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90results about How to "Reduce heat spread" patented technology
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Electrosurgical instrument that directs energy delivery and protects adjacent tissue
ActiveUS8128624B2Reduce heat spreadWeaken energySurgical instrument detailsSurgical forcepsTransmittanceBiomedical engineering
An electrode sealing assembly is designed for use with an electrosurgical instrument for sealing tissue and includes first and second jaw members each having an insulative housing and being movable from a first position in spaced relation relative to one another to at least one second position for grasping tissue therebetween. Each of the jaw members includes an electrically conductive sealing member disposed within the respective insulative housing. At least one of the insulative housings includes at least one tissue engaging surface configured to extend beyond the electrically conductive sealing member of one of the jaw members. The tissue engaging surface of the insulative housing cooperates with the opposing insulative housing of the opposing jaw member to both pinch and spread tissue when the jaw members are moved to the second position to decrease extraneous energy transmittance to tissue surrounding the jaw members.
Owner:COVIDIEN AG
Electrosurgical generator with adaptive power control
InactiveUSRE40388E1Lower Level RequirementsImproved tissue sealing characteristicPulse automatic controlSurgical instruments for heatingThermal energyVessel sealing
An electrosurgical generator has an output power control system that causes the impedance of tissue to rise and fall in a cyclic pattern until the tissue is desiccated. The advantage of the power control system is that thermal spread and charring are reduced. In addition, the power control system offers improved performance for electrosurgical vessel sealing and tissue welding. The output power is applied cyclically by a control system with tissue impedance feedback. The impedance of the tissue follows the cyclic pattern of the output power several times, depending on the state of the tissue, until the tissue becomes fully desiccated. High power is applied to cause the tissue to reach a high impedance, and then the power is reduced to allow the impedance to fall. Thermal energy is allowed to dissipate during the low power cycle. The control system is adaptive to tissue in the sense that output power is modulated in response to the impedance of the tissue.
Owner:COVIDIEN AG
Ultrasonic surgical instruments
ActiveUS9375230B2Reduce heat damageImprove cooling effectDiagnosticsSurgical instrument detailsSurgical deviceUltrasonic Surgery
An ultrasonic surgical instrument is provided. The ultrasonic surgical instrument includes a housing having an elongated shaft extending therefrom. The shaft defines a longitudinal axis therethrough and has at least one jaw member disposed at a distal end thereof. The jaw member(s) is movable between open and clamping configurations. A probe extends through the shaft and operably couples to the housing. The probe includes a cutting blade at a distal end thereof adjacent the jaw member(s) to treat tissue of interest. The jaw member(s) and cutting blade are configured such that heat damage to tissue adjacent tissue of interest that has been treated by the cutting blade is reduced and / or eliminated.Owner:TYCO HEALTHCARE GRP LP
Electrosurgical instrument that directs energy delivery and protects adjacent tissue
ActiveUS20060217709A1Weaken energyReduce heat spreadSurgical instruments for heatingSurgical forcepsTransmittanceBiomedical engineering
An electrode sealing assembly is designed for use with an electrosurgical instrument for sealing tissue and includes first and second jaw members each having an insulative housing and being movable from a first position in spaced relation relative to one another to at least one second position for grasping tissue therebetween. Each of the jaw members includes an electrically conductive sealing member disposed within the respective insulative housing. At least one of the insulative housings includes at least one tissue engaging surface configured to extend beyond the electrically conductive sealing member of one of the jaw members. The tissue engaging surface of the insulative housing cooperates with the opposing insulative housing of the opposing jaw member to both pinch and spread tissue when the jaw members are moved to the second position to decrease extraneous energy transmittance to tissue surrounding the jaw members.
Owner:COVIDIEN AG
Mitigation of propagation of thermal runaway in a multi-cell battery pack
ActiveUS7433794B1Reduce temperature riseIncrease rangeElectrical testingVehicular energy storageEnergy storageBattery pack
A method of mitigating propagation of a thermal event in an energy storage system having a plurality of cells is disclosed. The method includes the steps of identifying the heat sources within the energy storage system and plurality of cells. The method then controls a temperature of the energy storage system and plurality of cells and also detects predetermined conditions within the energy storage system. The method then performs a predetermined action based on when one of the predetermined conditions is detected. A plurality of sensors and switches along with associated hardware or software will be used to control the temperature of the energy storage system upon detection of predetermined conditions involving overheating, over current, over voltage of the like.
Owner:TESLA INC
Vessel sealing instrument with reduced thermal spread and method of manufacture therefor
ActiveUS8887373B2Easy to installImprove adhesionMetal rolling stand detailsSurgical instrument detailsVessel sealingEngineering
An electrosurgical vessel sealing instrument having a first and a second opposing jaw member at a distal end thereof, wherein each jaw member includes a jaw housing, a seal plate having a tissue contacting surface and a side wall, and an insulating region disposed on the side wall of the seal plate. The instrument includes the ability to move the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue. The insulating region enables precision overmolding of the jaw housing to the seal plate, while advantageously reducing thermal spread and edge cutting during vessel sealing procedures.
Owner:COVIDIEN LP
Illumination system with integrated heat dissipation device for use in display systems employing spatial light modulators
ActiveUS7434946B2Reduce heat spreadTemperature controlTelevision system detailsMeasurement apparatus componentsSpatial light modulatorIntegrator
Disclosed herein is an illumination system for use in display systems employing spatial light modulators. The illumination system comprises a fastening mechanism for securing the bonding of the walls of the light integrator of the illumination system. A heat dissipation mechanism can be alternatively provided for reducing the temperature of the illumination system by dissipating the heat thereof.
Owner:TEXAS INSTR INC
Vessel sealing system using capacitive RF dielectric heating
ActiveUS7780662B2Heating evenlyReduce heat spreadSurgical instruments for heatingCoatingsElectricityVessel sealing
An electrosurgical system for sealing vessels using capacitive (RF) dielectric heating and a method thereof are provided. The system includes an electrosurgical instrument having an end effector with parallel plate electrodes that will clamp onto a vessel and maintain a specified gap distance; however, the electrodes will be coated with a non-conductive dielectric material. Such an end effector will ensure that direct conduction between the electrodes does not occur through tissue or fluids and effectively creates a parallel plate capacitor with a dielectric, e.g., tissue and coating, in between the plates. The electrosurgical instrument will be activated with an AC signal at a specified RF frequency, e.g., a Debye resonance frequency, via an electrosurgical generator. An effective AC current will flow through the tissue and cause heating due to fictional losses from rotating polar molecules in the tissue.
Owner:COVIDIEN AG
Method for manufacturing vessel sealing instrument with reduced thermal spread
ActiveUS9011435B2Easy to installImprove adhesionWave amplification devicesDecorative surface effectsVessel sealingEngineering
An electrosurgical vessel sealing instrument having a first and a second opposing jaw member at a distal end thereof, wherein each jaw member includes a jaw housing, an inner tissue engaging surface, and an insulating layer disposed therebetween. The instrument includes the ability to move the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue. The jaws include a tissue-contacting seal plate having obverse and reverse surfaces. A series of ribs extend from the reverse surface of the seal plate into an insulating layer, which, in turn, is affixed to a jaw housing. The ribbed structure of the seal plate reduces thermal spread and edge cutting during vessel sealing procedures, leading to improved surgical outcomes.
Owner:TYCO HEALTHCARE GRP LP
Vessel Sealing Instrument with Reduced Thermal Spread and Method of Manufacture Therefor
ActiveUS20130226178A1Easy to installImprove adhesionLamination ancillary operationsWave amplification devicesVessel sealingEngineering
An electrosurgical vessel sealing instrument having a first and a second opposing jaw member at a distal end thereof, wherein each jaw member includes a jaw housing, an inner tissue engaging surface, and an insulating layer disposed therebetween. The instrument includes the ability to move the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue. The jaws include a tissue-contacting seal plate having obverse and reverse surfaces. A series of ribs extend from the reverse surface of the seal plate into an insulating layer, which, in turn, is affixed to a jaw housing. The ribbed structure of the seal plate reduces thermal spread and edge cutting during vessel sealing procedures, leading to improved surgical outcomes.
Owner:TYCO HEALTHCARE GRP LP
System and method for LED packaging
ActiveUS8207554B2Improve thermal conductivityIncreasing the thicknessSemiconductor/solid-state device detailsSolid-state devicesEngineeringConductive materials
System and method for LED packaging. The present invention is directed to optical devices. More specifically, embodiments of the presentation provide LED packaging having one or more reflector surfaces. In certain embodiments, the present invention provides LED packages that include thermal pad structures for dissipating heat generated by LED devices. In particular, thermal pad structures with large surface areas are used to allow heat to transfer. In certain embodiments, thick thermally conductive material is used to improve overall thermal conductivity of an LED package, thereby allowing heat generated by LED devices to dissipate quickly. Depending on the application, thermal pad structure, thick thermal conductive layer, and reflective surface may be individually adapted in LED packages or used in combinations. There are other embodiments as well.
Owner:KORRUS INC
Construction method of large-volume concrete bearing platform with one-time pouring in winter
The invention discloses a construction method of a large-volume concrete bearing platform with one-time pouring in winter, comprising the following steps of: step 1, binding steel reinforcement cages; step 2, laying cooling water pipelines and temperature measuring elements; step 3, constructing formed templates, wherein the construction process comprises delimiting template lines and constructing formed brick dies; step 4, pouring concrete; and step 5, conserving and finishing surface: finishing surface in time when completing the pouring of the concrete, carrying out the surface finishing twice, carrying out the first surface finishing when pouring the concrete to the top, carrying out the second surface finishing when the concrete is initially congealed, and adopting a mode that external stores water for conserving when the concrete is initially congealed. The invention has the advantages of reasonable design, simple construction method step, convenient operation, short construction period, one-time pouring molding and strong maneuverability, the large-volume concrete bearing platform constructed for molding in winter has good quality, the poured concrete is not frozen, and the surface of the bearing platform can not have temperature cracks.
Owner:CHINA RAILWAY 20 BUREAU GRP +3
Vibration and heat insulating board
ActiveUS7065963B2Efficient processReduce in quantityExhaust apparatusNon-rotating vibration suppressionSource surfaceVibration source
A vibration and heat insulating board fixed so as to cover at least part of a heat source while forming a gap against the heat source surface, in order to lessen diffusion of heat from the heat source fixed in a vibration source, in which the heat source and the vibration and heat insulating board are coupled by means of a collar member having a pair of locking pieces fitted to the vibration and heat insulating board main body and bolted to a mounting part of the heat source, and ring-shaped coil members interposed between the pair of locking pieces of the collar member and the vibration and heat insulating board main body.
Owner:NICHIAS CORP
Asymmetrical electrodes for bipolar vessel sealing
ActiveUS9498278B2Improved sealing energyReduce the amount requiredDiagnosticsCatheterVessel sealingBipolar electrosurgery
Bipolar electrosurgical instrument having a first and a second opposing jaw member at a distal end thereof, wherein each jaw member includes an outer housing, and an inner tissue engaging surface corresponding to the inner tissue engaging surface of the opposing jaw. The instruments includes the ability to move the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue. The jaws include asymmetrical electrodes disposed on the inner tissue engaging surfaces. A first contact region of the electrode has a greater surface area than that of the second contact region. During resection procedures wider electrodes impart improved sealing energy to the patient-side vessel while providing sufficient energy to resected tissue to effect hemostasis.
Owner:COVIDIEN LP
System and Method for LED Packaging
ActiveUS20110140150A1Improve thermal conductivityIncreasing the thicknessSemiconductor/solid-state device detailsSolid-state devicesEngineeringConductive materials
System and method for LED packaging. The present invention is directed to optical devices. More specifically, embodiments of the presentation provide LED packaging having one or more reflector surfaces. In certain embodiments, the present invention provides LED packages that include thermal pad structures for dissipating heat generated by LED devices. In particular, thermal pad structures with large surface areas are used to allow heat to transfer. In certain embodiments, thick thermally conductive material is used to improve overall thermal conductivity of an LED package, thereby allowing heat generated by LED devices to dissipate quickly. Depending on the application, thermal pad structure, thick thermal conductive layer, and reflective surface may be individually adapted in LED packages or used in combinations. There are other embodiments as well.
Owner:KORRUS INC
Semiconductor device having a multi-channel type MOS transistor
ActiveUS20100155827A1Reduce heat spreadLower resistanceSemiconductor/solid-state device manufacturingSemiconductor devicesDevice materialMetal silicide
In a method of manufacturing a semiconductor device, an active channel pattern is formed on a substrate. The active channel pattern includes preliminary gate patterns and single crystalline silicon patterns that are alternately stacked with each other. A source / drain layer is formed on a sidewall of the active channel pattern. Mask pattern structures including a gate trench are formed on the active channel pattern and the source / drain layer. The patterns are selectively etched to form tunnels. The gate trench is then filled with a gate electrode. The gate electrode surrounds the active channel pattern. The gate electrode is protruded from the active channel pattern. The mask pattern structures are then removed. Impurities are implanted into the source / drain regions to form source / drain regions. A silicidation process is carried out on the source / drain regions to form a metal silicide layer, thereby completing a semiconductor device having a MOS transistor.
Owner:SAMSUNG ELECTRONICS CO LTD
Systems and methods for generating electrosurgical energy using a multistage power converter
ActiveUS20150032096A1Good dynamic responseReduce heat spreadAc-dc conversion without reversalEfficient power electronics conversionResonant inverterElectricity
The electrosurgical systems and methods according to the present disclosure use a multi-stage power converter for generating electrosurgical energy. The electrosurgical systems include an electrosurgical generator having a power converter coupled to an electrical energy source and configured to generate electrosurgical energy. The power converter includes a boost converter configured to convert a first direct current from the electrical energy source to a second direct current, and a phase-shifted pulse width modulation (PS-PWM) resonant inverter configured to invert the second direct current to an alternating current. The electrosurgical generator also includes a plurality of sensors configured to sense a voltage and a current of the generated electrosurgical energy and a controller coupled to the power converter and the plurality of sensors. The controller includes a signal processor configured to determine tissue impedance based on the sensed voltage and current, and an output controller configured to select one of a plurality of output characteristics based on the determined tissue impedance, and to generate control signals to control the boost converter and the PS-PWM resonant inverter, according to the selected output characteristic.
Owner:TYCO HEALTHCARE GRP LP
Method of manufacturing a semiconductor device having a multi-channel type MOS transistor
ActiveUS7696046B2Reduce heat spreadLower resistanceSemiconductor/solid-state device manufacturingSemiconductor devicesMetal silicideEngineering
In a method of manufacturing a semiconductor device, an active channel pattern is formed on a substrate. The active channel pattern includes preliminary gate patterns and single crystalline silicon patterns that are alternately stacked with each other. A source / drain layer is formed on a sidewall of the active channel pattern. Mask pattern structures including a gate trench are formed on the active channel pattern and the source / drain layer. The patterns are selectively etched to form tunnels. The gate trench is then filled with a gate electrode. The gate electrode surrounds the active channel pattern. The gate electrode is protruded from the active channel pattern. The mask pattern structures are then removed. Impurities are implanted into the source / drain regions to form source / drain regions. A silicidation process is carried out on the source / drain regions to form a metal silicide layer, thereby completing a semiconductor device having a MOS transistor.
Owner:SAMSUNG ELECTRONICS CO LTD
Humidification technology and humidification system for large power PEM fuel battery test platform
InactiveCN101165952AReduce consumptionGuaranteed SaturationFuel cell heat exchangeElectrical testingDesign planLiquid medium
This invention puts forward a design plan for wetting technology and system used in test platforms of large power fuel cells, which puts forward a heat-exchange system of two stages or multiple stages to transfer heat generated by fuel cells to reactant gas entering into the fuel cell, in order to increase the gas / liquid medium-transfer ability of the wet system, a high efficient filled converse flow spray tower is taken as a main wetting device and temperature of a spray medium is controlled accurately to guarantee temperature of wetting and saturation of vapor, which can control the relative humidity of the reactant gas entering into a fuel cell stack within +-2% and relative temperature in +-0.1deg.C by controlling the temperature of an overheater with an outer heater and efficient heat-transmitting filling component accurately, and a foam-removing system with accurate temperature control is matched to avoid liquid from entering into the back system.
Owner:SHANGHAI PALTON FUEL CELL SYST
Laser optical path guiding system of laser sinter molding equipment
InactiveCN103111756ARealize printingCompact structureIncreasing energy efficiencyLaser beam welding apparatusBeam expanderLight energy
The invention discloses a laser optical path guiding system of laser sinter molding equipment. The laser optical path guiding system of the laser sinter molding equipment comprises a laser source, a beam expander matched with the laser source, a scanning galvanometer device matched with the beam expander and a flat field focusing lens connected with the scanning galvanometer device. The laser sinter molding equipment is provided with a molding platform, a focal plane of the flat field focusing lens is overlapped with the molding platform, and the focus point of the lens is arranged at the center of the molding platform. Due to the mentioned structure, not only can printing of a three-dimensional component be achieved very well, but also each optical component can be connected into a whole without clearances, drifting of light beams is avoided, at the same time dust and vibration are prevented. In addition, protection of optical elements like the galvanometers and the like is considered. The laser optical path guiding system is compact in structure, short in optical path, small in light energy consumption, and convenient to debug.
Owner:余振新
Ultrasonic surgical instruments
ActiveUS20140012297A1Reduce heat damageImprove cooling effectDiagnosticsSurgical instrument detailsSurgical deviceUltrasonic Surgery
An ultrasonic surgical instrument is provided. The ultrasonic surgical instrument includes a housing having an elongated shaft extending therefrom. The shaft defines a longitudinal axis therethrough and has at least one jaw member disposed at a distal end thereof. The jaw member(s) is movable between open and clamping configurations. A probe extends through the shaft and operably couples to the housing, The probe includes a cutting blade at a distal end thereof adjacent the jaw member(s) to treat tissue of interest. The jaw member(s) and cutting blade are configured such that heat damage to tissue adjacent tissue of interest that has been treated by the cutting blade is reduced and / or eliminated.
Owner:TYCO HEALTHCARE GRP LP
Low-resistance enhanced heat transfer structure based on nanometer super-wetting interface
ActiveCN110425914AShorten the length of the runnerReduce thicknessCoatingsModifications by conduction heat transferIsosceles trapezoidEnhanced heat transfer
The invention discloses a low-resistance enhanced heat transfer structure based on a nanometer super-wetting interface. The low-resistance enhanced heat transfer structure comprises a lower embedded microchannel layer and an upper manifold channel layer, wherein embedded microchannels are perpendicular to manifold channels; the lower embedded microchannel layer consists of a plurality of embeddedmicrochannel units; the cross section of each embedded microchannel of each unit is a rectangular divergent cross section along the flowing direction of a cooling working medium; the shape of each embedded microchannel of each unit is isosceles trapezoid; the upper manifold channel layer is composed of the S-shaped manifold channels; and two adjacent S-shaped manifold channels form inlets and outlets of the manifold channels. According to the low-resistance enhanced heat transfer structure, a microchannel radiator is constructed by utilizing a layered flow structure, the heat transfer characteristic and the resistance characteristic can be simultaneously improved by combining the microchannel radiator with the nano super-wetting interface and the divergent microchannel section, and the low-resistance enhanced heat exchange of the microchannel radiator is achieved under the condition of higher heat dissipation efficiency.
Owner:CHINA ACADEMY OF SPACE TECHNOLOGY
Production technique for external corrugated reinforced plastic heat-preservation heating/cooling pipe
ActiveCN105402502ALow thermal conductivityGood temperature resistanceThermal insulationFlexible pipesEngineeringMechanical engineering
The invention belongs to the technical field of building pipe materials and particularly relates to a production technique for an external corrugated reinforced plastic heat-preservation heating/cooling pipe. The production technique for the external corrugated reinforced plastic heat-preservation heating/cooling pipe comprises the steps that a heat-resistant polyethylene inner pipe body is prepared; a fiber reinforced layer is prepared; a plastic cladding layer is prepared; a foamed heat-preservation layer is prepared; and a polyethylene outer pipe body is prepared. The using temperature of the corrugated reinforced plastic heat-preservation heating/cooling pipe produced through the technique is -40-85 DEG C, the heating requirement of the plastic pipe can be met, and the pipe can also be used as a centralized cooling pipeline.
Owner:盘锦建硕管业有限公司
Phase-changing memory unit with similar super lattice structure and preparation method thereof
InactiveCN102810636ACrystallization temperature is easily adjustableRaise the maximum crystallization temperatureElectrical apparatusNanoinformaticsPhase-change memoryCrystallization temperature
The invention provides a phase-changing memory unit with a similar super lattice structure, which comprises a phase-changing material layer. In the phase-changing material layer, the similar super lattice structure is formed by periodic and alternate growth of a single GaSb layer and a single phase-changing material Sb2Te3 layer in a nano-thick single layer. The single GaSb layer is 2-8nm thick, and the single phase-changing material Sb2Te3 is 3-12nm thick. The similar super lattice material has the advantages of adjustable crystallization temperature, low thermal conductivity, good thermal stability and high phase-changing speed. When the similar super lattice material is applied in a phase-changing memory, the phase-changing memory has the advantages of high data retention capability, high erasing and writing speed and low power consumption. A particularly preferred similar super lattice GaSb (4 nm) / Sb2Te3 (6nm) has more advantages than other components in the performance of materials and devices.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Vibration and heat insulating board
ActiveUS20050028963A1Increase in costHigh effectExhaust apparatusNon-rotating vibration suppressionElectrical and Electronics engineeringVibration source
A vibration and heat insulating board 10 fixed so as to cover at least part of a heat source while forming a gap against the heat source surface, in order to lessen diffusion of heat from the heat source fixed in a vibration source, in which the heat source 20 and the vibration and heat insulating board 10 are coupled by means of a collar member 11 having a pair of locking pieces 121, 131 fitted to the vibration and heat insulating board main body 14 and bolted to a mounting part 16 of the heat source 20, and ring-shaped coil members 15, 15 interposed between the pair of locking pieces 121, 131 of the collar member 11 and the vibration and heat insulating board main body 14.
Owner:NICHIAS CORP
Direct contact semiconductor cooling
ActiveUS7157793B2Thermal spreading resistanceReduce heat spreadSemiconductor/solid-state device testing/measurementSemiconductor/solid-state device detailsSemiconductor packageMmic power amplifier
Thermal spreading resistance, associated with small geometry electronic features that generate heat on a semiconductor, may be reduced through the addition of a thermally conductive fluid. For example, a dielectric fluid may be used within a volume between a semiconductor package and the semiconductor substrate. Therefore, direct thermal cooling may be employed to reduce the thermal spreading resistance often encountered in MMIC power amplifier devices. Furthermore, exemplary methods to achieve this sealing are described herein.
Owner:VIASAT INC
Control method and control system for delaying thermal diffusion of power battery pack
PendingCN111430840AImprove the safety of useReduce the temperatureSecondary cellsVehicular energy storagePower batteryElectrical battery
The invention discloses a control method and a control system for delaying the thermal diffusion of a power battery pack. The control method comprises the following steps of acquiring the running state of a single battery of the power battery pack; judging whether a single battery subjected to thermal runaway exists or not according to the running state; if the thermal runaway single batteries exist, obtaining the state of the power battery pack; and if it is recognized that the power battery pack is in a power-off state, controlling the power supply state of a cooling system used for coolingthe power battery pack, so that the cooling system is in a circulating state. According to the control method for delaying the thermal diffusion of the power battery pack, when any single battery in the power battery pack is abnormally overheated, the heat generated by the thermal runaway single batteries can be diffused to other single batteries, so that the temperatures of the thermal runaway single batteries and the adjacent single batteries are reduced, the thermal runaway of the adjacent single batteries is delayed or prevented, enough emergency time is provided for a user, and the use safety of the power battery pack is improved.
Owner:SVOLT ENERGY TECHNOLOGY CO LTD
Actuator
ActiveUS20140354085A1Reduce couplingLow production costCooling/ventillation arrangementFlexible microstructural devicesEngineeringActuator
According to the present invention there is provided an actuator comprising, a movable member, the movable member comprising a support frame which is configured such that it can oscillate about a first oscillation axis and a mirror which is fixed to the support frame such that oscillation of the support frame will effect oscillation of the mirror; an coil, which cooperates with the support frame; one or more boundary portions provided between the support frame and the mirror which reduce the influence of warp transmitted from an edge of the support frame to the mirror, as the support frame oscillates about the first oscillation axis; wherein the support frame further comprises one or more cut-out regions, wherein the one or more cut-out regions are configured to be parallel to at least a portion of the coil, to reduce stress on the coil as the support frame oscillates about the first oscillation axis and/or to reduce the temperature dependence of the properties of the actuator.
Owner:GOOGLE LLC
Method of fabricating pattern
InactiveCN102338983AEasy to manufactureImprove light absorptionPrinted circuit aspectsPhotomechanical apparatusSemi solidEngineering
Disclosed is a method of fabricating a pattern, and more particularly is a method of fabricating a pattern by using laser. The method includes: a first step of forming an organometallic ink layer 20 on a substrate; a second step of curing the organometallic ink layer 20 into a semi-solid state; a third step of forming a pattern by irradiating laser onto the semi-solid organometallic ink layer 20, so that the irradiated portion of the organometallic ink layer 20 is changed into a solid state; and a fourth step of leaving only the pattern by removing the semi-solid organometallic ink layer 20.
Owner:KOREA ADVANCED INST OF SCI & TECH
Water permeable concrete
ActiveCN109400078AIncrease slumpImprove liquiditySolid waste managementCeramicwareCompressive strengthUltimate tensile strength
The invention relates to the technical field of the concrete processing and in particular to water permeable concrete. The water permeable concrete comprises the following raw material components in parts by weight: 300-380 parts of a binding material, 1000-1250 parts of coarse aggregate, 10-30 parts of coal ash floating beads, 1-5 parts of an air entraining agent, 5-12 parts of an additive, 3-5 parts of steel fibers, 100-135 parts of water and 10-30 parts of organic fibers, wherein the organic fibers comprise polyacrylonitrile fibers and Dura fibers of which a weight matching ratio is 1:(0.5-1). The concrete has better water permeability performance, and has higher compressive strength and freezing and thawing resistance.
Owner:辛集市建和预拌混凝土有限公司
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