摘要:
A micro fluidic device includes a separation membrane that has an upper surface and a lower surface opposing to each other and a side surface; a plurality of base materials that sandwiches the separation membrane; a first channel and a second channel that are partitioned from each other by the separation membrane; a first feed port that is connected to the first channel; and a first discharge port that is connected to the second channel, wherein the first channel comes into contact with at least a part of the upper surface and the lower surface of the separation membrane, the second channel comes into contact with at least a part of the side surface of the separation membrane, and a fluid is movable in a surface direction within the separation membrane.
摘要:
A process for polishing a glass substrate, which enables to polish a glass substrate having a large waviness formed by mechanical polishing, to have a surface excellent in flatness, is provided. A process for polishing a glass substrate, comprising a step of measuring the surface profile of a mechanically polished glass substrate to identify the width of waviness present in the glass substrate, and a step of applying dry etching using a beam having a beam size in FWHM (full width of half maximum) value of at most the above size of waviness, to polish the surface of the glass substrate.
摘要:
An amplifying device comprising a first terminal to which an alternating signal is inputted; a second terminal connected via an external first resistor to a power supply line; a third terminal to be grounded; a second resistor provided on a signal line in between the second terminal and the third terminal; a differential amplifier, the alternating signal of which being inputted through the first terminal to one input terminal and an output according to the alternating signal being fed back to the other input terminal via a signal line in between the second terminal and the second resistor, and between the one input terminal and the other input terminal, a positive offset voltage higher than a maximum level of the alternating signal being produced in advance; and a third resistor provided between a signal line joining the first terminal and the one input terminal, and a signal line leading to the third terminal. A voltage waveform of the alternating signal that has been amplified on the basis of the resistances of the first and second resistors is produced at the second terminal.
摘要:
A photomask is manufactured by a method including providing a substrate having a surface on which a predetermined pattern is to be formed, positioning the substrate in an exposure tool so as to obtain an amount of deformation of the surface due to an external force imposed on the substrate, calculating a target profile of the surface, based on the amount of deformation and a target flatness of the surface, and processing the surface of the substrate so as to make the surface substantially flat when the substrate is positioned in the exposure tool.
摘要:
Blackened layers 23A and 23B are formed by depositing Cu—Co alloy particles on the surfaces of a metal layer 21. The metal layer 21 coated with the blackened layers 23A and 23B of the Cu—Co alloy particles is subjected to a chromating process to form density-intensifying layers 25A and 25B on the blackened layers 23A and 23B. A base 11 is laminated to the density-intensifying layer 25A or 25B. A conductive structure 109 consisting of the meal layer 21, the blackened layers 23A and 23B, and the density-intensifying layers 25A and 25B is processed by a photolithographic process to complete an electromagnetic shielding sheet 1 having a mesh conductive structure.
摘要:
An integrated semiconductor device is provided that has pads with less input signal attenuation. When J-FET (2) is driven by an input signal, the current passing through it varies. The parasitic capacitance (4) is charged or discharged by the input/output signal of the buffer circuit (6) following the varying current. Thus, since the voltage across the parasitic capacitance (3) varies in phase and at the same level, the parasitic capacitance (3) can be ignored. This effect allows attenuation of an input signal due to the parasitic capacitance (3) to be prevented.
摘要:
The present invention relates to a polishing method and apparatus for polishing a workpiece such as a semiconductor wafer to a flat mirror finish. A polishing liquid is supplied onto a polishing cloth attached on a turntable, and a semiconductor wafer to be polished is held by a top ring. The turntable and the top ring are rotated, respectively. A surface, to be polished, of the semiconductor wafer held by the top ring is pressed against the polishing cloth on the turntable to polish the semiconductor wafer. When a polished semiconductor wafer held by the top ring is to be removed from the polishing cloth on the turntable, a relative speed of the turntable and the top ring is increased as compared with a relative speed of the turntable and the top ring at a period of polishing.
摘要:
The present invention provides a dielectric waveguide filter comprising a plurality of dielectric waveguide resonators in the form of rectangular parallelepiped-shaped blocks aligned as a single main body having opposite ends defined by respective the end blocks located thereat, and a pair of input and output electrodes provided in the end blocks, respectively. Each of the end blocks is formed with a protruding portion including a dielectric substance extended from that therein. A conductive strip line extending from the bottom surface of corresponding one of the end blocks to the edge region of the bottom surface of corresponding one of the protruding portions. The bottom surfaces have a region where the dielectric substance in contact with the both sides of the conductive strip line is exposed to outside. The conductive strip lines are coupled with micro-strip lines or co-planer lines on a printed circuit board having a given length to obtain an adequate matching between input and output signals.
摘要:
In the vibration isolating apparatus of the present invention, a controller provides drive current to an electromagnet when shaking vibration is being generated. This causes an intermediate plate to be attracted to the electromagnet thereby preventing elastic deformation of a first elastic piece caused by load transmitted from a top plate. Therefore, the static spring constant of an elastic body can be made larger than when the electromagnet is not being operated. Furthermore, the controller shuts off the supply of drive current to the electromagnet when idling vibration is being generated. This causes the intermediate plate to move away from the electromagnet thereby enabling elastic deformation of the first elastic piece cause by the load transmitted from the top plate. Therefore, the static spring constant of the elastic body can be made smaller than when the electromagnet is operated. The result of this is that, according to the vibration isolating apparatus of the present invention, the static spring constant of an elastic body to counter vertical load and the static spring constant of an elastic body to counter shear load can both be adjusted to optimum values in accordance with the characteristics of the input vibration.
摘要:
A wiper device for a vehicle disclosed is provided with a wiper motor, a wiper pivot connected to the wiper motor, and a wiper frame in which the wiper pivot is arranged. In this case, the wiper pivot can rotate around the pivot axis thereof by using a drive force from the wiper motor, and the wiper pivot extends so as to project toward an outer side of the vehicle body. Further, the wiper frame has a bracket portion fixing the wiper frame to the vehicle body. Then, in the structure mentioned above, it is constructed in such a manner that the bracket portion of the wiper frame is released from the vehicle body so as to move the wiper pivot to an inner side of the vehicle body when a load equal to or more than a predetermined value acts on the wiper pivot.