摘要:
A semiconductor dynamic sensor has a displacement portion, which is composed of a movable electrode and first and second fixed electrodes, formed in a semiconductor substrate. The movable electrode is displaced in response to applied acceleration, so that capacitance between the movable electrode and each of the first and second fixed electrodes changes. Therefore, the applied acceleration can be detected based on the capacitance change. A plurality of rectangular-shaped suction portions is provided at four corners on the surface of the semiconductor substrate. By sucking the suction portions using a collet check, the semiconductor dynamic sensor such can be transported without damaging the displacement portion.
摘要:
A method for treatment of uranium-containing wastes, which realizes the decontamination of steel-based metallic wastes such as carbon steel or stainless steel containing nuclear fuel materials such as uranium or plutonium, produced from nuclear facilities, simultaneously with the reduction of volume thereof. Spent nuclear fuel (uranium) 6, which is mixed with hull 5 as stainless-based metal, is separated from the stainless-based metal, through the separation of uranium that constitutes the spent nuclear fuel 6 as oxides by melting the stainless-based metal wastes.
摘要:
A physical quantity (e.g., acceleration) sensing unit is provided in this unit, a capacitive sensor has first and second fixed electrodes and a physical-quantity-sensitive movable electrode disposed between the first and second fixed electrodes. An adjusting circuit first adjusts a first bias voltage applied between the first fixed electrode and the movable electrode and a second voltage applied between the movable electrode and the second fixed electrode so that the movable electrode is brought into contact with either the first or second fixed electrode. The adjusting circuit then adjusts the first and second bias voltages to return the movable electrode to its original position. A detecting circuit detects an output on a capacitance relationship among the first and second fixed electrodes and the movable electrode. The output is subjected to determination of whether or not the output is out of order, when tested.
摘要:
A semiconductor sensor chip is provided with a weight portion supported in a frame via beams whereby acceleration up to substantially ±1 G can be detected by utilizing piezoresistance effect of resistor elements formed on the beams. The semiconductor sensor chip is supported by a seat having a thermal expansion coefficient equivalent to that of the semiconductor sensor chip via the frame. The frame and the seat are adhered to each other by a flexible adhesive agent mixed with a plurality of resin beads functioning as spacers and under an adhesion state, air damping of the weight portion is carried out by setting a dimension of an air gap between the weight portion and the seat to a range of 7 through 15 &mgr;m.
摘要:
A synthetic aperture radar system fluctuation compensating apparatus includes a synthetic aperture radar mounted on a flying unit, a data acquiring unit, a position measuring unit and a position determining unit. The data acquiring unit receives a reception data by the synthetic aperture radar. The position measuring unit measures a position of the flying unit to generate a position data. The position determining unit determines a correct position of the flying unit based on the reception data and the position data to generate a compensated position data.
摘要:
In order to improve the throughput of a scanning type of exposure system while maintaining the positioning precision, the positioning error range &egr;S at the scan start position is set to be less strict than the positioning error range &egr;E at the start of exposure. This reduces the settling time TS before acceleration from the scan start position toward the exposure start position can commence. Thus, upon finishing exposure of a current shot area, the substrate stage moves toward a target position, which is to be the scan start position. The velocity of the substrate stage reaches substantially zero at the scan start position. The substrate stage 17 slightly oscillates at the scan start position during positioning. When the differences between a target position and a detected position remain within an acceptable positioning error range &egr;S (or tolerance) at the scan start position for a predetermined number of sampling values, acceleration toward the exposure area commences. The large positioning error that results from loosening of the positioning precision (or tolerance) is corrected between the scan start time and the exposure start time.
摘要:
A semiconductor sensor has gauge resistors. The gauge resistors connect with aluminum electrodes through contact holes, and form a bridge circuit. The gauge resistors are formed on each chip area of a semiconductor substrate before dicing the chip areas. Then, the resistances of the gauge resistors or the output of the bridge circuit are measured. Contact positions of the gauge resistors or the size and/or shape of the contact holes are adjusted based on the result of the measurement in order to adjust the offset voltage of the bridge circuit formed on each chip area.
摘要:
A method of manufacturing a magnetoresistance element that can accurately sort out truely defective products from apparently defective products due to the manufacturing processes. Manufacturing processes for MR elements includes a MR element formation process, a magnetic field application process and an electric inspection process. In the magnetic field process, the magnetic field application is limited to a range within 75.degree. to the longitudinal direction of a MR element pattern. By performing the magnetic field application process before the electric inspection process, the anisotropic magnetic field due to a shape magnetic anisotropy of the MR element can be aligned almost in a fixed direction, defective products due to the manufacturing processes can exactly be sorted out from the apparently defective products in the electric inspection process, so that the yield rate can be improved.
摘要:
A key top comprises a key top base comprising a side portion and a top portion having a specified color, a colored portion provided at a part of the top portion and having a color different from the specified color of the top portion, and, a protective layer composed of a transparent material having an abrasion resistance and covering at least the colored portion.