3220 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.

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.

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 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.

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.

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 shock absorbing device for a shoe sole according to the present invention comprises: an outer sole 2; a midsole M that is disposed above the outer sole 2; and a deformation element 3 disposed between the outer sole 2 and the midsole M. The deformation element 3 is joined to the bottom surface of the midsole M and is joined to the upper surface of the outer sole 2. The deformation element has a tubular part 30 in a flat tubular form, and Young's modulus of a material constituting the tubular part 30 is greater than both that of a material constituting the midsole M and that of a material constituting the outer sole 2. The tubular part has a lower portion that is curved so as to be convex downwards and thereby undergoes bending deformation due to a shock at landing.

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 (p_lv) using a circulatory model, using a finite element model p_lv as input and determining a LV volume (v_lv), computing a LV elastance according to: e_lv=p_lv/v_lv, driving the circulatory model with the e_lv; 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.