Abstract: A method of fabricating a multi-color display includes dispensing a photo-curable fluid over a display having an array of LEDs disposed below a cover layer. The cover has an outer surface with a plurality of recesses, and the photo-curable fluid fills the recesses. The photo-curable fluid includes a color conversion agent. A plurality of LEDs in the array are activated to illuminate and cure the photo-curable fluid to form a color conversion layer in the recesses over the activated LEDs. This layer will convert light from these LEDs to light of a first color. An uncured remainder of the photo-curable fluid is removed. Then the process is repeated with a different photo-curable fluid having a different color conversion agent and a different plurality of LEDs. This forms a second color conversion layer in different plurality of recesses to convert light from these LEDs to light of a second color.

Abstract: A photocurable composition includes a nanomaterial selected to emit radiation in a first wavelength band in the visible light range in response to absorption of radiation in a second wavelength band in the UV or visible light range. The second wavelength band is different than the first wavelength band. The photocurable composition further includes one or more (meth)acrylate monomers, a thiol crosslinker, and a photoinitiator that initiates polymerization of the one or more (meth)acrylate monomers in response to absorption of radiation in the second wavelength band.

Abstract: The disclosure provides a method and a system for predicting disinfection by-products in drinking water. The method includes: acquiring water age prediction data of the drinking water to be predicted and water quality data of the drinking water to be predicted; inputting the water age prediction data and the water quality data into an adaptive genetic BP neural network model for predicting the disinfection by-products in the drinking water to obtain prediction values of the disinfection by-products in the drinking water. The disinfection by-products in a water supply pipe network can be predicted efficiently and economically by using the method and the system for predicting the disinfection by-products in the drinking water provided by the disclosure.

Abstract: An implementation described herein provides a binder ink mixture for 3D printing of ceramic parts in a binder jet process. The binder ink mixture includes a molecular space filler and a free radical initiator.

Abstract: Methods and systems for additive manufacturing can include a modular spreader unit including multiple spreaders that collectively span the width of a large build area. The spreaders can be arranged in offset rows so that spreaders in a second row cover gaps between spreaders in a first row. The spreaders can be secured with quick release mechanisms for rapid replacement and adjustment during service intervals.

Abstract: A multi-color display includes a backplane having backplane circuitry, an array of micro-LEDs electrically integrated with backplane circuitry of the backplane, a first color conversion layer over each of a first plurality of light emitting diodes, a second color conversion layer over each of a second plurality of light emitting diodes, and a plurality of isolation walls separating adjacent micro-LEDs of the array. The micro-LEDs of the array are configured to generate illumination of the same wavelength range, the first color conversion layer converts the illumination to light of a first color, and the second color conversion layer converts the illumination to light of a different second color.

Abstract: An additive manufacturing apparatus has a platform, one or more supports positioned above the platform, an actuator coupled to at least one of the platform and the one or more supports and configured to create relative motion therebetween such that the one or more supports scan across the platform, a first dispenser system configured dispense a plurality of successive layers of powder onto a build area supported by the platform, a second dispenser system configured to dispense a binder material onto the build area, and an energy source configured to emit radiation toward the platform so as to solidify the binder material. The first dispenser system includes a first powder dispenser that is attached to and moves with a first support from the one or more supports and is configured to selectively dispense a first powder onto the build area.

Abstract: A method of fabricating a multi-color display includes dispensing a photo-curable fluid that includes a color conversion agent over a display having a backplane and an array of light emitting diodes electrically integrated with backplane circuitry of the backplane, activating a plurality of light emitting diodes in the array of light emitting diodes to illuminate and cure the first photo-curable fluid to form a color conversion layer over each of the first plurality of light emitting diodes to convert light from the plurality of light emitting diodes to light of a first color, and removing an uncured remainder of the first photo-curable fluid. This process is repeated with a fluid having different color conversion components for another color.

Abstract: An additive manufacturing apparatus includes a platform, one or more supports positioned above the platform, an actuator, a first dispenser system configured dispense a plurality of successive layers of powder onto a build area supported by the platform, a first binder material dispenser configured to selectively dispense a first binder material on a voxel-by-voxel basis to an uppermost layer of powder in the build area, and an energy source configured to emit radiation toward the platform so as to solidify the binder material. The first dispenser system includes a first powder dispenser that is attached to and moves with a first support from the one or more supports and is configured to selectively dispense a first powder onto the build area, and a second powder dispenser that is configured to selectively dispense the second powder onto the build area.

Abstract: A formulation, system, and method for additive manufacturing of a polishing pad. The formulation includes monomer, dispersant, and nanoparticles. A method of preparing the formulation includes adding a dispersant that is a polyester derivative to monomer, adding metal-oxide nanoparticles to the monomer, and subjecting the monomer having the nanoparticles and dispersant to sonication to disperse the nanoparticles in the monomer.

Abstract: A method for printing on a substrate includes printing a support structure by printing a liquid precursor material and curing the liquid precursor material, printing one or more alignment markers by printing the liquid precursor material outside the support structure and curing the liquid precursor material, positioning a substrate within the support structure, performing a registration of the substrate using the one or more alignment markers, and printing one or more device structures on the substrate while registered by printing and curing the liquid precursor material.

Abstract: A method for printing on a substrate includes printing a support structure by printing a liquid precursor material and curing the liquid precursor material, positioning a substrate within the support structure, printing one or more anchors on the substrate and the support structure by printing and curing the liquid precursor material to secure the substrate to the support structure, and printing one or more device structures on the substrate while anchored by printing and curing the liquid precursor material.

Abstract: A method of printing structures on a reconstructed wafer includes positioning a plurality of semiconductor dies on a support substrate, anchoring the plurality of semiconductor dies to the support substrate by printing a plurality of anchors that extend across edges of the semiconductor dies onto the support substrate and thus form a reconstructed wafer, and printing one or more device structures on the pluralities of semiconductor dies while anchored on the support substrate. The printing operations include ejecting droplets of a liquid precursor material and curing the liquid precursor material.

Abstract: A photocurable composition includes a nanomaterial selected to emit radiation in a first wavelength band in the visible light range in response to absorption of radiation in a second wavelength band in the UV or visible light range, one or more (meth)acrylate monomers, and a photoinitiator that initiates polymerization of the one or more (meth)acrylate monomers in response to absorption of radiation in the second wavelength band. The second wavelength band is different than the first wavelength band. A light-emitting device includes a plurality of light-emitting diodes and the cured photocurable composition in contact with a surface through which radiation in a first wavelength band in the UV or visible light range is emitted from each of the light-emitting diodes.

Abstract: A method of fabricating a multi-color display includes dispensing a photo-curable fluid over a display having an array of LEDs disposed below a cover layer. The cover has an outer surface with a plurality of recesses, and the photo-curable fluid fills the recesses. The photo-curable fluid includes a color conversion agent. A plurality of LEDs in the array are activated to illuminate and cure the photo-curable fluid to form a color conversion layer in the recesses over the activated LEDs. This layer will convert light from these LEDs to light of a first color. An uncured remainder of the photo-curable fluid is removed. Then the process is repeated with a different photo-curable fluid having a different color conversion agent and a different plurality of LEDs. This forms a second color conversion layer in different plurality of recesses to convert light from these LEDs to light of a second color.

Abstract: A method of fabricating a multi-color display includes dispensing a photo-curable fluid that includes a color conversion agent over a display having a backplane and an array of light emitting diodes electrically integrated with backplane circuitry of the backplane, activating a plurality of light emitting diodes in the array of light emitting diodes to illuminate and cure the first photo-curable fluid to form a color conversion layer over each of the first plurality of light emitting diodes to convert light from the plurality of light emitting diodes to light of a first color, and removing an uncured remainder of the first photo-curable fluid. This process is repeated with a fluid having different color conversion components for another color.

Abstract: An additive manufacturing apparatus includes a platform, one or more supports positioned above the platform, an actuator, a first powder dispenser that is attached to and moves with a first support from the one or more supports and is configured to selectively dispense a first powder onto the build area, a first binder material dispenser configured to selectively dispense a first binder material on a voxel-by-voxel basis to an uppermost layer of powder in the build area to form a volume of the layer having powder and binder material and corresponding to a cross-sectional portion of a part being built, a third dispensing system configured to deliver a densification material to the layer of powder or the combined layer of powder and binder material, and an energy source configured to emit radiation toward the platform so as to solidify the binder material.

Abstract: A method of fabricating an object by additive manufacturing includes forming a green part by successively forming a plurality of layers of the green part, and processing the green part to fuse the powder into a solid mass. For each layer of the green part, a layer of powder is dispensed onto a build area on a platform, wherein the selective dispensing covers less than all of the build area, a binder material is selectively dispensed onto the layer of powder to form a combined layer of powder and binder material, and radiation is directed toward the platform so as to solidify the binder material to form a layer of the plurality of layers of the green part in which the powder is held by the solidified binder material.

Abstract: An additive manufacturing apparatus has a platform, one or more supports positioned above the platform, an actuator coupled to at least one of the platform and the one or more supports and configured to create relative motion therebetween such that the one or more supports scan across the platform, a first dispenser system configured dispense a plurality of successive layers of powder onto a build area supported by the platform, a second dispenser system configured to dispense a binder material onto the build area, and an energy source configured to emit radiation toward the platform so as to solidify the binder material. The first dispenser system includes a first powder dispenser that is attached to and moves with a first support from the one or more supports and is configured to selectively dispense a first powder onto the build area.

Abstract: An additive manufacturing apparatus includes a platform, one or more supports positioned above the platform, an actuator, a first powder dispenser that is attached to and moves with a first support from the one or more supports and is configured to selectively dispense a first powder onto the build area, a first binder material dispenser configured to selectively dispense a first binder material on a voxel-by-voxel basis to an uppermost layer of powder in the build area to form a volume of the layer having powder and binder material and corresponding to a cross-sectional portion of a part being built, a third dispensing system configured to deliver a densification material to the layer of powder or the combined layer of powder and binder material, and an energy source configured to emit radiation toward the platform so as to solidify the binder material.