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171 results about "Liquid dielectric" patented technology
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A liquid dielectric is a dielectric material in liquid state. Its main purpose is to prevent or rapidly quench electric discharges. Dielectric liquids are used as electrical insulators in high voltage applications, e.g. transformers, capacitors, high voltage cables, and switchgear (namely high voltage switchgear). Its function is to provide electrical insulation, suppress corona and arcing, and to serve as a coolant.
Apparatus and method with forced coolant vapor movement for facilitating two-phase cooling of an electronic device
ActiveUS8194406B2Improve cooling effectEnhanced condensate formationDomestic cooling apparatusIndirect heat exchangersElectricityCoolant flow
Owner:LENOVO GLOBAL TECH INT LTD
Method and system using liquid dielectric for electrostatic power generation
InactiveUS20060077762A1Not easy to wearImprove uniformityMechanical recordingRecord information storageEngineeringElectret
A system and method for generating power. The system has a first electrode member comprising a first region and a second electrode member comprising a second region. Preferably, the second electrode member is coupled to the first electrode member. An electret is coupled between the first electrode member and the second electrode member. The system has a spatial region provided between the first region of the first electrode member and the second region of the second electrode member. A volume of fluid (e.g., liquid, liquid and solids, gas and liquid, solids and gases) is provided between the first region and the second region and is adapted to move between the first region and the second region to cause a change in an electric field characteristic within a portion of the spatial region by the movement of at least a portion of the fluid within the portion of the spatial region to generate a change in voltage potential between the first electrode and the second electrode.
Owner:CALIFORNIA INST OF TECH
Copper pillar full metal via electrical circuit structure
InactiveUS20140225255A1Attractive cost of manufactureHigh densitySemiconductor/solid-state device detailsPrinted circuit aspectsEngineeringCopper
An electrical interconnect including a first circuitry layer with a first surface and a second surface. A first liquid dielectric layer is imaged directly on the first surface of the first circuitry layer to form a first dielectric layer with a plurality of first recesses. Conductive plating substantially fills a plurality of the first recesses to create a plurality of first solid copper conductive pillars electrically coupled to, and extending generally perpendicular to, the first circuitry layer. A second liquid dielectric layer is imaged directly on the first dielectric layer to form a second dielectric layer with a plurality of second recesses. Conductive plating substantially fills a plurality of the second recesses to form a plurality of second solid copper conductive pillars electrically coupled to, and extending parallel with, the first conductive pillars. An IC device is electrically coupled to a plurality of the second conductive pillars.
Owner:HSIO TECH
Liquid-gap electrostatic hydraulic micro actuators
InactiveUS20090115285A1Reduce voltageHigh gas conductancePiezoelectric/electrostrictive device manufacture/assemblyOperating means/releasing devices for valvesParallel plateMicro actuator
A liquid-gap electrostatic hydraulic micro actuator is provided that produces higher displacement (in and out of plane) and larger force than typical electrostatic actuators by utilizing a non-conducting liquid as its dielectric material. This new class of actuators utilizes the liquid dielectric for hydraulic amplification and force transfer. The liquid electrostatic actuator consists of two chambers each forming a parallel-plate capacitor, filled with a non-conducting incompressible liquid. One chamber is compressed by pulling down a flexible membrane using electrostatic actuation, thus forcing the liquid under it to transfer into the other chamber. Such movement causes the other chamber's membrane to expand out of plane.
Owner:RGT UNIV OF MICHIGAN
Protection system for protecting a poly-phase distribution transformer insulated in a liquid dielectric, the system including at least one phase disconnector switch
InactiveUS6839207B2Prevent pressureEmergency protective circuit arrangementsProtective switchesElectricityCurrent limiting
The distribution transformer is installed in a station having N phases, at least N-1 phases being equipped on the high-voltage side of the transformer with respective current-limiting fuses capable of blowing in the event of a dead short circuit between the phases. The protection system includes: at least one fault detector for detecting faults on the basis of at least one of the following indicators: pressure in the tank, level of the dielectric, or temperature of the transformer; a short-circuiter acting on all the phases situated upstream from the high-voltage windings, said short-circuiter being capable of being triggered by said fault detector to establish a dead short circuit between the phases; and on at least N-1 phases, a detector for detecting an abnormal current upstream from the transformer, said detector being associated with a controller for controlling said short-circuiter. In the system, at least the phase that is not equipped with a limiting fuse is equipped with a disconnector switch which is normally closed in the absence of any fault, said disconnector switch being disposed on the high-voltage side of the transformer upstream from the short-circuiter, and opening thereof being triggered by the short-circuiter in the event of a fault, but with a certain delay.
Owner:AREVA T&D
Duplex electrical discharge machining
ActiveUS7214901B1Electrode vibration holdersElectrical-based machining electrodesElectricityElectrical discharge machining
An electrical discharge machine includes first and second coaxial electrodes and corresponding carriages. A liquid dielectric is channeled between the electrodes and a workpiece which are suitably electrically powered for machining a duplex hole in the workpiece.
Owner:GENERAL ELECTRIC CO
High speed circuit assembly with integral terminal and mating bias loading electrical connector assembly
ActiveUS20150136467A1Attractive cost of manufactureHigh densityPrinted circuit aspectsCoupling device detailsEngineeringConductive materials
Owner:HSIO TECH
Apparatus and method with forced coolant vapor movement for facilitating two-phase cooling of an electronic device
ActiveUS20110069453A1Improve cooling effectEnhanced condensate formationDomestic cooling apparatusIndirect heat exchangersElectricityCoolant flow
Apparatus and method are provided for two-phase dielectric cooling of an electronic device. The apparatus includes a coolant flow path, a vapor condenser and one or more vapor fans. The coolant flow path is in fluid communication with the electronic device, where liquid dielectric coolant within the flow path vaporizes upon contacting the electronic device, forming dielectric coolant vapor, and thereby facilitating cooling of the electronic device. The vapor condenser is also in fluid communication with the coolant flow path and facilitates condensate formation from the dielectric coolant vapor. The one or more vapor fans are disposed within the flow path to actively move dielectric coolant vapor into contact with the vapor condenser, and thereby enhance cooling of the electronic device by facilitating coolant condensate formation and thus recirculation of the coolant condensate as liquid dielectric coolant.
Owner:LENOVO GLOBAL TECH INT LTD
Protection system for protecting a poly-phase distribution transformer insulated in a liquid dielectric, the system including at least one phase disconnector switch
InactiveUS20030086218A1Prevent excessive internal pressurePrevent pressureProtective switchesTransformers/inductances detailsElectricityCurrent limiting
The distribution transformer is installed in a station having N phases, at least N-1 phases being equipped on the high-voltage side of the transformer with respective current-limiting fuses capable of blowing in the event of a dead short circuit between the phases. The protection system comprises: at least one fault detector for detecting faults on the basis of at least one of the following indicators: pressure in the tank, level of the dielectric, or temperature of the transformer; a short-circuiter acting on all the phases situated upstream from the high-voltage windings, said short-circuiter being capable of being triggered by said fault detector to establish a dead short circuit between the phases; and on at least N-1 phases, a detector for detecting an abnormal current upstream from the transformer, said detector being associated with control means for controlling said short-circuiter. In the system, at least the phase that is not equipped with a limiting fuse is equipped with a disconnector switch which is normally closed in the absence of any fault, said disconnector switch being disposed on the high-voltage side of the transformer upstream from the short-circuiter, and opening thereof being triggered by the short-circuiter in the event of a fault, but with a certain delay.
Owner:AREVA T&D
Method and system using liquid dielectric for electrostatic power generation
InactiveUS7446450B2Not easy to wearImprove reliabilityMechanical recordingRecord information storageEngineeringElectret
A system and method for generating power. The system has a first electrode member comprising a first region and a second electrode member comprising a second region. Preferably, the second electrode member is coupled to the first electrode member. An electret is coupled between the first electrode member and the second electrode member. The system has a spatial region provided between the first region of the first electrode member and the second region of the second electrode member. A volume of fluid (e.g., liquid, liquid and solids, gas and liquid, solids and gases) is provided between the first region and the second region and is adapted to move between the first region and the second region to cause a change in an electric field characteristic within a portion of the spatial region by the movement of at least a portion of the fluid within the portion of the spatial region to generate a change in voltage potential between the first electrode and the second electrode.
Owner:CALIFORNIA INST OF TECH
Hybrid printed circuit assembly with low density main core and embedded high density circuit regions
ActiveUS20150181710A1Attractive cost of manufactureHighly structured3D rigid printed circuitsPrinted electric component incorporationResistHigh density
A high density region for a low density circuit. At least a first liquid dielectric layer is deposited on the first surface of a first circuitry layer. The dielectric layer is imaged to create plurality of first recesses. Surfaces of the first recesses are plated electro-lessly with a conductive material to form first conductive structures electrically coupled to, and extending generally perpendicular to, the first circuitry layer. A plating resist is applied. A conductive material is electro-plated to the first conductive structure to substantially fill the first recesses, and the plating resist is removed.
Owner:LCP MEDICAL TECH LLC
Composite of vegetable insulating oil and modified nano powder and application and preparation method thereof
InactiveCN101901637AExcellent dielectric propertiesHigh dielectric strengthLiquid organic insulatorsTransformers/inductances coils/windings/connectionsHYDROSOLWet grinding
The invention provides a composite of vegetable insulating oil and modified nano powder and application and preparation method thereof. The composite comprises vegetable insulating oil and nano powder, and the composite is used for preparing insulating oil. The preparation method includes the following steps: surface treatment is carried out on the nano powder; vegetable insulating oil subject to water removal and gas removal is mixed with the nano powder subject to surface treatment; the mixed insulating oil is subject to ultrasonic oscillation; and mixture obtained by oscillation treatment is added into a planet ball mill, and wet grinding is carried out. In the invention, nano powder is added into vegetable insulating oil, nano liquid dielectric medium can be formed, not only the dielectrical property of insulating oil can be improved, but also heat dissipation function of transformer winding coil can be improved; and the nano powder is far smaller than foreign particle in the insulating oil and can form stable sol system with the liquid dielectric medium, and a breakdown bridge can not be formed under the action of external electric field, thus improving the dielectrical strength of insulating oil.
Owner:CHONGQING UNIV
Method and apparatus for nanoscale surface analysis using soft X-rays
InactiveUS20060098781A1Laser detailsMaterial analysis using wave/particle radiationSoft x raySoft X-rays
A nano-scale surface analysis system comprises an electrically powered apparatus for the generation of soft x-ray laser radiation. The apparatus comprises an excitation circuit having at least two or more electrically conducting structures separated by a liquid dielectric for providing a high current excitation pulse, and a capillary structure having a capillary with a length to diameter ration of about 20 to 1000 for enclosing a selected lasing material, wherein the excitation circuit is capable of generating a plasma volume within the capillary structure to produce a population inversion. The generator further comprises a focusing optic for receiving the soft x-ray radiation from the emissions source and focus the soft x-ray radiation onto a target for forming a nanoplasma, the soft x-ray radiation being focused onto an area of the target having a diameter of less than 100 nm.
Owner:JMAR LLC A DELAWARE LLC
Absorption power measuring device
InactiveUS7186377B2Material thermal conductivityMicrobiological testing/measurementElectricityElectrical field strength
In an apparatus for measuring absorbed power including an electromagnetic field probe 1 fixedly mounted within a head simulation phantom 2 which simulates the configuration and the electromagnetic characteristics of a head of a human body, and wherein the strength of an electric field or a magnetic field of a radio wave externally irradiated upon the head simulation phantom 2 is measured by the electromagnetic field probe 1, and the power of the radio wave absorbed by the head is estimated on the basis of measured values, the head simulation phantom 2 comprises a solid dielectric 10′ which simulates the configuration and the electromagnetic characteristics of a head of a human body or a liquid dielectric 10 which simulates the electromagnetic characteristics of a head of a human body and which is filled in an enclosed vessel 10 which simulates the configuration of a head of a human body. The volume of the solid dielectric 10′ or the volume of the enclosed vessel 11 is equal to or less than 5×105 mm3.
Owner:GOOGLE LLC
High sensitivity liquid dielectric constant measuring probe
A high sensitivity liquid dielectric constant measuring probe, comprising a coaxial outer conductor, a coaxial inner conductor and packing filling between the inner conductor and the outer conductor,the coaxial outer conductor is cut thin partly and connected to the tunable outer conductor, the coaxial inner conductor is partly hollow, with the hollow position in in rabbet joint or cup joint with the tunable inner conductor, the length of the inner conductor and the outer conductor is all adjustable, a plurality of slots are arranged on the outer conductors.
Owner:SICHUAN UNIV
Liquid dielectric constant measuring system self-adapting to scale and precision
InactiveCN103675463ASolve the problem of selectivitySolve the accuracy problemResistance/reactance/impedenceCapacitanceMicrocontroller
The invention relates to a liquid dielectric constant measuring system self-adapting to scale and precision. The dielectric constant measuring system comprises a to-be-measured capacitor detector (1), a single-chip microcomputer (2) and an LED display. The single-chip microcomputer controls a switch circuit in the to-be-measured capacitor detector, an estimated value of the to-be-measured capacitor is acquired through a capacitor initial check circuit, a commutating and voltage-stabilizing circuit, and a low precision analog-digital converter in the to-be-measured capacitor detector and a corresponding computational formula, the estimated value is used to control a phase-locked loop to output a sampling lock with appropriate precision, then the state of the switch circuit in the to-be-measured capacitor detector is changed, the charging impulse of the to-be-measured capacitor is acquired through an RC charging and discharging subcircuit and a comparator circuit, the sampling clock is used to sample to acquire the charging time, and calculation is conducted to acquire the precise value of the to-be-measured capacitor, and finally, the dielectric constant of a corresponding liquid is obtained through calculation according to the structure of a measured electrode and the measured capacitance value and is displayed in the LED display.
Owner:PEKING UNIV SHENZHEN GRADUATE SCHOOL
Composite of mineral insulating oil and modified nanoparticle powder as well as application and preparation method thereof
InactiveCN101950601AExcellent dielectric propertiesHigh dielectric strengthLiquid organic insulatorsTransformers/inductances coils/windings/connectionsLiquid mediumCooling effect
The invention provides a composite of mineral insulating oil and modified nanometer powder as well as application and a preparation method thereof. The composite comprises mineral insulating oil and nanometer powder. The preparation method of the nanometer modified insulating oil comprises the following steps: carrying out surface treatment on the nanometer powder; mixing the dehydrated and degassed mineral insulating oil with the nanometer powder performed with surface treatment; carrying out ultrasonic oscillation on mixed insulating oil; and adding the oscillated mixture into a planetary ball mill, and processing by a wet milling process. The invention adds the nanoparticle powder into the mineral insulating oil to form nanometer liquid dielectric, improves the dielectric property of the insulating oil and can strengthen the cooling effect of a transformer winding coil; in addition, the nanometer powder is much smaller than impurity particles in the insulating oil, can form a stable sol system with a liquid medium and does not form a breakdownsmall bridge under the action of the external electric field so as to improve the dielectric strength of the insulating oil.
Owner:CHONGQING UNIV
Micro-quantity liquid dielectric constant test sensor
InactiveCN105629078AHigh sensitivityWill not affect the test signalDielectric property measurementsElectricityPhase difference
The present invention discloses a micro-quantity liquid dielectric constant test sensor. The key points of the technical scheme are that the micro-quantity liquid dielectric constant test sensor is a two-port device and comprises two identical 3dB Wilkinson power dividers and two branches with the phase difference of 180 degrees, one branch is a measurement branch, the other branch is a measurement branch, a tested objected and a reference object are respectively placed on the two branches, and the two ports of the sensor are connected to a vector network analyzer. The micro-quantity liquid dielectric constant test sensor has an obvious advantage in the aspect of testing a micro-quantity liquid dielectric constant, the sensitivity is high, and the weak signal caused by a micro-quantity tested object can be captured.
Owner:HENAN NORMAL UNIV
Dielectric loaded fluids for high voltage switching
InactiveUS20130062314A1Increased formationReduce voltageMaterial nanotechnologyLiquid organic insulatorsElectricityBarium strontium titanate
This disclosure relates to methods and systems to reduce high voltage breakdown jitters in liquid dielectric switches. In particular, dielectric liquids have been produced that contain a suspension of nanoparticles and a surfactant to reduce the breakdown jitter. In one embodiment, the suspended nanoparticles are Barium Strontium Titanate (BST) nanoparticles.
Owner:UNIVERSITY OF MISSOURI
Dissolvent hot liquid state phase-change method for synthesizing superhard micro nano material
InactiveCN1919441AImprove crystal qualityImprove uniformityPolycrystalline material growthNitrogen compoundsMicro nanoHexagonal boron nitride
The invention discloses a solvent hot-liquid phase transforming method to synthesize superhard micro-nanometer material in the chemical and new material domain, which comprises the following steps: dispersing hexagonal boron nitride, graphite mold carbon nitride or graphite powder solid particle in the liquid dielectric organic solvent, proceeding ultrasonic dispersing disposal for suspension liquid, adding fitful addictive to reduce phase-transforming needed temperature and pressure, changing boundary energy condition between solid particle and liquid dielectric, accelerating the solid particle to change to needed material.
Owner:SHANDONG UNIV
Semiconductor device and method for manufacturing the same
InactiveUS20030042611A1Reduce layeringAvoid layeringSemiconductor/solid-state device detailsSolid-state devicesDevice materialDielectric layer
A semiconductor device 100 includes wiring layers 12 disposed in a specified pattern on a base 10, and an interlayer dielectric layer 20 that covers the wiring layers 12. The interlayer dielectric layer 20 includes a stress relieving dielectric layer 22 disposed in a specified pattern on the base 10, and a planarization dielectric layer 26 that covers the wiring layers 12 and the stress relieving dielectric layers 22, and is formed from a liquid dielectric member. The interlayer dielectric layer 20 may further include a base dielectric layer 24 and a cap dielectric layer 28.
Owner:SEIKO EPSON CORP
Non-contact direct-current induction electrospray ionization device and method
ActiveCN103972019AEasy to operateLess sample usagePreparing sample for investigationIon sources/gunsIonizationESI mass spectrometry
The invention discloses a non-contact direct-current induction electrospray ionization device and method. The device comprises an electrode, a high-voltage direct-current power supply and a spray head of a nanoliter electric sprayer. The spray head of the nanoliter electric sprayer and the axis of the long and straight wire electrode are in the same straight line. The spray head is located between the electrode and a mass spectrum sample inlet. Electric field lines generated by the tip of the electrode under the excitation of a high voltage penetrate through a conical liquid dialectic before being gathered, so that the intensity of an electric field at the tip of the spray head is greatly enhanced, and liquid to be measured is subjected to electrospray ionization. By means of the non-contact direct-current induction electrospray ionization device and method, the problem that an existing nanoliter electric sprayer can not achieve direct ionization of several samples at the nanoliter grade is solved; meanwhile, the non-contact direct-current induction electrospray ionization device and method can be used for array analysis of the nanoliter electric sprayer. The device is simple in structure, convenient to manufacture and capable of being obtained just by conducting a simple mechanical improvement on the basis of an ion source of a traditional nanoliter electric sprayer; the device can be coupled with an existing commercial mass spectrum instrument, so that the practicability is high; moreover, a lot of problems existing in traditional nanoliter electric sprayers are solved, and the device has wide application prospect and high economic value.
Owner:TSINGHUA UNIV
Quick measuring device and quick measuring method for space electric fields of liquid dielectric medium
ActiveCN104635129AQuick measurementHigh recognition of light and darkTesting dielectric strengthMeasurement deviceMach–Zehnder interferometer
The invention discloses a quick measuring device and a quick measuring method for space electric fields of a liquid dielectric medium, and belongs to the technical field of high voltage and insulation measurement. The method is a quick measuring technology for space transient electric fields of a liquid dielectric medium based on an electro-optic Kerr effect and a Mach-Zehnder interferometer. The quick measuring device consists of a He-Ne laser device, a beam expander, a polarizer, a quarter-wave plate, a Kerr box, a transient voltage generator, a polarization splitting prism, a depolarization splitting prism, a total reflective mirror, a half-wave plate, a CCD (charge coupled device) image sensor. The quick measuring method comprises the following steps: firstly, regulating a light path, and directly measuring interference fringes through the CCD image sensor, visually reflecting externally applied electric fields without being limited by back-end detecting equipment, thereby realizing quick measurement for transient electric fields and making up defects of an Kerr effect alternating-current modulating method in the transient electric field measuring filed.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Hybrid printed circuit assembly with low density main core and embedded high density circuit regions
ActiveUS20170303401A1Attractive cost of manufactureHighly structuredSemiconductor/solid-state device detailsSolid-state devicesResistElectricity
A high density region for a low density circuit. At least a first liquid dielectric layer is deposited on the first surface of a first circuitry layer. The dielectric layer is imaged to create plurality of first recesses. Surfaces of the first recesses are plated electro-lessly with a conductive material to form first conductive structures electrically coupled to, and extending generally perpendicular to, the first circuitry layer. A plating resist is applied. A conductive material is electro-plated to the first conductive structure to substantially fill the first recesses, and the plating resist is removed.
Owner:LCP MEDICAL TECH LLC
Intelligent detecting and controlling system for chemical dangerous articles in highway bridge runoff
InactiveCN104863049ASolve the problem of uncontrollable leakageAvoid threatsMeasurement devicesBridge structural detailsElectricityEcological environment
The invention discloses an intelligent detecting and controlling system for chemical dangerous articles in highway bridge runoff. The intelligent detecting and controlling system comprises an intelligent detecting and controlling unit communicated with a bridge body water draining pipe outlet, wherein the intelligent detecting and controlling unit comprises a closed detecting water pond; a water inlet of the a detecting water pond is communicated with the bridge body water draining pipe outlet, a liquid trigger controlling switch is arranged at the water inlet of the detecting water pond, and a signal output interface of the liquid trigger controlling switch is connected with an industrial control computer signal input interface; a liquid dielectric constant detecting sensor and a liquid electrical conductivity detecting sensor are arranged in the detecting water pond, and a rain and snow detecting sensor are arranged on the outer side of the detecting water pond; a water outlet of the detecting water pond is communicated with a rainwater precipitating and discharging water pond and an accident leakage liquid collecting pond through pipelines and a drainage electronic control valve of which the opening and the closing are controlled by the industrial control computer separately. The intelligent detecting and controlling system has the advantages that the leakage of the chemical dangerous articles on a highway bridge is detected and controlled in an intelligent manner, so that damage to human safety and ecological environment safety caused by the leakage of the chemical dangerous articles on the highway bridge is effectively avoided.
Owner:郝玉萍
Drawer-level immersion-cooling with hinged, liquid-cooled heat sink
ActiveUS20170127576A1Many componentOvercomes shortcomingModifications by conduction heat transferEngineeringElectronic component
Cooling apparatuses and methods of fabrication are provided which facilitate immersion-cooling of an electronic component(s). The cooling apparatus includes a drawer-level enclosure sized to reside within an electronics rack. The drawer-level enclosure includes a compartment which accommodates one or more electronic components to be cooled. A dielectric fluid is disposed within the compartment. The dielectric fluid includes a liquid dielectric which at least partially immerses the electronic component(s) within the compartment(s). A hinged, liquid-cooled heat sink is also disposed within the compartment of the enclosure. The heat sink operatively facilitates cooling the one or more electronic components via the dielectric fluid within the compartment, and is rotatable between an operational position overlying the electronic component(s), and a service position which allows access to the electronic component(s).
Owner:IBM CORP
Solid-liquid universal type thermal stimulus current measuring device
ActiveCN105806892ASolve a lot of volatileResolve disturbanceMaterial analysis by electric/magnetic meansMaterial thermal analysisElectricityNitrogen
Owner:TSINGHUA UNIV +3
Method and device for detecting metal ions by adopting liquid dielectric barrier discharge (DBD) emission spectrum
InactiveCN102445445AReduce corrosionSimple structureAnalysis by electrical excitationIon contentDielectric slab
The invention relates to a method and device for detecting metal ions by adopting a liquid dielectric barrier discharge (DBD) emission spectrum. In the device, a metal wire or stick and a metal flat plate are taken as two electrodes respectively; a dielectric slab is inserted into the space between the two electrodes, and is covered on the surface of the metal flat plate electrode; the dielectricslab and the metal flat plate are arranged on an adjustable-position three-dimensional platform; and a lens is arranged between a discharge region and a spectrometer, and is used for introducing spectrum lines emitted by the discharge region into the spectrometer. Discharge is generated between the metal wire or stick and a sample solution, so that metal ions dissolved into the solution enter plasmas and are excited to generate an emission spectrum. In the method, a complex feeding system is eliminated, the advantages of liquid discharge and DBD are combined, and only a small amount of samplesolution is needed for determining. The device has the advantages of simple structure, small size, convenience for installing and low cost. The method is easy to implement, and can be used for realizing real-time online detection of the metal ion content of a water body and a biological sample under the atmospheric pressure.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Method of forming a substantially closed void
ActiveUS7351669B2Reduce frictionSemiconductor/solid-state device manufacturingMechanical engineeringLiquid dielectric
To form a substantially closed void between two structures on a substrate, a flowable liquid dielectric material is deposited to fill partially the space between the structures, and a surface is placed to bridge and substantially close the space between the structures. The substrate is then inverted whilst maintaining the bridge and the deposited material is allowed to flow down to be substantially supported by the surface. The material is set in its substantially supported position, and the surface is removed.
Owner:AVIZA TECHNOLOGY INC
SIW-based portable liquid dielectric constant measurement system
InactiveCN109030955ALow costImprove convenienceDielectric property measurementsElectricityResonant cavity
The present invention discloses a SIW-based portable liquid dielectric constant measurement system. The system uses a traditional resonant cavity perturbation method as a measurement method and extracts the dielectric constant information of the liquid through a phase-locked loop circuit in connection with a feedback voltage-controlled oscillator based on a substrate integrated waveguide SIW resonator, wherein the SIW resonator places the to-be-measured liquid by inserting a quartz transistor in the middle; the relationship between the oscillation frequency deviation and the dielectric constant is extracted based on the feedback voltage-controlled oscillator in connection with the SIW; finally, the deviation of the oscillation frequency is converted into the voltage deviation through the phase-locked loop circuit, thereby measuring the information of the dielectric constant by simply measuring the voltage signal. Compared with the existing resonant cavity measurement technology that the dielectric constant can be only measured by depending on a vector network analyzer, the SIW-based portable liquid dielectric constant measurement system in the invention eliminates the dependence onlarge experimental equipment under the premise of ensuring accuracy and greatly reduces the cost of measurement.
Owner:HANGZHOU DIANZI UNIV
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