343 results about "Square Millimeter" patented technology

A filter for use in a coaxial cable network includes a printed circuit board having first and second opposed major surfaces, and first and second opposing sides. The opposed major surfaces are substantially parallel to a single plane, and are bisected by a longitudinal axis. The first and second opposing sides are substantially parallel to the longitudinal axis. The filter further includes an input terminal and an output terminal connected to the printed circuit board. The input terminal and the output terminal have an axis extending substantially parallel to the longitudinal axis. A signal path is disposed on the printed circuit board and extends from the input terminal toward the output terminal. The filter further includes a plurality of resonator elements fabricated upon the first opposed major surface. In one embodiment, the inductor elements are arranged in series along the signal path defining a footprint of less than 540 square millimeters. The filter passes a first range of frequencies in a provider bandwidth and attenuates a second range of frequencies in a personal data network bandwidth. In one embodiment, the resonator elements are parallel inductor elements and capacitor elements, the inductor elements being etched spiral inductors.

Disclosed herein are medical devices. The medical devices generally include a biocompatible nanostructured ceramic material having an average grain size dimension of about 1 nanometer to about 1000 nanometers, a strain to failure of at least about 1 percent, and a cross-sectional hardness greater than or equal to about 350 kilograms per square millimeter. Also disclosed are methods of making and using the medical devices.

A ceramic composite made by compacting a starting powder blend. The composite includes between about 50 volume percent and about 99 volume percent of a ceramic matrix; and between about 1 volume percent and about 50 volume percent as-processed silicon carbide whiskers. The ceramic composite having a fracture toughness (K_IC) of greater than about 4.0 MPam^1/2. The ceramic has a silicon carbide whisker density as measured in whiskers per square millimeter equal to or less than about 1500 times the volume percent of silicon carbide whiskers, but in a density sufficient for the ceramic composite to have the fracture toughness.

Disclosed herein are medical devices, particularly lumen-supporting devices, which include a biocompatible nanostructured ceramic material configured to be disposed adjacent to a luminal surface and having an average grain size dimension of about 1 nanometer to about 1000 nanometers, a strain to failure of at least about 1 percent, and a cross-sectional hardness greater than or equal to about 350 kilograms per square millimeter. Also disclosed are methods of making and using the lumen-supporting devices.

Apparatus for the delivery of an electrical field which facilitates the intracellular delivery of a therapeutic agent to a predetermined site within the tissue of a patient. The apparatus will comprise a plurality of penetrating electrodes arranged in a predetermined spatial relationship, each electrode with a cross sectional area contributing to the total cross sectional area of all electrodes, and structural means incorporating an inanimate source of energy operatively connected to the plurality of electrodes for deploying the electrodes, wherein the source of energy is sufficient to impart a force of at least 1000 pounds per square inch (0.7 kilogram per square millimeter) of total cross sectional area of all electrodes at the initiation of the deployment of the electrodes. The apparatus will also comprise means for generating an electrical field which facilitates the intracellular delivery of a therapeutic agent, which means is operatively connected to said electrodes at least in their deployed state.

An authentication system using a correlator that correlates an input with a reference wherein at least one of the input and reference comprises a phase volume mask having structures, preferably points, that are each less than about six microns in size and can have an aspect ratio (AR) greater than 1:1 so as to produce a phase encoded random pattern having millions of combinations in a mask that is as small as one square millimeter. The random pattern can be convolved with a second pattern, such as a biometric pattern, to produce a phase convolved mask. The correlator preferably is a nonlinear joint transform correlator that can use “chirp” encoding to permit the input to be located in a different plane than the reference. The correlator optically Fourier transforms images of the reference and input that are thereafter nonlinearly transformed and inverse Fourier transformed by a processor to determine the presence or absence of a correlation spike indicative of authenticity. A spatial light modulator (SLM) can be used as an input or reference and preferably is a liquid crystal panel having pixels or elements whose phase or grey scale intensity can be selectively controlled by a processor. The SLM can be used to display a biometric pattern, preferably scanned in real time from a person, that is correlated against an input or reference that can comprise a label on a card, a tag, or another object.

The present invention provides a steel sheet excellent in both a balance between strength and elongation and a balance between strength and hole expandability, in other words, a multi-phase steel sheet having an excellent balance between strength and hole expandability. The present invention is a multi-phase steel sheet excellent in hole expandability characterized in that: the steel sheet contains, as chemical components in mass, C: 0.03 to 0.15%, P: not more than 0.010%, S: not more than 0.003%, and either one or both of Si and Al in a total amount of 0.5 to 4%, and one or more of Mn, Ni, Cr, Mo and Cu in a total amount of 0.5 to 4%, with the balance consisting of Fe and unavoidable impurities; the microstructure at a section of the steel sheet is composed of either one or both of retained austenite and martensite which account(s) for 3 to 30% in total in area percentage and the balance consisting of either one or both of ferrite and bainite; the maximum length of the crystal grains in the microstructure is not more than 10 microns; and the number of inclusions 20 microns or larger in size at a section of the steel sheet is not more than 0.3 piece per square millimeter.

A display device includes a display panel including a main display area and a function additional area, at least a portion of the function additional area being surrounded by the main display area; wherein a plurality of first pixels are arranged in the function additional area, at least one light-transmitting area is arranged in the function additional area, and the area of each light-transmitting area is larger than or equal to 0.32 square millimeter. By reasonably setting the shape and area of the light-transmitting area and limiting the area of the first anode located in the light-transmitting area, it is guaranteed that the function additional area can be used for displaying images, and therefore the display panel can show the full-screen display effect and can also be used for installing a camera and other photosensitive elements, and the user experience is improved.

It is an object of the present invention to provide a polishing pad that is resistant to scratching and also has excellent flattening performance. One aspect of the present invention is a polishing pad, comprising a fiber-entangled body formed from fiber bundles made up of ultrafine fibers in which the average cross sectional area is between 0.01 and 30 μm², and a macromolecular elastomer, wherein part of the macromolecular elastomer is present inside the fiber bundles, whereby the ultrafine fibers are bundled, the number of fiber bundles per unit of surface area present in a cross section in the thickness direction is at least 600 bundles per square millimeter, and the volumetric ratio of a portion excluding voids is between 55 and 95%.

A particle counter for optically detecting an unconstrained particle of less than one micron in size suspended in a flowing liquid includes a sample chamber having a fluid inlet and a fluid outlet; a laser module producing a laser beam; a beam shaping optical system providing a multiple laser beam pattern in the sample chamber, and a CMOS optical detector located to detect light scattered by the particles in the sample chamber, the detector producing an electric signal characteristic of a parameter of the particle. The particle counter has a particle sensing area within the sample chamber in which the intensity of light is at least 10 Watts/mm², the sensing area having an area of 0.5 square mm or more. The detector has thirty or more detector array elements. In the preferred embodiment, the laser optical system reflects and refocuses the laser beam to effect multiple passes of the same laser beam through the sensing area.

The invention discloses a carbide-containing austempered ductile iron plowshare, which uses austempered ductile iron as a raw material, wherein the ductile iron comprises the following chemical components in percentage by weight: 3.40 to 3.80 percent of C, 2.20 to 2.80 percent of Si, 0.20 to 0.50 percent of Mn, less than or equal to 0.03 percent of P, less than or equal to 0.02 percent of S, 0.03 to 0.04 percent of Mg, 0.01 to 0.02 percent of Re, 0.25 to 0.5 percent of Cr, and the balance of Fe; the graphite metallurgical structure in the ductile iron is characterized by a spheroidization rate of above grade-2, a graphite size of above grade-6 and a graphite quantity of more than 100 per square millimeters. The matrix of the ductile iron is martensite and lower bainite and residual austenite and carbide, wherein the carbide is less than 2 weight percent. The carbide-containing austempered ductile iron plowshare has the advantages of improving the conventional process for finely casting plowshares by using low alloy steel in the past, having a service life which is more than three times as long as that of the low alloy steel plowshares and a price as low as two thirds of that of the low alloy steel plowshares and greatly reducing agricultural production cost.

The invention relates to an Al-Er alloy conducting wire material and a preparation method thereof, and belongs to the technical field of metal alloy. The function of Er in an aluminum alloy conducting wire is not reported up to the present. The invention discloses a material for the aluminum alloy conducting wire, which comprises the following chemical compositions: 0.01 to 0.4 weight percent of erbium, the balance being Al and unavoidable impurity. The conducting wire with required specification is prepared by smelting, founding and cold-hot processing. The hardness of the conducting wire is 15.83 to 24.82 HBS; the specific resistance of the conducting wire is 0.02806 to 0.02837 ohm square millimeter in per meter; and the electric conductivity of the conducting wire is 60.8 to 61.4 percent IACS. The alloy is a material with favorable cost performance and huge potential for application on high-strong heat-resisting aluminum alloy conducting wires.

A particle sensor for optically detecting an unconstrained particle suspended in a flowing gas includes a sample chamber having a gas inlet and a gas outlet; a gas flow system for flowing said gas from said gas inlet through said sample chamber to said gas outlet, a source of light; an optical system directing said light through said sample chamber, an optical collection system located to collect light scattered by said particles in the gas, and a detection system located to detect the collected light. The total pressure drop through said gas flow system is 3 inches of water or less. The gas flow system includes an axial fan, which may be a high static pressure fan or a counter-rotating fan. In a 1.0 CFM system, the gas inlet nozzle has an area of 25 square millimeters or more.

The invention relates to a refrigerant machine oil composition, comprising a mixed Alpha olefin polymer oil which is adopted as base oil and additive, wherein, a viscosity of the mixed Alpha olefin polymer oil at 40 DEG C ranges from 3 square millimeter per second to less than 6 square millimeter per second; the mixed Alpha olefin polymer oil is C15-C22 mixed isoolefine, C15-C22 mixed isoparaffin or the mixture of C15-C22 mixed isoolefine and C15-C22 mixed isoparaffin. The refrigerant machine oil composition provided by the invention has the advantages that: (1) good solubility with R600A refrigerating fluid, and floc point being lowered to minus 70 DEG C; (2) excellent fluidity in low temperature, with a pour point lowering to minus 70 DEG C, and a kinematic coefficient of the viscosity being less than 500 square millimeter per second at minus 40 DEG C; (3) comparatively apparent energy saving effect which is respectively higher than the refrigerant machine oil with a viscosity of 22 and 10 square millimeter per second by 14 percent and 4 percent at 40 DEG C.

The invention provides a surface enhanced Raman scattering (SERS) substrate and a preparation method thereof. The SERS substrate comprises a silicon substrate and a chemical modification layer arranged on the silicon substrate. The chemical modification layer includes a hydrophilic silane compound layer with area smaller than 7.5 square millimeter; a hydrophobic silane compound layer surrounding the hydrophilic silane compound layer; and a mono-layer metal nanoparticle layer arranged on the hydrophilic silane compound layer. Under action of the hydrophilic silane compound layer and the hydrophobic silane compound layer, aqueous solution of to-be-detected substance is concentrated on the middle small-area hydrophilic silane compound layer, to improve concentration degree of aqueous solution of the to-be-detected substance. The metal nanoparticle layer realizes more uniform distribution of aqueous solution of the to-be-detected substance. Therefore, the SERS substrate can improve signal intensity and detection sensitivity.

The invention provides an abnormal-shape filament non-woven fabric, wherein non-woven fabric coiled material consists of abnormal-shape fiber filaments, the length of each abnormal-shape fiber filament is more than or equal to 1000mm, the specific surface area of the abnormal-shape filament is more than 1.3 compared with that of the fiber with the same material, the equal denier and the circular cross section, the abnormal-shape fiber filaments consist of low-melting point thermoplastic high polymers and high-melting point thermoplastic high polymers, the low-melting point thermoplastic high polymers of which the melting point is less than 150 DEG C are arranged on the surface layers of the abnormal-shape fiber filaments, the abnormal-shape fiber filaments are glued with one another by the low-melting point thermoplastic high polymers arranged on the surface layers of the abnormal-shape fibers to form into the non-woven fabric coiled material, each gluing point among each abnormal-shape fiber is the surface layers of the low-melting point thermoplastic high polymers of two abnormal-shape fiber filaments contacted with each other, and the mean value of the area of each gluing point is less than 0.01 square millimeters. The non-woven fabric is fluffy and flexible, thereby being elastic; the transportation link is reduced, and the manufacture cost is reduced; and the non-woven fabric is quick in liquid absorption and good in flow guide effect.

Solar concentrator devices and techniques for the fabrication thereof are provided. In one aspect, a solar concentrator device is provided. The solar concentrator device comprises at least one solar converter cell; a heat sink; and a liquid metal between the solar converter cell and the heat sink, configured to thermally couple the solar converter cell and the heat sink during operation of the device. The solar converter cell can comprise a triple-junction semiconductor solar converter cell fabricated on a germanium (Ge) substrate. The heat sink can comprise a vapor chamber heat sink. The liquid metal can comprise a gallium (Ga) alloy and have a thermal resistance of less than or equal to about five square millimeter degree Celsius per Watt (mm²° C./W).

A low alloy steel is provided for oil country tubular goods with a yield strength between 654 MPa and 757 MPa, and possessing excellent resistance to HIC and SSC in high-pressure hydrogen sulfides environment, and comprising, by mass %: 0.10 to 0.60% C; 0.05 to 0.5% Si; 0.05 to 3.0% Mn; 0.025% or less P; 0.010% or less S; 0.005 to 0.10% Al; 0.01% or less O (oxygen); 3.0% or less Cr; and 3.0% or less Mo, wherein the amount of Cr and Mo content is 1.2% or more, with the balance being Fe and impurities, and the number of nonmetallic inclusions whose major axis is 10 μm or more is 10 per square millimeter in the inspected cross section. The present invention provides a low alloy steel for oil country tubular goods possessing excellent resistance to sulfide stress cracking, and a seamless steel pipe.

The invention relates to an inkjet head structure which is used for inkjet printing with self-colored ink, comprising a chip and a plurality of heaters which are arranged on the chip with the density which is higher than the density of 14 heaters per square millimeter (mm2), furthermore, the heaters are arrayed to form at least two axis assemblies along the parallel axes with intervals.

A method of producing cast steel strip having low surface roughness and low porosity by casting with molten steel having a total oxygen content of at least about 70 ppm and a free oxygen content between 20 and 60 ppm, and a temperature that allows a majority of any oxide inclusions to be in a liquidus state. The total oxygen content may be at least 100 ppm and the the free oxygen content between 30 and 50 ppm. The steel strip produced by the method may have a per unit area density of at least about 120 oxide inclusions per square millimeter to a depth of about 2 microns from the strip surface.