography method which repeats the step of irradiating light onto a liquid surface of a light-hardening resin such as a photosensitive epoxy resin in each layer in a cross-sectional pattern to be formed. Then, a conductive film made of, for example, Cu is formed by an electroless plating method on the surface of the unit cell substrate. Thus, a three dimensional periodic structure comprising two substances having different dielectric constants, i.e., resin and air, periodically distributed in a three dimensional space, and comprising a conductive film formed at an interface between the two substances is obtained.
摘要:
First, an aqueous solution of water soluble compounds or an aqueous solution of water soluble complexes, which is a salt of elements belonging to the 6A, 7A, 1B, 2B, 3B, 4B, 5B, 6B, or 8 group in a periodic table are prepared. The pH of the aqueous solution is adjusted and titanium trichloride is added thereto. The aqueous solution provided with titanium trichloride is stirred at temperature below the boiling point of the solution under atmospheric pressure or under high pressure. Then, by the reducing action of the titanium trichloride, a fine titanium-free powder selected from the group consisting of a metal powder, an alloy powder containing two or more of metals and non-metals, or a compound powder containing two or more of metals and non-metals is obtained.
摘要:
A monolithic ceramic capacitor comprises a dielectric ceramic element assembly, metal electrodes for external connection and conductive metal oxide layers formed between the ceramic element assembly and the metal electrodes for preventing reduction of metal oxide forming the dielectric ceramic material.
摘要:
A method for processing a waste solution used in a chemical plating process and including a heavy metal complex salt, a reducing agent, and a pH adjusting agent. The heavy metal complex salt is decomposed into a heavy metal component and a complexing agent component by applying ultrasonic vibration to the waste solution. The heavy metal component obtained by decomposition is in a powder state. Then the waste solution is filtered, so that the heavy metal component may be separated from the complexing agent component.
摘要:
A three-dimensional component having cavities containing a photocurable resin material and having a structure in which a plurality of cured resin layers composed of the photo-cured resin material are stacked, is manufactured by stereolithography. Inorganic members are inserted into concave portions when the concave portions are formed before covering the cavities, each of the concave portions being at least a portion of the corresponding cavity, and the photocurable resin material remaining. When the three-dimensional component is completed, the photocurable resin material remaining in the cavity is thermally cured, thus being brought into contact with the inorganic members. In this manner, a three-dimensional photonic structure having the plurality of inorganic members precisely disposed at desired periodic positions within the resin matrix is efficiently manufactured.
摘要:
A band-pass filter includes a photonic crystal having a local mode that generates a pass band in a stop band formed by Bragg reflection, a transmission channel that limits electromagnetic waves propagating in the photonic crystal to a mode in which an amplitude direction of an electrical field is a particular direction; and a magnetic field-applying unit for applying to the photonic crystal a DC magnetic field in a direction perpendicular to a propagation direction of the electromagnetic waves. The photonic crystal includes a periodic structure including a low permittivity dielectric member and a plurality of high permittivity dielectric members periodically arranged in the low permittivity dielectric member so that the Bragg reflection occurs in the periodic structure, and a magnetic member disposed in the periodic structure.