Abstract: A BLU includes a 2D array of LEDs, wherein a number of rows in the two-dimensional array is less than a number of columns in the two-dimensional array, and at least one LED in the two-dimensional array produces light with an angular distribution of nominally ±90 degrees around a center of the at least one LED. A transparent solid material layer is positioned with a bottom surface over the 2D array of LEDs that is configured to transform the light produced by the 2D array of LEDs into light having an angular distribution of nominally less than ±90 degrees around the center of the at least one LED at a top surface of the transparent solid material layer. A diffuser film is positioned over the top surface of the transparent solid material layer and is configured to provide a FWHM of greater than 60 degrees and configured to diffuse the light produced at the top surface of the transparent solid material layer to produce diffused light at a top surface of the diffuser film.

Abstract: The present invention provides an information processing apparatus including a processing unit configured to perform a process of outputting information indicating a contact state between a mold and a composition on a substrate, wherein the processing unit obtains a plurality of points representing a contour shape of a portion where the mold and the composition on the substrate are in contact with each other while at least one process of a contact process and a mold releasing process is performed, and outputs the information indicating the contact state based on the plurality of points.

Abstract: A method of manufacturing an elevator of a medical device comprises using an additive manufacturing method, forming a pivot portion at a proximal end of the elevator. The pivot portion tapers proximally such that a proximalmost end of the elevator is thinner than more distal portions of the pivot portion. The method further comprises using the additive manufacturing method, forming a body of the elevator that is distal to the pivot portion. The elevator body includes a surface configured to contact an instrument inserted in a working channel of the medical device.

Abstract: A 3D printing apparatus of the bottom-up photo-curing type, including a tank containing a liquid photo-curing material and at least one source of a radiation designed to obtain the photo-curing of the liquid photo-curing material, the bottom of the tank including an elastic membrane of non-stick material and transparent to the radiation of the light source, the tank supported on a support plate, the support plate includes, in the portion below the bottom of the tank, a mobile support element, which is able to move by translating and/or rotating in the plane where it is positioned with one or more perforated or lowered portions. The embodiments also relate to a method of using the apparatus for 3D printing.

Abstract: The present disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of making three-dimensional printed objects. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a chemical functionalization agent. The fusing agent can include water and an electromagnetic radiation absorber. The electromagnetic radiation absorber can absorb radiation energy and convert the radiation energy to heat. The chemical functionalization agent can include water and an amine-containing polymer. The amine-containing polymer can be a branched or unbranched polymer that includes a polymer backbone and multiple pendant side chains. The individual side chains can include —NH2, —NH—, or a combination thereof.

Abstract: An EBM variable-direction formation dynamic slicing method in cooperation with an 840D digital control system includes: creating a vertex array object, adjusting a projection matrix to a slice height, outputting a binary image of a two-dimensional cross-section; obtaining, by means of two-dimensional contour extraction, data of a contour line from the binary image, outputting coordinates of a closed contour, and connecting all adjacent coordinates into a straight line to form a closed curve; when a triangle tolerance is 1, dividing contour data into a straight line part and a curve part by taking a starting point of small straight lines with an angle of 140° therebetween as a dividing point, removing adjacent points, repeated points and internal points of a same straight line, and performing segmentation fitting on curve parts of the slice data, and then performing dynamic slicing through the 840D numerical control system.

Abstract: An LED display screen, comprising: an LED array, consisting of multiple LED light-emitting units and used for emitting a light; an optical diffusion film, provided at a light exit side of the LED array; a matrix shading frame, comprising multiple hollow shading gratings, the hollow shading gratings corresponding one-to-one to the LED light-emitting units; and a substrate, used for supporting the LED array and the matrix shading frame, where the light emitted by the LED light-emitting units, after running through the hollow shading gratings, is diffused to a viewer side via the optical diffusion film, and the LED light-emitting units emit the light towards the hollow shading gratings.

Abstract: In embodiments, a method for additive manufacturing of a metal-incorporated resin object comprises illuminating a curable composition comprising prepolymers, a metal compound, a photoredox catalyst, a polymerization initiator, and optionally, a redox agent, with light having a first wavelength, wherein the metal of the metal compound is characterized by an initial oxidation state, and the illumination induces polymerization reactions between prepolymers to form a first cured region and induces redox reactions to change the initial oxidation state of the metal in the first cured region. The method further comprises inducing polymerization reactions between prepolymers to form a second cured region different from the first cured region without inducing redox reactions in the second cured region. Also provided are the curable compositions, the additive manufacturing systems for carrying out the methods, and the metal-incorporated resin objects.

Abstract: A photocurable composition can comprise a polymerizable material, an organic ionic compound and a photoinitiator, wherein an amount of the organic ionic compound may be not greater than 1.5 wt %, the organic ionic compound comprises an organic cation, and a conductivity of the photocurable composition can be at least 20 ?S/cm. The photocurable composition can have an improved drop spreading and merging of drops in comparison to the same composition but not including the organic ionic compound.

Abstract: This disclosure describes hydrogel three-dimensional printing kits, methods of three-dimensional printing hydrogels, and hydrogel three-dimensional printing systems. In one example, a hydrogel three-dimensional printing kit can include a particulate build material, a crosslinking agent, a whitening agent, and a coloring agent. The particulate build material can include a polyhydroxylated swellable polymer. The crosslinking agent can include water and a crosslinker that is reactive with hydroxyl groups of the polyhydroxylated swellable polymer to crosslink the polyhydroxylated swellable polymer. The whitening agent can include water and a dispersed white pigment. The coloring agent can include water and a colorant.

Abstract: A 3D printing apparatus includes a substrate stage configured to support a substrate, a droplet ejector including at least one droplet nozzle configured to discharge a photo-curable droplet on the substrate, a first photo curing unit configured to irradiate light to a drop path along which the droplet discharged from the droplet nozzle falls to change a viscosity of the droplet, and a second photo curing unit configured to irradiate light onto the droplet that has landed on the substrate to cure the droplet.

Abstract: A method of forming a three-dimensional body from a mixture, wherein the mixture can comprise dispersed solid polymeric particles and a curable binder. In a particular embodiment the solid polymeric particles can be fluoropolymeric particles. The method can include at least partial removal of the cured binder and sintering, to obtain a sintered polymeric three-dimensional body. In one embodiment, the sintered three-dimensional body can be PTFE.

Abstract: An improved method and apparatus for adding a new layer to a stack of previously processed layers. In an example, a method is provided for mounting the previously processed layer on a build platform, mounting the new layer on a substrate, aligning the new layer with the previously processed layer, moving the new layer and the previously processed into contact with one another, and applying energy to the new layer from an energy source through the substrate to simultaneously process the new layer and bond the new layer to the previously processed layer to form a bonded processed multilayer stack on the build platform. A flexible compliant pressure conveyance media is moved into contact with the substrate to apply pressure to the new layer while the energy is being applied.

Abstract: Various embodiments disclosed relate to novel methods of fabricating 3-D Li ion batteries using direct nanoimprint lithography. The present invention includes methods of fabricating high surface area electrodes, including imprint patterning of high aspect ratio parallel grating style electrodes. The method includes coating a substrate with an ink containing nanoparticles and subsequently annealing the ink into a desired pattern.

Abstract: A self-expandable stent has sufficient radial force, has good bending properties, and recovers the shape for the diameter thereof to return from a diameter in a contracted state to a diameter before contraction around a body temperature (37° C.). The self-expandable stent includes a crosslinked polymer containing a constitutional unit (A) obtained from a monomer that constitutes a rigid biodegradable polymer when homopolymerized and a constitutional unit (B) obtained from a crosslinking agent, in which a content of the constitutional unit (B) is 15% by weight to 35% by weight with respect to a content of the constitutional unit (A).

Abstract: The present disclosure provides methods for freeform extrusion-based additive manufacturing via a robotic arm. In specific aspects, methods are particularly provided for minimally invasive, intracorporeal three-dimensional printing of biocompatible materials. An end effector of a robotic arm includes a sharp member and a reservoir filled with a printing material. The provided method may include piercing a substrate with the sharp member. A bulb or micro-bolus of material may be extruded beneath the substrate surface to act as an anchor. The end effector may be manipulated to extrude biomaterial along a printing path. Periodically along the printing path, the sharp member is used to pierce the substrate surface create additional respective anchors. In some instances, the method may terminate after extruding material to form a single layer construct. In other instances, the method includes forming one or more layers on top of the initial base layer anchored to the substrate.

Abstract: Apparatus to produce a three-dimensional object and methods of producing a three-dimensional object are described. In some examples, a first fluid comprising a colorant and a second fluid comprising an absorber to absorb electromagnetic radiation are applied on a layer of particulate material. Application of the second fluid to the layer of particulate material is in dependence on an ability of the first fluid to absorb the electromagnetic radiation.

Abstract: A matrix for the cultivation of biological cells and differentiation into neuronal cells consists of a polymer base body having a structured surface with a microstructure and a nanostructure embedded therein.

Abstract: Methods of printing a three-dimensional object using co-reactive components are disclosed. Thermosetting compositions for three-dimensional printing are also disclosed.

Abstract: A flattening apparatus includes a mold holding unit configured to suck and hold a mold including a flat portion, a substrate holding unit holding a substrate, an exposure unit irradiating a light curing composition supplied onto the substrate with light at least via the mold to cure the composition, the composition being irradiated with the light and cured in a state where the flat portion of the mold is in contact with the composition on the substrate, a gas suction unit sucking gas from a spatial region between the mold and the mold holding unit, a gas supply unit supplying the gas to the spatial region, and a control unit controlling the gas suction unit and the gas supply unit to perform temperature adjustment processing for supplying the gas to the spatial region in a state where the mold is sucked and held onto the mold holding unit.

Abstract: Provided is a kit including a curable composition for imprinting which contains a polymerizable compound having an aromatic ring and a composition for forming an underlayer film for imprinting which contains a polymer and a solvent, in which the polymer contains at least one kind of specific constitutional unit and has a polymerizable group, a film formed of the composition for forming an underlayer film for imprinting is a solid film at 23° C., and a portion that has a continuous partial structure containing an aromatic ring which is included in the polymerizable compound and accounts for 60% by mass or more of the polymerizable compound is common to a continuous partial structure containing an aromatic ring which is included in a substituent R in a side chain in the polymer.

Abstract: An apparatus includes a wall that defines a shaft, a powder platform configured to support a powder bed within the shaft and configured to move through the shaft, and a sealing device that is in a compressed state from an outer perimeter of the sealing device to an inner perimeter of the sealing device such that the outer perimeter contacts the wall and the inner perimeter contacts the powder platform to form a seal between the powder platform and the wall. Another apparatus includes a wall that defines a shaft, a powder platform configured to support a powder bed within the shaft and configured to move through the shaft, and a sealing device comprising a non-fibrous material that is affixed to the powder platform and extends away from the powder platform, the sealing device contacting the wall to form a seal between the powder platform and the wall.

Abstract: A method of additive manufacturing of a three-dimensional object includes sequentially dispensing and solidifying a plurality of layers. The plurality of layers may be formed with a plurality of different colored model materials, a flexible material arranged in a configured pattern to form a sacrificial structure at least partially encompassing the object, and a soft material. The soft material is arranged in a configured pattern to provide separation between the model material and the sacrificial structure. The plurality of different colored model materials is arranged in a configured pattern corresponding to the shape and color definition of the object.

Abstract: A 3D printing kit can include a powder bed material comprising from about 80 wt % to 100 wt % polymer particles, a fusing agent to selectively apply to the powder bed material, and a hardener to selectively apply to the powder bed material. The polymeric particles can include a polyalkylene backbone with both ethylene and propylene polymerized monomeric units with from 2 mol % to 15 mol % of the polymerized monomeric units include a grafted side chain having an epoxide moiety. The fusing agent can include water and a radiation absorber that absorbs electromagnetic energy and converts the electromagnetic energy to heat. The hardener can be present in the fusing agent or can be included in a hardening agent that is separate from the fusing agent.

Abstract: A printing method employs a piece of equipment comprising an energy-delivering exciter that is orientable to produce a punctiform interaction with at least one ink that possibly contains non-uniformities and that is deposited on a printing medium including a transparent interaction area, in order to cause the transfer of a targeted portion of the ink to a receiver. The method includes a step of generating a wetting film at least partially covering the transparent interaction area, followed by a step of depositing the ink on the surface of the wetting film and transferring steps.

Abstract: Disclosed herein is a nanoimprint lithography (NIL) soft mold precursor material comprising a curable fluorinated base resin component, one or more additives, one or more crosslinkers, and one or more of a photo radical generator, a photo acid generator, or both. According to certain embodiments, further disclosed herein are a polymeric material comprising a partially or totally polymerized or crosslinked NIL precursor material, a NIL soft mold comprising the polymeric material, a process for making the NIL soft mold, and a method of using the NIL soft mold to form a NIL grating.

Abstract: A robotic system and method are provided for transfer of fluid between a container accessible via a container-septum and a fluid transfer assembly accessible via a fluid transfer connector septum. The robotic system includes a controller and a manipulator controllable by the controller to manipulate at least one of the container and the fluid transfer assembly. The controller is configured to operate the manipulator to secure contact between the container-septum and the fluid transfer connector septum during at least a portion of the transfer of the fluid.

Abstract: The present disclosure relates to a fiber-reinforced copper-based brake pad for high-speed railway train, and preparation and friction braking performance thereof. The fiber-reinforced copper-based brake pad for high-speed railway train comprises 80-98.5 wt. % metal powder, 1-15 wt. % non-metal powder and 0.5-5 wt. % fiber component. In addition, some components are added in a specific proportion to achieve optimal performance. The copper-based powder metallurgy brake pad is obtained by powder mixing, cold-pressing and sintering with constant pressure. The friction braking performance of the obtained brake pad is tested according to a braking procedure consisting of three stages, i.e., the first stage with low-pressure and low-speed, the second stage with high-pressure high-speed and the continuous emergency braking third stage with high-pressure and high-speed.

Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition, an epoxy agent to be applied to at least a portion of the build material composition during 3D printing, and a fusing agent to be applied to the at least the portion of the build material composition during 3D printing. The build material composition includes a polyamide having an amino functional group. The epoxy agent includes an epoxy having an epoxide functional group to react with the amino functional group of the polyamide in the at least the portion. The fusing agent includes an energy absorber.

Abstract: In examples, a chip scale package (CSP) comprises a semiconductor die; a conductive terminal coupled to the semiconductor die; and a non-conductive coat covering a backside of the semiconductor die and a sidewall of the semiconductor die. The non-conductive coat has a thickness of less than 45 microns.

Abstract: Photolatent olefin metathesis catalysts can be used in combination with metathesis-active monomers or resins for photopolymerization-based additive manufacturing via ring-opening metathesis polymerization (ROMP). A variety of alternative catalysts and photosensitizers are commercially available that allows for tuning of thermomechanical properties, potlifes, activation rates, and irradiation wavelengths. As an example, two optimized catalyst/photosensitizer systems were demonstrated in the rapid stereolithographic printing of complex, multidimensional poly-dicyclopentadiene structures with microscale features under ambient conditions.

Abstract: A method of additive manufacturing a part via vat photopolymerization (VPP) includes irradiating a first material through a first transparent wall of a first material tank and forming a first section of an nth layer of the part on a platform, positioning the platform with the first section of the nth layer in a second material tank with a distance between the first section of the nth layer and a second transparent wall, and irradiating a second material such that a second section of the nth layer of the part is formed on the platform adjacent to the first section of the nth layer. The method repeats forming first and second sections of additional layer until a predetermined number of total layers are formed. Positioning the first and second sections with a distance between the second and first transparent walls, respectively, inhibits crashing during forming of the part.

Abstract: A device for fabricating a solid freeform object includes a stage that rotates, a discharging device disposed over the stage and includes a discharging head each having one or more nozzles, the discharging head for discharging a curing composition to the stage and an exposing device disposed over the stage that exposes the stage to active energy, wherein the distance between the stage and the discharging device is variable and the distance between the stage and the exposing device is variable, wherein the shorter direction of the discharging head is perpendicular to the direction from the center of rotation of the stage toward the peripheral of the stage, wherein the number of the nozzles along the shorter direction increases in the direction from the center of rotation of the stage toward the peripheral of the stage.

Abstract: In an example method for forming three-dimensional (3D) printed electronic parts, a build material is applied. An electronic agent is selectively applied in a plurality of passes on a portion of the build material. A fusing agent is also selectively applied on the portion of the build material. The build material is exposed to radiation in a plurality of heating events. During at least one of the plurality of heating events, the portion of the build material in contact with the fusing agent fuses to form a region of a layer. The region of the layer exhibits an electronic property. An order of the plurality of passes, the selective application of the fusing agent, and the plurality of heating events is controlled to control a mechanical property of the layer and the electronic property of the region.

Abstract: A method for fabricating patterns. An inverse optimization scheme is implemented to determine process parameters used to obtain a desired film thickness of a liquid resist formulation, where the liquid resist formulation includes a solvent and one or more non-solvent components. A substrate is covered with a substantially continuous film of the liquid resist formulation using one or more of the following techniques: dispensing discrete drops of a diluted monomer on the substrate using an inkjet and allowing the dispensed drops to spontaneously spread and merge, slot die coating and spin-coating. The liquid resist formulation is diluted in the solvent. The solvent is then substantially evaporated from the liquid resist formulation forming a film. A gap between a template and the substrate is then closed. The film is cured to polymerize the film and the substrate is separated from the template leaving the polymerized film on the substrate.

Abstract: Described is a system for reducing waste during 3D printing, which includes a printing component configured to print a plurality of layers. Each of the plurality of layers comprises at least one of a first curable material and a second curable material. The system also includes a leveling component configured to remove excess material from each of the plurality of layers after each layer is printed. The system includes a first recirculation loop configured to return the excess material that includes only the first curable material back to the printing component, and a second recirculation loop configured to return the excess material that includes only the second curable material back to the printing component. In addition, the system includes a waste bin configured to receive the excess material that includes both the first curable material and the second curable material.

Abstract: An additive manufacturing system including a two-dimensional energy patterning system for imaging a powder bed is disclosed. The two-dimensional energy patterning system may be used to control a state of matter of each successive additive layer. Accordingly, the system may be used to alter the chemical bond arrangement of the material forming the various additive layers.

Abstract: Some examples include an additive manufacturing system including a processor and a memory to store instructions. The instructions cause the processor to generate print data from received data related to a three-dimensional build object. The generated print data includes defined print data to dispensing a first agent at a build area of a build material layer, defined print data to selectively dispensing a second agent at a component receiving area within the build area of the build material layer, the second agent to locally reduce a viscosity of the build material at the component receiving area to a viscous state, and defined print data to position a component within the component receiving area at a time of the component receiving area being in a viscous state.

Abstract: A method employs a first polymeric material to deposit first and second pattern layers laterally shifted from each other such that laterally shifted pattern layers form between them an empty volume with a variable cross-section that varies along with the first and second pattern layers. A second polymeric material is cast in the empty volume between the first and second pattern layers to cast a complex-shaped 3D object identical in shape to the empty volume between the first and second pattern layers. Radiation is applied to cure the first and second polymeric materials. The first polymeric material is a water breakable material composition including acrylamide, methacrylamide, acrylate, acrylic acids, and acrylic acid salts, hydroxy(meth)acrylate, carboxy(meth)acrylate, acrylonitrile, carbohydrate monomers, methacrylate and polyfunctional acrylics.

Abstract: A process for obtaining an insulating glazing including first and second glass sheets that are held parallelly spaced apart with a transparent glass spacer adhesively bonded to the periphery of the glass sheets to make a gas-filled interlayer space, includes providing the spacer that is substantially parallelepipedal and including two rough faces opposite one another, and two smooth faces opposite one another, assembling the spacer between the glass sheets so that each rough face of the spacer is positioned close to an edge, and against an inner face of each glass sheet, the interstitial width between the rough faces of the spacer and the inner faces of the glass sheets being less than 0.01 mm, depositing, at the external joint lines between the rough faces and the inner faces, a transparent adhesive, the adhesive moving by capillary action to cover the surface of the rough faces, then curing the adhesive.

Abstract: In one example, a fusing system for an additive manufacturing machine includes a first carriage carrying a layering device and a fusing lamp, and a second carriage carrying a fusing agent dispenser. The first carriage and the second carriage are movable back and forth over the work area along the same line of motion so that the first carriage follows the second carriage in one direction and the second carriage follows the first carriage in the other direction.

Abstract: A light transmissive substrate for transforming a Lambertian light distribution into a batwing light distribution. The light transmissive substrate includes a first surface comprising a plurality of microstructures, and a second surface on a side of the substrate opposite the first surface. The substrate is configured to receive light in a Lambertian distribution from a light source at the first surface and transform the light into a batwing distribution exiting the second surface. The batwing distribution having a peak intensity at about ±30° to about ±60° from X and Y axes, and a minimum intensity at nadir.

Abstract: A lighting assembly with a single edge lit optical configuration produces various asymmetric light distributions which provide targeted control of light output with peak intensity that is non-normal to the light guide output face. The compact form factor of the lighting assembly embodiments having narrow width are particularly well-suited for use in linear lighting applications requiring suspended, surface and recessed installations typically used to illuminate walls, floors and/or ceilings. The lighting assembly can also be selectively configured and oriented during assembly and installation to achieve various lighting distributions. Optical components within the lighting assembly are typically positioned and retained in optical alignment with internal support features of a linear housing.

Abstract: A light fixture with a single edge lit optical assembly produces various light distributions which provide targeted control of light output with peak intensity that is non-normal to the light guide output face. The compact form factor and modular design of the light fixture embodiments having narrow width are particularly well-suited for use in linear lighting applications requiring suspended, surface and recessed installations typically used to illuminate walls, floors and/or ceilings. The light fixture can also be selectively configured and oriented during assembly and installation to achieve various lighting distributions. Optical components within the light fixture are typically positioned and retained in optical alignment with internal support features of a linear housing. The optical assembly typically includes LED board, light guide, and one or more reflective surfaces. Additionally an optically transmitting component further provides a fixture assembler a range of design choices.

Abstract: A photocurable composition is provided. A cured product formed by curing the photocurable composition has reworkability and excellent heat resistance while having flexibility. The photocurable composition includes a telechelic acrylic polymer having an acryloyl group at both ends; a polyfunctional acrylic polymer having acryloyl groups; a monofunctional acrylic monomer; and a fumed silica including at least one of a hydrophilic fumed silica or a fumed silica having a polar group. The photocurable composition has a Martens hardness of 0.07 to 0.75 N/mm2, where the Martens hardness is a hardness after the photocurable composition is cured.

Abstract: Herein disclosed is a method of making an electrochemical reactor comprising a) depositing a composition on a substrate to form a slice; b) drying the slice using a non-contact dryer; c) sintering the slice using electromagnetic radiation (EMR), wherein the electrochemical reactor comprises an anode, a cathode, and an electrolyte between the anode and the cathode. In an embodiment, the electrochemical reactor comprises at least one unit, wherein the unit comprises the anode, the cathode, the electrolyte and an interconnect and wherein the unit has a thickness of no greater than 1 mm. In an embodiment, the anode is no greater than 50 microns in thickness, the cathode is no greater than 50 microns in thickness, and the electrolyte is no greater than 10 microns in thickness.

Abstract: A light fixture with a single edge lit optical assembly produces various light distributions which provide targeted control of light output with peak intensity that is non-normal to the light guide output face. The compact form factor of light fixture embodiments having narrow width are particularly well-suited for use in linear lighting applications requiring suspended, surface and recessed installations typically used to illuminate walls, floors and/or ceilings. The light fixture can also be selectively configured and oriented during assembly and installation to achieve various lighting distributions including asymmetrical and symmetrical with one or more peak intensities. Optical components within the light fixture are typically positioned and retained in optical alignment with internal support features of a linear housing.

Abstract: Certain examples relate to a build material management system to transport build material from a collection to source to one of a plurality of storage tanks. The storage tank is determined by a controller that compares color of the build material measured by a color sensor with predetermined values. The controller routes the build material to the storage tank.

Abstract: A method of forming parts uses a forming tool having a forming surface, and an ultrasonic transducer array on the forming surface.

Abstract: The present invention relates to a composition for 3D printing, a 3D printing method using the same, and a three-dimensional comprising the same, and provides a composition for 3D printing capable of realizing a three-dimensional shape having precision and excellent curing stability.