3266 results about "Young's modulus" patented technology

The present invention provides methods, devices and device components for fabricating patterns on substrate surfaces, particularly patterns comprising structures having microsized and / or nanosized features of selected lengths in one, two or three dimensions. The present invention provides composite patterning devices comprising a plurality of polymer layers each having selected mechanical properties, such as Young's Modulus and flexural rigidity, selected physical dimensions, such as thickness, surface area and relief pattern dimensions, and selected thermal properties, such as coefficients of thermal expansion, to provide high resolution patterning on a variety of substrate surfaces and surface morphologies.

An adaptive optic for refractive lens exchange or cataract patients. The intracapsular implant comprises an elastomeric monolith with an equilibrium memory shape that imparts to the capsular sac's periphery the natural shape of the capsule in an accommodated state. In one embodiment, the monolith carries a recessed deformable central lens portion having an ultralow modulus that allows for high accommodative amplitude in response to equatorial tensioning. In a preferred embodiment, the adaptive optic defines an anisotropic modulus with a plurality of on-axis, rotationally symmetric elastomer block portions each having a different Young's modulus. The invention further provides composite materials for enhancing deformation of lens curvature, including the use of auxetic polymeric materials and negative stiffness materials. In preferred embodiments, at least a portion of the lens is fabricated of a shape memory polymer that provides a memory shape and a temporary shape with a reduced cross-sectional shape for introduction into the patient's eye.

A wafer holder is provided having high rigidity and an enhanced heat-insulating effect that allow positional accuracy and heating uniformity to be improved, a chip to be rapidly heated and cooled, and the manufacturing cost to be reduced, and a wafer prober apparatus on which the wafer holder is mounted. The wafer holder of the present invention includes a chuck top for mounting a wafer, a support member for supporting the chuck top, and a stand for supporting the support member. The chuck top has a thermal conductivity K1 and a Young's modulus Y1; the support member has a thermal conductivity K2 and a Young's modulus Y2; and the stand has a thermal conductivity K3 and a Young's modulus Y3. K1>K2 and K1>K3; and Y3>Y1 and Y3>Y2.

The invention relates to a balanced optical display comprising a flexible substrate, an electrical optical display element comprising at least one conductive layer adjacent to the display element wherein at least one of the conductive layers has an elongation to break of less than 2 percent, and a balancing layer on the side opposite to the substrate, wherein the thickness and Young's modulus of each layers of the display is selected in such a way so that the display capable of being formed to a radius of curvature of 10 cm without damage.

A honeycomb structure including a plurality of porous ceramic members which are bonded through an adhesive layer, each of the porous ceramic members has a plurality of cells, which are arranged in parallel while being separated by cell walls. The cells extend in a longitudinal direction of the honeycomb structure. In the honeycomb structure, the following relationship is satisfied: 2≦B≦100 / 3×A−10 / 3  (1) where A (g / cm3) designates apparent density of the porous ceramic members, and B (GPa) designates Young's modulus of the adhesive layer.

A low profile resorbable stent comprising an oriented, resorbable material, wherein said material has Young's Modulus and tensile strength in the oriented state greater than Young's modulus and tensile strength of unoriented material is disclosed. The low profile resorbable stent has a resorbable material with Young's modulus about 2-300 GPa and / or tensile strength 50-200 MPa. The resorbable material of the present invention is oriented such that the tensile strength and modulus are higher than the unoriented materials allowing for the low profile stent design. Also disclosed is a method of manufacturing a low profile resorbable stent. The method comprises providing an extrudate comprising a resorbable material, inducing molecular alignment in the extrudate to form an oriented extrudate and forming the stent from the oriented extrudate. The extrudate of resorbable material can be a sheet, tube or some other form. The sheet extrudate is stretched axially or biaxially to induce molecular alignment. The tubular extrudate is blow-molded to induce molecular alignment.

In the manufacture of a structural member comprising a thermoplastic composite core with an exterior reinforcing layer, the core member is initially extruded in the shape of a profile. The profile is then contacted with reinforcing fiber and resin to form the exterior reinforcing layer. The exterior thermosetting layer is cured to form a reinforcing layer. The structural member is preferably manufactured using a pultrusion method in which a tractor device is used to provide linear movement of the profile from the extrusion head to the exterior coating operation. The fiber-reinforced thermoset is coated on the entirety of the exterior of the profile or is applied only on a portion of the profile requiring reinforcement in a defined load-bearing direction. A preferred thermoplastic core comprises a polymer-fiber composite material. A structural member of the invention has significantly improved Young's modulus providing strength for applications such as telephone poles, electric poles, electric lighting poles, boat mast or keel applications, lumber replacements, structural members used in window and door manufacture, etc.

A device for filtering emboli from blood flowing through a lumen defined by the walls of a vessel in a patient's body. The filter element is expandable from a collapsed configuration when the filter element is restrained to an expanded configuration when the filter element is unrestrained. The filter element includes a mesh including strands, each strand having a diameter. The mesh includes at least one radiopaque strand and at least one non-radiopaque strand, and wherein each strand has an index of wire stiffness EI, where EI is the mathematical product of the Young's modulus (E) and the second moment of area (I), and wherein the largest EI of a strand is no more than five times the smallest EI of a strand.

An intraocular accommodating lens comprising a resilient polymer monolith with a peripheral component that has a Young's modulus and an equilibrium memory shape that imparts to the capsular sac's periphery the natural shape of the capsule in an accommodated state. The intraocular lens includes a central deformable optic that provides accommodated and disaccommodated shapes. The peripheral component is deformable to a disequilibrium, stressed shape in responsive to equatorial tensioning-and is capable of applying restorative forces to move the lens toward the accommodated shape from a disequilibrium disaccommodated shape. In one embodiment, the central optic portion includes a displaceable media than can be displaced by very low forces of zonular excursion, wherein the displaceable media can comprise a very low modulus polymer or an index-matched fluid.

A composition in the form of pellets comprising a thermoplastic and wood fiber composite material suitable for forming structural members as a replacement for wood in the manufacture of doors and windows. The composite has less than about 10 wt % water based on pellet weight and a Young's modulus of at least about 500,000. Structural members are typically formed from the composite in an extrusion or an injection molding process.

A method of manufacturing a thermally actuated ink jet printhead includes the step of initially providing a wafer having a circuitry layer including the electrical circuitry necessary for the operation of a thermal actuator. A first sacrificial layer is deposited on the wafer and is etched. A Young's modulus layer is deposited to form a first layer of a thermal actuator and a portion of a nozzle chamber wall. A conductive heater material layer is provided and has a portion interconnected to the circuitry layer. A second sacrificial layer is deposited and etched in preparation for nozzle chamber walls. A nozzle wall material layer is deposited to form the walls of the nozzle chamber. The nozzle wall material layer is etched to define a nozzle port for the ejection of ink. The sacrificial layers are etched away to release the thermal actuator. The nozzle chamber walls are formed to define a fulcrum for the thermal actuator.

The present invention relates to structures and components for protecting organic light emitting diodes from environmental elements such as moisture and oxygen. According to a first aspect of the invention, top-emitting, high-resolution, OLED structures are provided which include a metal foil substrate; a planarization layer disposed over the metal foil substrate; an OLED stack (which includes lower and upper electrodes as well as an organic region disposed between the electrodes) disposed over the planarization layer; and a multilayer barrier region disposed over the OLED stack. A second aspect of the invention is directed to flexible, top emitting OLED structures which include the following: thin substrate region (i.e., a substrate having a thickness that is less than 200 microns); an OLED stack disposed over the flexible substrate region; a transparent upper barrier region that cooperates with the flexible substrate region to encapsulate the OLED stack, thereby protecting it from outside species such as water or oxygen; and a polymeric reinforcement layer which has a Young's Modulus ranging from about 0.3 to 7 GPa, which is disposed (i) below the substrate region, (ii) above the upper barrier region (in which case it is transparent), or (iii) both below the substrate region and above the upper barrier region.

The invention provides an unconventional oil and gas reservoir horizontal well section full-fracture-length fracturing parameter analog method and device. The method includes the steps of determining an unconventional oil and gas reservoir horizontal well section object region; obtaining three-dimensional earthquake prestack gathered data in the object region, conducting elastic parametric inversion and obtaining a three-dimensional space elastic parameter data body, wherein the three-dimensional space elastic parameter data body comprises a rock mass poisson ratio and Young modulus; calculating a rock mass brittleness index according to the rock mass poisson ratio and the Young modulus; establishing a rock mass mechanical parameter model based on three-dimensional grid nodes according to the three-dimensional space elastic parameter data body and the rock mass brittleness index; calculating stress information on the three-dimensional grid nodes, and generating a three-dimensional stress field distribution model; conducting full- fracture-length three-dimensional numerical simulation of fractures in the fracturing process according to the rock mass mechanical parameter model and the three-dimensional stress field distribution model. The unconventional oil and gas reservoir horizontal well section full-length-fracture fracturing parameter analog method and device can improve effectiveness and accuracy of unconventional oil and gas reservoir horizontal well section full-fracture-length fracturing parameter analog, and improve the reserve utilization degree of a reservoir stratum.

A non-intumescent mat for providing a support structure for low temperature fragile structures in exhaust gas treatment devices, such as catalytic converters, diesel particulate traps, and like, comprising amorphous inorganic fibers. The fibers have Young's Modulus of less than about 20×106 psi and a geometric mean diameter less than about 5 μm. The mat is adapted to provide a holding force of at least 15 psi throughout an average mat temperature range from ambient temperature up to at least about 350° C. The amorphous inorganic fibers are preferably melt formed fibers comprising the fiberization product of a melt comprising alumina / silica.

A honeycomb structure includes a ceramic block and a sealing material layer. The ceramic block includes a plurality of honeycomb fired bodies each having a large number of cells longitudinally disposed substantially in parallel with one another with a cell wall between the cells, an adhesive layer for bonding side faces of the honeycomb fired bodies, and a cavity-holding member placed between the side faces of the honeycomb fired bodies. The sealing material layer is formed on a peripheral face of the ceramic block. The cavity-holding member includes a nonflammable material having Young's modulus of at least about 0.001 GPa and at most about 0.07 GPa.

The present invention has for its object to inhibit decrease in Young's modulus at high temperature without compromise in various other characteristics such as heat conductivity.The present invention is directed to a ceramic board for semiconductor manufacture and inspection comprising a conductor layer internally or on the surface thereof which is composed of nitride ceramics containing oxygen and 0.1 to 50 ppm (wt.) of Si.

A microphone sensing element and a method for making the same are disclosed. The sensing element has a diaphragm and an attached electrical lead-out arm preferably made of polysilicon that are separated by an air gap from an underlying backplate region created on a conductive silicon substrate. The backplate region has acoustic holes created by removing an oxide filling in a continuous trench that surrounds hole edges and by removing oxide to form the air gap. The diaphragm is softly constrained along its edge by an elastic element that connects to a surrounding rigid polysilicon layer. The elastic element is typically a polymer such as parylene having a Young's modulus substantially less than that of the diaphragm. First and second electrodes are connected to the diaphragm through the lead-out arm and to the substrate through polysilicon via fillings, respectively, and thereby establish a variable capacitor circuit for acoustic sensing.

A nonvolatile magnetic memory device having a magnetoresistance-effect element includes: (A) a laminated structure having a recording layer in which an axis of easy magnetization is oriented in a perpendicular direction; (B) a first wiring line electrically connected to a lower part of the laminated structure; and (C) a second wiring line electrically connected to an upper part of the laminated structure, wherein a high Young's modulus region having a Young's modulus of a higher value than that of a Young's modulus of a material forming the recording layer is provided close to a side surface of the laminated structure.

A bond pad structure for an integrated circuit chip has a stress-buffering layer between a top interconnection level metal layer and a bond pad layer to prevent damages to the bond pad structure from wafer probing and packaging impacts. The stress-buffering layer is a conductive material having a property selected from the group consisting of Young's modulus, hardness, strength and toughness greater than the top interconnection level metal layer or the bond pad layer. For improving adhesion and bonding strength, the lower portion of the stress-buffering layer may be modified as various forms of a ring, a mesh or interlocking-grid structures embedded in a passivation layer, alternatively, the stress-buffering layer may has openings filled with the bond pad layer.

A computational model which integrates a complex circulatory model and a finite element to determine the dynamics of a left ventricle continuously over consecutive cardiac cycles. The model includes determining a LV pressure (plv) using a circulatory model, using a finite element model plv as input and determining a LV volume (vlv), computing a LV elastance according to: elv=plv / vlv, driving the circulatory model with the elv; and returning to determining a LV pressure and starting the next iteration, wherein the steps continue at a sufficient time resolution for a desired number of entire cardiac cycles. The dynamic Young's modulus functions are assigned to individual finite elements, resulting in a time-varying left ventricular elastance that drives the circulatory model.

MEMS resonators containing a first material and a second material to tailor the resonator's temperature coefficient of frequency (TCF). The first material has a different Young's modulus temperature coefficient than the second material. In one embodiment, the first material has a negative Young's modulus temperature coefficient and the second material has a positive Young's modulus temperature coefficient. In one such embodiment, the first material is a semiconductor and the second material is a dielectric. In a further embodiment, the quantity and location of the second material in the resonator is tailored to meet the resonator TCF specifications for a particular application. In an embodiment, the second material is isolated to a region of the resonator proximate to a point of maximum stress within the resonator. In a particular embodiment, the resonator includes a first material with a trench containing the second material. In a specific embodiment, the shape, dimensions, location and arrangement of a second material comprising silicon dioxide is tailored so that the resonator comprising a first material of SiGe will have a TCF of a much lower magnitude than that of either a homogeneous SiGe or homogeneous silicon dioxide resonator.

A method for producing a substantially calibrated numerical model, which can be used for calculating a stress on any point in a formation, accounts for a formation's geologic history using at least one virtual formation condition to effectively “create” the present-day, virgin stress distribution that correlates, within acceptable deviation limits, to actual field stress measurement data obtained for the formation. A virtual formation condition may describe an elastic rock property (e.g., Poisson ratio, Young's modulus), a plastic rock property (e.g., friction angle, cohesion) and / or a geologic process (e.g., tectonics, erosion) considered pertinent to developing a stratigraphic model suitable for performing the desired stress analysis of the formation.

A piezoelectric vibrator having excellent shock resistance and high reliability is offered. The centers of first and second piezoelectric vibrating plates are supported by pillars on a main surface of an enclosure and nearly or substantially parallel to the main surface of the enclosure. Spacers having a Young's modulus of less than 2 GPa are mounted on both end sides of the second piezoelectric vibrating plate to prevent contact between the vibrating plates, thus preventing damage. Other spacers are mounted on the main surface of the enclosure in positions corresponding to the first-mentioned spacers to prevent contact with the main surface of the enclosure, thus preventing damage to the second piezoelectric vibrating plate.