An integrally-formed three-dimensional (3D) bio-printing system capable of alternate feeding of multiple materials, comprising: an optical imaging unit and a light path conversion unit, wherein the optical imaging unit comprises an image processing unit and a projection unit, the image processing unit segmenting a 3D modeling graphic of a printed subject to form image information, the projection unit converting the image information into one or more optical images, and the light path conversion unit projects the imaged light paths into bio-ink that can be cured by light, so that the projected image can cure the bio-ink by means of the focus of light.

An integrally-formed three-dimensional (3D) bio-printing system capable of alternate feeding of multiple materials, comprising: an optical imaging unit and a light path conversion unit, wherein the optical imaging unit comprises an image processing unit and a projection unit, the image processing unit segmenting a 3D modeling graphic of a printed subject to form image information, the projection unit converting the image information into one or more optical images, and the light path conversion unit projects the imaged light paths into bio-ink that can be cured by light, so that the projected image can cure the bio-ink by means of the focus of light.

An artificial structure for promoting microalgae growth includes a 3D-printed structure formed by positioning a printing surface on a movable stage of a 3D bioprinter in contact with a bio-ink that includes a mixture of a pre-polymer material with one or more of cellulose-derived nanocrystals (CNC), and microalgae cells. By projecting modulated light onto the printing surface while moving the stage, the bio-ink is progressively polymerized to define layers of an artificial coral structure with microalgae cells disposed thereon, where the artificial coral structure is configured to scatter light within the structure.

An artificial structure for promoting microalgae growth includes a 3D-printed structure formed by positioning a printing surface on a movable stage of a 3D bioprinter in contact with a bio-ink that includes a mixture of a pre-polymer material with one or more of cellulose-derived nanocrystals (CNC), and microalgae cells. By projecting modulated light onto the printing surface while moving the stage, the bio-ink is progressively polymerized to define layers of an artificial coral structure with microalgae cells disposed thereon, where the artificial coral structure is configured to scatter light within the structure.

Provided herein are systems and processes to control multiple temperatures in additive manufacturing. Such temperature control adjusts polymer properties and facilitates processing of materials to form 3D objects. The systems and processes disclosed herein also facilitate the processing of typically difficult-to-process materials and deliver such materials to a photocuring zone configured to photopolymerize materials into 3 dimensional objects with a layer-by-layer process. Such processes can include the steps of heating a resin to a flowable temperature, applying the resin to a carrier, cooling the film to increase viscosity or to solidify the resin, and applying the film containing the resin onto an area being printed, then photocuring the film. Also provided herein are resins and related polymer materials having properties that are tunable with exposure to more than one temperature zone. The formed polymers can include multiple regions of polymer material, each independently having distinct properties. Processes and systems are also provided herein that are configured to produce polymeric materials having multiple regions with distinct properties from a single-component formulation.

A high-speed additive manufacturing apparatus includes a main body, a sintering module, a product carrying member, a raw material carrying member, and a raw material wiper. The main body includes a printing tank and a raw material tank adjacent to the printing tank. The sintering module is arranged on the main body. The sintering module includes a plurality of sintering light source assemblies. Each of the sintered light source assemblies has a light beam emitting end. The light beam emitting end emits a sintering light beam. The light beam emitting ends of the sintering light source assemblies are arranged in a plurality of rows. Each light beam emitting end in one row is unaligned with the light beam emitting end in adjacent rows along a direction in which the light beam emitting end moves.

A high-speed additive manufacturing apparatus includes a main body, a sintering module, a product carrying member, a raw material carrying member, and a raw material wiper. The main body includes a printing tank and a raw material tank adjacent to the printing tank. The sintering module is arranged on the main body. The sintering module includes a plurality of sintering light source assemblies. Each of the sintered light source assemblies has a light beam emitting end. The light beam emitting end emits a sintering light beam. The light beam emitting ends of the sintering light source assemblies are arranged in a plurality of rows. Each light beam emitting end in one row is unaligned with the light beam emitting end in adjacent rows along a direction in which the light beam emitting end moves.

A system for producing images directly on a surface includes an operational curing system comprised of a thermal acquisition system, a distance monitoring device, and a directed radiant energy source. The system also includes a support assembly for supporting the operational curing system relative to a substrate and a computer-based control system processing data and controlling the operational curing system and the support assembly.

A system for producing images directly on a surface includes an operational curing system comprised of a thermal acquisition system, a distance monitoring device, and a directed radiant energy source. The system also includes a support assembly for supporting the operational curing system relative to a substrate and a computer-based control system processing data and controlling the operational curing system and the support assembly.

Disclosed embodiments relate to recoater systems for use with additive manufacturing systems. A recoater assembly may be used to deposit a material layer onto a build surface of an additive manufacturing system. In some instances, the recoater assembly may include a powder entrainment system that trails behind a recoater blade of the recoater assembly relative to a direction of motion of the recoater blade across a build surface of the additive manufacturing system. The powder entrainment system may generate a flow of fluid across a portion of the build surface behind the recoater blade that at least temporarily entrains powder above a threshold height from the build surface to mitigate, or prevent, the formation of defects on the build surface with heights greater than the threshold height.