3130 results about "Material structure" patented technology

On-chip multispectral imaging and data management is provided in the form of an Adaptive Focal Plane Array (AFPA) that is capable of spectral tunability at the pixel level. Layers of photonic crystals are registered with pixels of a broadband focal plane array. Spectral tuning is accomplished by switching the photonic crystal layers on/off and/or by changing their material structure to tune their photonic band gaps and provide a passband for incident photons. The photonic crystal layers are preferably segmented to independently address different regions or “cells” of pixels down to a pixel-by-pixel resolution. The AFPA may simultaneously sense different regions of a scene at different spectral wavelengths, spatial resolutions and sensitivities.

A method and apparatus for embedding features and controlling material composition in a three-dimensional structure (130) is disclosed. The invention enables the control of material characteristics, within a structure (130) made from a plurality of materials, directly from computer renderings of solid models of the components. The method uses stereolithography and solid model computer file formats to control a multi-axis head (480) in a directed material deposition process (123). Material feedstock (126, 127) is deposited onto a pre-heated substrate (19). Depositions (15) in a layer-by-layer pattern, defined by solid models (141, 146), create a three-dimensional article having complex geometric details. Thermal management of finished solid articles (250-302), not available through conventional processing techniques, is enabled by embedded voids (152) and/or composite materials (126, 127), which include dissimilar metals (210, 216). Finished articles control pressure drop and produce uniform coolant flow and pressure characteristics. High-efficiency heat transfer is engineered within a solid structure by incorporating other solid materials with diverse indexes. Embedding multi-material structures (132, 134) within a normally solid component (141) produces articles with diverse mechanical properties. Laser and powder delivery systems (420, 170) are integrated in a multi-axis deposition head (480) having a focused particle beam (502) to reduce material waste.

This invention teaches a multi-sensor quality inference system for additive manufacturing. This invention still further teaches a quality system that is capable of discerning and addressing three quality issues: i) process anomalies, or extreme unpredictable events uncorrelated to process inputs; ii) process variations, or difference between desired process parameters and actual operating conditions; and iii) material structure and properties, or the quality of the resultant material created by the Additive Manufacturing process. This invention further teaches experimental observations of the Additive Manufacturing process made only in a Lagrangian frame of reference. This invention even further teaches the use of the gathered sensor data to evaluate and control additive manufacturing operations in real time.

The invention provides a porous silicon carbon composite microsphere with a yolk-eggshell structure and a preparation method therefor, and belongs to the lithium ion battery electrode material technology field. The porous silicon carbon composite microsphere takes a porous submicron silicon sphere mpSi as a core with a diameter of 400-900 nm, and takes porous carbon mpC as a shell with a thickness of 10-60 nm. The inner diameter of a cavity Void is 800-1400 nm. The composition of the silicon carbon composite microsphere can be described as mpSi@Void@mpC. In addition, In the preparation method, cheap silicon dioxide is taken as a silicon source, silicon dioxide is conversed into silicon materials with electrochemical activities through a magnesiothermic reduction method. The size of gaps can be regulated and controlled through control of etching conditions. The preparation method is advantaged in that the material structure can be controlled, the cost is low, the process is simple, and the composite microsphere is convenient for large-scale production.

A stent is disclosed in several embodiments including the use of a material known as NITINOL forming the ends of the stent as well as support structure connecting the ends. A fabric is interconnected with the NITINOL structure to form the stent. The NITINOL material ends have slits parallel with the direction of elongation of the stent allowing radial expansion of the ends. The pieces interconnecting the ends have a serpentine shape allowing longitudinal expansion of the stent. The NITINOL material structure may be located within the fabric portion or outside the fabric portion. The connecting pieces may be separate structures attached to the fabric. Alternatively, the end pieces may be separate structures attached to the fabric without the connecting pieces.

An apparatus and method for depositing plural layers of materials on a substrate within a single vacuum chamber allows high-throughput deposition of structures such as these for GMR and MRAM application. An indexing mechanism aligns a substrate with each of plural targets according to the sequence of the layers in the structure. Each target deposits material using a static physical-vapor deposition technique. A shutter can be interposed between a target and a substrate to block the deposition process for improved deposition control. The shutter can also preclean a target or the substrate and can also be used for mechanical chopping of the deposition process. In alternative embodiments, plural substrates may be aligned sequentially with plural targets to allow simultaneous deposition of plural structures within the single vacuum chamber. A monitoring and control device can be wed to optimize equipment state, process state, and wafer state parameters by sensing each respective state during or after the deposition process.

A method for real-time optical diagnostics in laser ablation and laser processing of layered or structured materials or material structures. Diagnostics is provided during laser ablation that is utilized regularly in laser processing and/or chemical analysis of structured materials, by means of measuring optical emission generated as a result of the pulsed laser-material interaction in real time. The method can involve a single-layer-film or a stack of multiple layers or a structure of different domains. The method is particularly beneficial in fabrication of thin-film structures, such as photovoltaic and electronic devices or circuits of devices.

A new shape changing staple and instrument for the fixation of structures to include bone tissue and industrial materials. This new staple stores elastic mechanical energy to exert force on fixated structures to enhance their security and in bone affect its healing response. This staple once placed changes shape in response to geometric changes in the materials structure, including healing bone tissue. The staple is advanced over prior staples due to its: 1) method of operation, 2) high strength, 3) method of insertion, 4) compressive force temperature independence, 5) energy storing staple retention and delivery system, 6) compatibility with reusable or single use product configuration, 7) efficient and cost effective manufacturing methods, and 8) reduction in the steps required to place the device. In addition to the staple's industrial application an embodiment for use in the fixation of the musculoskeletal system is shown with staple, cartridge, and extrusion handle.

Gallium nitride material structures, including devices, and methods associated with the same are provided. In some embodiments, the structures include one or more isolation regions which electrically isolate adjacent devices. One aspect of the invention is the discovery that the isolation regions also can significantly reduce the leakage current of devices (e.g., transistors) made from the structures, particularly devices that also include a passivating layer formed on a surface of the gallium nitride material. Lower leakage currents can result in increased power densities and operating voltages, amongst other advantages.

A method of visually quantifying a test material along with an imaging apparatus for practicing the method is disclosed. The method comprises: (a) illuminating the test material at a known angle of incidence with diffuse light of a known and adjustable polarization state; (b) receiving light from the test material with a polarization state modified by the test material; (c) measuring an intensity of the polarization components of the received light for each illuminated pixel substantially simultaneously; (d) calculating the Stokes Vector in two dimensions for each illuminated pixel; and (e) creating an image map for the known polarization state. The method may also include adjusting the known polarization or the incident angle of the diffuse light to create additional image maps. The method and apparatus are intended for use in medical imaging including minimally invasive surgery.

A process for manufacturing electroluminescent lamps using a laser beam to remove a material layer of a multi-layer material structure, in which the laser beam has a first energy level directed at a first material layer, e.g., a conductor, laid over a second material layer, e.g., an insulator/substrate. The laser beam is moved in an overlapping fashion such as spiral pattern motion across the first material layer. A part of the first material layer is sublimed exposing a region of the second material under the area where the spiral pattern was applied. Additionally, a second laser beam having a second energy level, e.g., higher than the first energy level, is moved along a path over the exposed second material layer subliming the remaining underlying layers to form the final lamp shape.

A hybrid active deformable material structure is presented. The hybrid active deformable material structure comprises a deformation unit. Each deformation unit includes a selectively deformable material structure and an actively deformable material structure in cooperation with the selectively deformable material structure. The selectively deformable structure may be caused to deform in response to a deformation of the actively deformable material structure and, when deformed, to retain a shape into which it was deformed. A plurality of deformation activation elements may be positioned about the structure to provide for multi-directional bending-type deformation, stretching-type deformation, and twisting-type deformation. The hybrid active deformable material structure may further comprise a passive material structure in cooperation with the selectively deformable material structure and the actively deformable material structure. The passive material structure may provide mechanical support for at least a portion of the selectively deformable material structure and may enclose the selectively deformable material structure.

One embodiment of the present invention is to provide a stress-stimulated luminescent material which has a unique crystal structure and which emits conventionally unachievable intense light. The stress-stimulated luminescent material of one embodiment of the present invention includes a basic structure in which a plurality of tetrahedral molecules each having an AlO₄-like tetrahedral structure or an SiO₄-like tetrahedral structure share atoms of apexes of the tetrahedral structures so as to be coupled to one another so that a basic material structure is formed and at least either alkali metal ions or alkali earth metal ions are inserted into the void are partially substituted by at least either rare earth metal ions or transition metal ions.

An intervertebral prosthetic device is provided for implanting within an intervertebral disc space between first and second vertebral bodies. The device includes a body component and a core component, one of which is an elastic-material structure and the other of which is a composite structure, including a textile structure embedded within an elastic material. The composite structure has a higher compressive modulus of elasticity than the elastic-material structure to enhance device support when in an operable position within the intervertebral disc space. In various embodiments, a porous textile structure partially covers the body component to, for example, facilitate bony in-growth or soft tissue in-growth into the device and therefore fixation of the device when in operable position within the intervertebral disc space.

The invention relates to the technical field of lithium-ion batteries, in particular to an electrolyte of the lithium-ion battery and the lithium-ion battery containing the electrolyte. The electrolyte comprises a lithium salt, a non-aqueous organic solvent and an additive, wherein the additive comprises a film-forming additive A and a stabilizing additive B; the stabilizing additive B is a chainlike disulfonic acid ester compound as shown in a formula I and/or a formula II; and the film-forming additive A forms an SEI film on a negative electrode surface of the battery and the side reaction of a negative electrode interface and the electrolyte is reduced, so that the film-forming additive A is an necessary precondition that the battery has relatively good cycle performance. The stabilizing additive B can form a CEI film on a positive electrode surface, the activity of a positive electrode interface and the electrolyte is inhibited, direct contact oxidation of a positive electrode and the electrolyte is reduced, meanwhile, the structure stability of a positive electrode material is improved and the structure is not easy to collapse and crush due to generation of the stress, so that the electrolyte has excellent high-temperature storage performance and high-temperature cycle performance through combination of the additive A and the additive B.

There is provided a light emitting device, which comprises compound semiconductor layers including a first conductive semiconductor layer, an active layer and a second conductive semiconductor layer; a metal reflection layer formed on a region of the second conductive semiconductor layer; an insulating structure formed at least in a boundary region of the second conductive semiconductor layer; a metal material structure formed to cover the second conductive semiconductor layer having the metal reflection layer and the insulating structure formed; and a substrate bonded to the metal material structure, wherein the boundary region of the second conductive semiconductor layer includes an outer region of the second conductive semiconductor layer along an outer circumference of the second conductive semiconductor layer.