Abstract: The present disclosure relates to a bio printer to which a biomaterial freeze-hardening method is applied and a freeze-hardening method thereof.

Abstract: A 3D printer for producing consumable products, the 3D printer comprising an apparatus for dispensing a material, the apparatus comprising: a first syringe having a body for containing a material, a nozzle for dispensing the material from the body, and a plunger for controlling a pressure in the body, a plunger mechanism coupled to the plunger, a body mechanism coupled to the body and an actuator arranged to move the plunger mechanism relative to the body mechanism in a first direction to increase a pressure in the syringe body to dispense the material and to move the plunger mechanism relative to the body mechanism in a second direction to reduce the pressure in the syringe body to inhibit the dispensation of the material.

Abstract: An apparatus for producing a three-dimensional multilayer object produces a three-dimensional multilayer object by partially applying energy to a conductive powder and thereby melting or sintering and curing the conductive powder. The apparatus for producing a three-dimensional multilayer object includes: a holding unit holding the conductive powder, and holding the cured three-dimensional multilayer object; an energy application unit applying energy to the conductive powder held by the holding unit; a probe disposed spaced apart from a surface layer portion of the cured three-dimensional multilayer object and detecting a flaw in the surface layer portion; and a probe moving mechanism relatively moving the probe with respect to the surface layer portion. The probe contains an excitation coil generating an eddy current in the surface layer portion, and a detection coil detecting a change in a magnetic field of the surface layer portion.

Abstract: An insert member (100) heated by a heating device (13) is conveyed, by means of a conveyance device (12), into a mold (51). Next, shaping is performed on the insert member (100) inside the mold (51), with the mold (51) being open by a minute distance. A molding material (91) is injected into the mold (51) and pressed while closing the mold (51) which has been open by the minute distance to thereby mold a molded article (80) including the insert member (100).

Abstract: Systems and methods for manufacturing an elongate medical device including various surface features. The system including a heating cartridge, a heating element, a filament handling system, a substrate handling system, a controller, and one or more additional components adapted to form the surface features on the medical device. The heating element melts a filament material within the heating cartridge to form a jacket of the medical device and the one or more additional components engages the outer surface of the jacket to create surface features.

Abstract: A method is disclosed for additively manufacturing a structure. The method may include generating a vector field through a 3D virtual model, and slicing the virtual model into a plurality of layers that are aligned with the vector field. The method may also include generating at least one tool path for at least one of the plurality of layers, and causing an additive manufacturing machine to deposit a material along the at least one tool path.

Abstract: A method for manufacturing a three-dimensional shaped object includes a structure shaping step (step S140) of shaping a structure with a shaping material including a metal powder or a ceramic powder, a support shaping step (step S130) of shaping a support T that supports a structure S with a support material including a resin, and a deresining step (step S210) of deresining the support T supporting the structure S.

Abstract: Material delivery systems as well as systems and methods relating thereto are disclosed. In an embodiment, the material delivery system includes a tank to hold water therein. In addition, the material delivery system includes a hopper to hold dry ingredients of the extrudable building material therein. Further, the material delivery system includes a mixing unit to receive water from the tank and dry ingredients from the hopper. The mixing unit includes an agitator to mix the water and the dry ingredients together to form the extrudable building material. Still further, the material delivery system includes a controller coupled to the agitator that is to: measure a load imparted to the agitator by the extrudable building material, add additional water to the mixing unit when the load is above a first threshold, and add additional dry ingredients to the mixing unit when the load is below a second threshold.

Abstract: Described herein are apparatuses, systems, and methods for fabricating tissue constructs, such as by fabricating perfusable tissue constructs by embedding a sacrificial material into a composite matrix yield stress support bath. A composite matrix bath can include a microgel filler and a hydrogel precursor. An extrusion tip can be used for embedded printing of perfusable tissue constructs by disposing sacrificial material into the composite matrix bath while the extrusion tip travels along a predefined course through the composite matrix bath. This sacrificial material can be the printed tissue construct or can be removed to render the matrix bath a perfusable tissue construct. The composite matrix bath can include acellular or cell-laden hydrogels. The sacrificial material can include a salt and a physiological buffer or a non-cytotoxic porogen material. The hydrogel precursor can include at least one of gellan and gelatin. Cross-linking can be carried out chemically, thermally, enzymatically, or physically.

Abstract: A hybrid laser printing (HLP) technology that utilizes ultrafast laser in sequential additive-subtractive modes to create 3D hydrogel constructs. The approach involves the synergistic use of additive crosslinking and subtractive ablation processes that are conventionally mutually exclusive. HLP can be operated at virtually any penetration depth and allow fabrication of multi-layer hydrogel constructs at micrometer resolution. HLP was used to print ready-to-use functional chips using commonly used hydrogels for potential cellular communication and migration applications. HLP was also found to be compatible with in situ printing of cell-laden hydrogel constructs. HLP makes shaping of soft hydrogels into 3D multiscale functional devices possible.

Abstract: A rapid DLP 3D printing control parameter optimization method combining continuous and layered molding includes the following steps: confirming the maximum printable distance of each slice by analyzing the printable area of the model slice. The liquid-liquid interface printing scene was further established, and the flow behavior of the resin between the printed object and the fluorinated oil after printing a layer of slices was simulated and recorded. Next, determine the printing mode of the current slice by slicing the maximum printable distance and numerical simulation model. Then, based on Poiseuille flow, Jacobs working curve and Lambert-Beer law, the resin curing time of continuous and layered printing, the maximum filling distance of continuous printing, the best lifting distance of layered printing, and the corresponding printing platform lifting of the two methods are expressed speed. Finally, camera monitoring is used to determine the print origin before printing starts.

Abstract: A three-dimensional (3D) printing system includes a vessel, a coating subsystem, a calibration block, and a controller. The vessel is configured to contain a photocurable resin having a resin upper surface. The coating subsystem includes a coater module including a coater blade, a lateral movement mechanism coupled to the coater module, a sensor mounted to the coater module, and a vertical actuator system. The calibration block has a calibration surface. The controller is configured to operate the lateral movement mechanism to position the coater blade over the calibration block, operate the vertical actuator system to lower the coater blade into engagement with the calibration surface of the calibration block, operate the sensor to measure a distance to the calibration block, and store the distance as indicative of a vertical position of a lower edge of the coater blade.

Abstract: A three-dimensional shaped article production apparatus includes a shaping table, a layer forming section that forms a powder layer, a head that ejects a liquid containing a binder to a shaping region of a three-dimensional shaped article, a liquid supply system that supplies the liquid to the head, and a moving system that relatively moves the head with respect to the shaping table, wherein the head includes a nozzle that ejects the liquid, a pressure chamber that communicates with the nozzle, a supply flow channel that communicates with the pressure chamber upstream in a supply direction of the liquid, and a circulation flow channel that communicates with the pressure chamber downstream in the supply direction, the circulation flow channel includes a first filter, and a pore diameter of the first filter is larger than a particle diameter of a powder for forming the powder layer.

Abstract: Systems and methods for generating molecular dynamic graded lattice structures that can be used as infill for additively manufactured articles. Molecular dynamically generated lattice infill is based on force balancing a node distribution instead of a circle packing. Field data can be utilized to adjust the spacing of the node distribution according to a force balance equilibrium model that accounts for the field expected to be experienced by the article being additively manufactured. The resultant non-uniform honeycomb structures from force-balancing robustly and efficiently address the connection issues with traditional non-uniform lattice structures.

Abstract: A shaping stage for three-dimensional shaping includes: a table having a shaping surface on which a shaping material is discharged; a posture adjusting unit configured to adjust a posture of the shaping surface; and a cooling unit configured to cool the posture adjusting unit.

Abstract: Methods, systems, and apparatus for carrying out rapid on-site optical chemical analysis in oil feeds are described. In one aspect, a system for manufacture of a tool includes a deposition reactor configured for molecular layer deposition or atomic layer deposition of metal powder to manufacture coated particles, a fabrication unit configured for 3D printing of the tool, and a controller that controls the deposition reactor and the fabrication unit, wherein the fabrication unit and the deposition reactor are integrated for automated fabrication of the tool using the coated particles from the deposition reactor as building material for the 3D printing.

Abstract: The present invention is a sintering method of a ceramic for sintering characterized by forming a layer containing a carbon powder on a surface of an article consisting of a ceramic for sintering, and then irradiating with laser a surface of the carbon powder-containing layer of a lamination obtained.

Abstract: The invention relates to a device (1) for producing three-dimensional workpieces (15), comprising a carrier (7) for receiving raw material powder (9), a build chamber wall (11, 11a, 11b) which extend substantially vertically and which is adapted to laterally delimit and support the raw material powder (9) applied to the carrier (7); an irradiation unit (17) for selectively irradiating the raw material powder (9) applied to the carrier (7) with electromagnetic radiation or particle radiation in order to produce on the carrier (7) a workpiece (15) manufactured from the raw material powder (9) by an additive layer building method, wherein the irradiation unit (17) comprises at least one optical element; and a vertical movement device (31) which is adapted to move the irradiation unit (17) vertically relative to the carrier (7).

Abstract: An additive manufacturing machine includes: a resin support which has at least a portion which is transparent, wherein the resin support defines a build surface; a material depositor operable to deposit a resin which is radiant-energy-curable onto the build surface; at least two build stations, each build station including: a stage positioned adjacent the build zone and configured to hold a stacked arrangement of one or more cured layers of the resin; one or more actuators operable to manipulate a relative position of the stage and the build surface; and at least one radiant energy apparatus positioned opposite to the stage, and operable to generate and project radiant energy in a predetermined pattern.

Abstract: A modular system for manufacturing includes a modular housing, at least one manufacturing platform disposed within the modular housing for direct digital manufacturing of an item, and a modular grid for power and network connections positioned along a plurality of interior walls of the modular housing.