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57results about How to "Reduce interface area" patented technology

Solid-state relay

A solid state relay composed of a series connected pair of LDMOSFETs has a minimized output capacitance. Each LDMOSFET is configured to have a silicon layer of a first conductive type, a drain region of the first conductive type diffused in the top surface of the silicon layer, a well region of a second conductive type diffused in the silicon layer in a laterally spaced relation from the drain region, and a source region of the first conductive type diffused within the well region to define a channel extending between the source region and a confronting edge of the well region along the top surface of the silicon layer. Each LDMOSFET is of an SOI (Silicon-On-Insulator) structure composed of a silicon substrate placed on a supporting plate, a buried oxide layer on the silicon substrate, and the silicon layer on the buried oxide layer. The well region is diffused over the full depth of the silicon layer to have its bottom in contact with the buried oxide layer, so that the well region forms with the silicon layer a P-N interface only at a small area adjacent the channel. Because of this reduced P-N interface and also because of the buried oxide layer exhibiting a much lower inductive capacitance than the silicon layer, it is possible to greatly reduce a drain-source capacitance for minimizing the output capacitance of the relay in the non-conductive condition.
Owner:CORNELL RES FOUNDATION INC

Electro-wetting on dielectric for pin-style fluid delivery

A method of delivering fluid can include using electro-wetting effects to pick-up, transport, and / or deliver discrete volumes of fluid. Voltage can be applied across a fluid contact area having a conductive substrate and a dielectric material with an outer surface. The outer surface can have a native interfacial surface tension state and a voltage induced second state having a reduction in interfacial surface tension. A fluid can be contacted such that a volume of fluid adheres to the outer surface of the fluid contact area when the voltage is applied. Subsequently, the voltage can be adjusted such that at least a portion of the volume of fluid is delivered to a receiving location.
Owner:HEWLETT PACKARD DEV CO LP

Three phase sulfur separation system with interface control

ActiveUS20110142747A1Quality improvementPrecise interface level controlLevel controlCrystallization separationGas phaseSulfur
A liquid separator system having a gas phase zone, an aqueous phase zone and a denser liquid zone is used to separate mixtures of fluids. The separator can be used for separating molten sulfur from liquid redox solution or reslurry water. The system includes a vessel with a top part and a bottom part. The vessel has a larger diameter at the top part than at the bottom part. The system also includes an inlet for introducing a redox solution or reslurry water and molten sulfur, which is denser than redox solution or reslurry water, into the vessel. An outlet near the bottom part of the vessel allows a flow of the molten sulfur from the vessel. An interface control structure senses an interface level between the redox solution or reslurry water and the molten sulfur, and the interface control structure controls the flow of molten sulfur from the outlet. The interface control structure is adjusted to optimally alter the vertical height of the interface level within the vessel so that the residence time of the molten sulfur in the vessel does not decrease as the sulfur production throughput decreases, and so that the interface area of the molten sulfur and the redox solution is reduced as the sulfur throughput decreases. A pressure controller monitors the pressure in the vessel and adds or removes gas from a gas phase zone in the vessel to maintain a predetermined pressure regardless of the vertical height of the interface.
Owner:MERICHEM CO

Molded rare-earth magnet and process for producing same

Disclosed is a molded rare-earth magnet (1) which comprises rare-earth magnet particles (2) and an insulating phase (3) present among the rare-earth magnet particles (2). The rare-earth magnet particles (2) have, dispersed therein, segregation regions (4) in which at least one element selected from a group consisting of Dy, Tb, Pr, and Ho has segregated. As a result, the molded magnet can retain high magnetic properties (coercive force) and have excellent heat resistance required for use in motors, etc.
Owner:NISSAN MOTOR CO LTD

Solid-state relay

A solid state relay composed of a series connected pair of LDMOSFETs has a minimized output capacitance. Each LDMOSFET is configured to have a silicon layer of a first conductive type, a drain region of the first conductive type diffused in the top surface of the silicon layer, a well region of a second conductive type diffused in the silicon layer in a laterally spaced relation from the drain region, and a source region of the first conductive type diffused within the well region to define a channel extending between the source region and a confronting edge of the well region along the top surface of the silicon layer. Each LDMOSFET is of an SOI (Silicon-On-Insulator) structure composed of a silicon substrate placed on a supporting plate, a buried oxide layer on the silicon substrate, and the silicon layer on the buried oxide layer. The well region is diffused over the full depth of the silicon layer to have its bottom in contact with the buried oxide layer, so that the well region forms with the silicon layer a P-N interface only at a small area adjacent the channel. Because of this reduced P-N interface and also because of the buried oxide layer exhibiting a much lower inductive capacitance than the silicon layer, it is possible to greatly reduce a drain-source capacitance for minimizing the output capacitance of the relay in the non-conductive condition.
Owner:MATSUSHITA ELECTRIC WORKS LTD

Preparation method of starch microspheres with small particle sizes

The invention discloses a preparation method of starch microspheres with small particle sizes. The preparation method comprises steps as follows: (1) preparation of a starch solution; (2) preparation of a polyvinylpyrrolidone solution; (3) forming of an aqueous two-phase emulsion through high-speed shearing and emulsification performed after the polyvinylpyrrolidone solution is added to the starch solution; (4) balling through retrogradation and solidification, separation and washing: the emulsified aqueous two-phase emulsion is put in an environment at the temperature of 4-30 DEG C to be retrograded for 24 h, then taken out and subjected to centrifugal separation for 10-15 min, a substrate in a centrifuge tube is washed and then dried for 12 h, and the starch microspheres with the average particle sizes smaller than 10 mu m are obtained. The prepared starch microspheres have the characteristic of being small in particle size, the phenomenon that starch microspheres aggregate due to the fact that the interfacial area between the two phases of the aqueous two-phase emulsion is substantially increased, the interfacial free energy is substantially increased and liquid drops aggregate to reduce the interfacial free energy in the preparation process of the starch microspheres can be avoided, and the preparation method has great application value.
Owner:GUANGXI ACAD OF SCI

Three phase sulfur separation system with interface control

A liquid separator system having a gas phase zone, an aqueous phase zone and a denser liquid zone is used to separate mixtures of fluids. The separator can be used for separating molten sulfur from liquid redox solution or reslurry water. The system includes a vessel with a top part and a bottom part. The vessel has a larger diameter at the top part than at the bottom part. The system also includes an inlet for introducing a redox solution or reslurry water and molten sulfur, which is denser than redox solution or reslurry water, into the vessel. An outlet near the bottom part of the vessel allows a flow of the molten sulfur from the vessel. An interface control structure senses an interface level between the redox solution or reslurry water and the molten sulfur, and the interface control structure controls the flow of molten sulfur from the outlet. The interface control structure is adjusted to optimally alter the vertical height of the interface level within the vessel so that the residence time of the molten sulfur in the vessel does not decrease as the sulfur production throughput decreases, and so that the interface area of the molten sulfur and the redox solution is reduced as the sulfur throughput decreases. A pressure controller monitors the pressure in the vessel and adds or removes gas from a gas phase zone in the vessel to maintain a predetermined pressure regardless of the vertical height of the interface.
Owner:MERICHEM CO

Double-plenum inlet manifold and vehicle incorporating such a manifold

This invention relates to a double-plenum or double-chamber inlet manifold or splitter, made up of a structural unit comprising two distinct coupled plenums with a common wall, an inlet opening for each of the two plenums and several pipes through each of the said plenums, the said superimposed plenums having substantially flattened general structures and forming, with their respectively connected inlet openings and pipes, two independent circulation circuits running from the entrance at the inlet openings to the outlet at the external openings of the pipes, the said external or outlet openings of the pipes being grouped in pairs, with each pair having an opening of each of the two types of pipes; the manifold comprises two one-piece parts assembled together, in a gas-tight manner, at the continuous assembly areas, a first part incorporating at least the two inlet openings and first portions of the walls of the two plenums, contiguous to the said openings and the second part incorporating the pipes and second portions of the walls of the two plenums, contiguous to the said pipes and complementary to the above-mentioned first portions.
Owner:SYST MOTEURS

Automatic rice transplanting device

The invention provides an automatic rice transplanting device. The automatic rice transplanting device comprises a bearing frame body (92), a rice transplanting executing mechanism (93) which is installed at the lower end of the bearing frame body (92) and a fixed connecting frame which is connected with a driving vehicle, wherein the fixed connecting frame comprises connecting parts (61) which are arranged in an up-and-down mode and a sliding strode part (81) which is fixedly arranged between the up and down connecting parts (61), the sliding strode part (81) is internally provided with an inner chamber (811) and a middle groove seam (810) which is communicated with the inner chamber (811), and the inner chamber (811) is provided with a threaded sliding block (95) with a screw hole formed in the middle in a sliding mode.
Owner:绥棱县科田机械制造有限公司
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