摘要:
The purpose of the present invention is to provide: a polishing pad which has improved dressing properties, while maintaining the hardness; or a polishing pad which does not easily make a scratch on the surface of an object to be polished, while having improved dressing properties. A polishing pad of the present invention is characterized by having a polishing layer that is formed of a polyurethane resin foam or an unfoamed polyurethane resin, and is also characterized in that the polyurethane resin foam or the unfoamed polyurethane resin contains, as starting material components, (A) an isocyanate component, (B) a polyol component and (C) an aromatic compound that has one hydroxyl group and/or an aromatic compound that has one amino group.
摘要:
The purpose of the present invention is to provide: a polishing pad which has improved dressing properties, while maintaining the hardness; or a polishing pad which does not easily make a scratch on the surface of an object to be polished, while having improved dressing properties. A polishing pad of the present invention is characterized by having a polishing layer that is formed of a polyurethane resin foam or an unfoamed polyurethane resin, and is also characterized in that the polyurethane resin foam or the unfoamed polyurethane resin contains, as starting material components, (A) an isocyanate component, (B) a polyol component and (C) an aromatic compound that has one hydroxyl group and/or an aromatic compound that has one amino group.
摘要:
A solar-thermal conversion member includes a β-FeSi2 phase material. The solar-thermal conversion member exhibits a high absorptance for visible light at wavelengths of several hundred nm and a low absorptance for infrared light at wavelengths of several thousand nm and, as a consequence, efficiently absorbs visible light at wavelengths of several hundred nm and converts the same into heat and exhibits little thermal radiation due to thermal emission at temperatures of several hundred ° C. The solar-thermal conversion member may therefore efficiently absorb sunlight, provide heat, and prevent thermal radiation due to thermal emission.
摘要:
An input device includes a substrate having a first main surface and a second main surface located opposite to the first main surface; a protective member having an opposed surface opposite to the first main surface; a bonding member configured to bond the first main surface and the opposed surface to each other; a first coloring member disposed between the first main surface and the opposed surface, the first coloring member being in contact with the bonding member; and a second coloring member disposed on the second main surface and having a color different from a color of the first coloring member.
摘要:
A polishing pad having a polishing layer comprising a thermoset polyurethane foam, wherein about the thermoset polyurethane foam, the Asker C hardness value thereof is 82 or less as a 60-second value, the hardness value being a value after the foam is immersed in water for 24 hours, and further the value of the tensile storage modulus E′ (30° C.) thereof at a frequency of 1.6 Hz satisfies the following expression (1): Y
摘要:
A surface-mount type antenna includes a rectangular-parallelepiped base body made of a dielectric or magnetic material, having a first surface to be placed on a target substrate, second to fifth surfaces that are continuous with the first surface, and a sixth surface located in parallel with the first surface; a ground electrode formed on at least one of the second to fifth surfaces; two radiating electrodes that are continuous with the ground electrode and extend over two or more adjacent surfaces of the second to sixth surfaces; and two feeding electrodes formed on at least one of the second to fifth surfaces so as to be spaced apart circumferentially of the continuum of the second to fifth surfaces to provide the ground electrode in between. The feeding electrode is capacitance-coupled to the radiating electrode for effecting feeding.
摘要:
An antenna is constituted in which a variable capacitance capacitor portion Ct is connected between an antenna element and a ground. In the variable capacitance capacitor, a plurality of variable capacitance elements using a thin film dielectric layer whose dielectric constant is changed by a voltage applied are connected in parallel with regard to direct current component and in series with regard to high frequency component between an antenna-element-side terminal and a ground-side terminal. The capacitance change ratio of the variable capacitance capacitor that depends on the bias signal can be utilized to the maximum so as to perform impedance matching so that the electrical length of the antenna element is changed, and thus, the operating frequency can be changed. In addition, the antenna having small waveform distortion and intermodulation distortion, high power handling capability and low loss at high frequencies can be realized.
摘要:
An antenna is structured in a manner that a rectangular radiation electrode, a ground electrode opposed in parallel to a long side and a short side adjacent to each other of the radiation electrode, respectively, and a feeder electrode connected to the long side of the radiation electrode are formed on a substrate. A portion opposed to the long side of the ground electrode has a length not more than the long side and a width equal to or less than a length of the short side, and a portion opposed to the short side of the ground electrode has a length more than the short side and a width equal to or more than a length of the long side.
摘要:
The surface-mount type antenna includes: a substantially rectangular parallelepiped base body; feeding and ground terminals formed on one side surface of the base body; and a radiating electrode, to one end of which is connected the ground terminal, disposed such that its other end extends from one side surface, through another end side part of one principal surface of the base body, to the one end side part thereof, then turns to the other end side part; and is eventually formed into an open end located near the other end side part. The feeding terminal is disposed near the radiating electrode. The antenna apparatus is constructed by mounting the surface-mount type antenna on the mounting substrate having the feeding electrode, the ground electrode, and the ground conductor layer.
摘要:
A NRD guide includes a pair of parallel plate conductors opposed to each other at a spacing equal to or shorter than half the wavelength of a high-frequency signal to be transmitted and having opposing inner surfaces whose arithmetic average roughness Ra satisfies 0.1 μm≦Ra≦50 μm, and a dielectric strip arranged between the pair of parallel plate conductors and held in contact with the respective inner surfaces of the parallel plate conductors. The dielectric strip is strongly secured to the inner surfaces to exhibit an excellent durability. The transmission loss of the high-frequency signal can be effectively suppressed.