Described are systems and methods for multi-material printing. The systems and methods can utilize a stereolithographic printing device, a moving stage, and a microfluidic device. The microfluidic device can include a plurality of reservoirs, each reservoir housing a different ink for printing, and a microfluidic chip. The microfluidic chip can include a chamber that comprises a plurality of inlets, a printing region, and one or more outlets as well as an elastic membrane.

Described are systems and methods for multi-material printing. The systems and methods can utilize a stereolithographic printing device, a moving stage, and a microfluidic device. The microfluidic device can include a plurality of reservoirs, each reservoir housing a different ink for printing, and a microfluidic chip. The microfluidic chip can include a chamber that comprises a plurality of inlets, a printing region, and one or more outlets as well as an elastic membrane.

Embodiments related to systems and methods of forming structures on substrates (e.g., flexible substrates, fabrics, textiles, leathers) are disclosed. In some embodiments, a method of forming a structure on a substrate is provided. The method may involve submerging at least one surface of the substrate into a resin bath. The method may include patterning electromagnetic radiation through a window onto one or more regions of the substrate to polymerize the resin onto the one or more regions of the substrate. An alternative method may involve covering a surface of the substrate with a layer of polymeric powder. The alternative method may include directing electromagnetic radiation toward one or more regions on the surface of the substrate to heat the polymeric powder to form a layer on the surface of the substrate. A method of depositing an ultraviolet (UV)-curable material onto a substrate by a valve jetting process is also provided.

Embodiments related to systems and methods of forming structures on substrates (e.g., flexible substrates, fabrics, textiles, leathers) are disclosed. In some embodiments, a method of forming a structure on a substrate is provided. The method may involve submerging at least one surface of the substrate into a resin bath. The method may include patterning electromagnetic radiation through a window onto one or more regions of the substrate to polymerize the resin onto the one or more regions of the substrate. An alternative method may involve covering a surface of the substrate with a layer of polymeric powder. The alternative method may include directing electromagnetic radiation toward one or more regions on the surface of the substrate to heat the polymeric powder to form a layer on the surface of the substrate. A method of depositing an ultraviolet (UV)-curable material onto a substrate by a valve jetting process is also provided.

An additive manufacturing apparatus includes a stage configured to hold a component. A radiant energy device is operable to generate and project radiant energy toward the stage. An actuator is configured to change a relative position of the stage relative to the radiant energy device. A feed module is configured to support a feed roll of a resin support upstream of the stage about a feed mandrel. A first control device is operably coupled with the feed mandrel. A take-up module is configured to support a take-up roll of the resin support downstream of the stage about a take-up mandrel. A second control device is operably coupled with the take-up mandrel. A computing system is operably coupled with one or more sensors. The computing system is configured to provide commands to at least one of the first control device or the second control device to respectively rotate the first control device or the second control device to obtain a target tension on the resin support.

An additive manufacturing apparatus includes a stage configured to hold a component. A radiant energy device is operable to generate and project radiant energy toward the stage. An actuator is configured to change a relative position of the stage relative to the radiant energy device. A feed module is configured to support a feed roll of a resin support upstream of the stage about a feed mandrel. A first control device is operably coupled with the feed mandrel. A take-up module is configured to support a take-up roll of the resin support downstream of the stage about a take-up mandrel. A second control device is operably coupled with the take-up mandrel. A computing system is operably coupled with one or more sensors. The computing system is configured to provide commands to at least one of the first control device or the second control device to respectively rotate the first control device or the second control device to obtain a target tension on the resin support.

A three-dimensional (3D) printing system is configured to manufacture a three-dimensional 3D article in a layer-by-layer manner. The 3D printing system includes a resin vessel, a tank agitation subsystem, a fabrication subsystem, and a controller. The resin vessel is configured to contain photocurable resin and has a lower region within a distance H of a bottom surface of the resin vessel. The agitation subsystem includes (a) a grating disposed within the lower region of the resin vessel and (b) an agitation movement mechanism coupled to the grating. The fabrication subsystem is configured to form the 3D article by a layer-by-layer selective curing of the photocurable resin. The controller is configured to operate the agitation movement mechanism to oscillate the grating along a lateral Y-axis to remix filler particulates within the photocurable resin.

A three-dimensional (3D) printing system is configured to manufacture a three-dimensional 3D article in a layer-by-layer manner. The 3D printing system includes a resin vessel, a tank agitation subsystem, a fabrication subsystem, and a controller. The resin vessel is configured to contain photocurable resin and has a lower region within a distance H of a bottom surface of the resin vessel. The agitation subsystem includes (a) a grating disposed within the lower region of the resin vessel and (b) an agitation movement mechanism coupled to the grating. The fabrication subsystem is configured to form the 3D article by a layer-by-layer selective curing of the photocurable resin. The controller is configured to operate the agitation movement mechanism to oscillate the grating along a lateral Y-axis to remix filler particulates within the photocurable resin.

A method for obtaining, by additive manufacture, a component including at least one recess, this method including: a step of forming, by additive manufacture, a one-piece blank component, in which the at least one recess contains a support including a core in the form of a block of material and cellular elements that connect the core to the recess; and a step of detaching the support from the rest of the blank component in order to expose the recess.

A 3D printing system comprising, an extendable body, a material delivery system, a first wall adhesion device, and a second wall adhesion device.