The present disclosure relates a method of 3-dimensional printing a printed part. The method comprises printing an inkjet dopant composition at selected locations on a layer of build material comprising polymer particles. The inkjet dopant composition comprises a dopant dispersed or dissolved in a liquid carrier. Polymer particles at selected areas of the layer of build material are then fused to form a fused polymer layer comprising the dopant. The selected areas of the layer of build material include areas of the layer of build material that have not been printed with the inkjet dopant composition.

The present disclosure relates a method of 3-dimensional printing a printed part. The method comprises printing an inkjet dopant composition at selected locations on a layer of build material comprising polymer particles. The inkjet dopant composition comprises a dopant dispersed or dissolved in a liquid carrier. Polymer particles at selected areas of the layer of build material are then fused to form a fused polymer layer comprising the dopant. The selected areas of the layer of build material include areas of the layer of build material that have not been printed with the inkjet dopant composition.

A multi-fluid kit for three-dimensional printing includes a fusing agent and a fluorescing detailing agent. The fusing agent includes water and a radiation absorber. The radiation absorber absorbs radiation energy and converts the radiation energy to heat. The fluorescing detailing agent includes water and a fluorescent colorant that is active by exposure to ultraviolet energy to emit light in the visible range of from about 400 nm to about 780 nm. The multi-fluid kit is devoid of a second detailing agent and a second fluorescent colorant.

The present disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of making three-dimensional printed articles. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a second fluid agent. The fusing agent can include water, a polar organic solvent having a boiling point from about 200° C. to about 320° C., and a radiation absorber. The radiation absorber can absorb radiation energy and convert the radiation energy to heat. The fusing agent or the second fluid agent can include a dihydrazide antioxidant.

Inflatable membranes may include a pattern layer, a fluorescent layer, and a window, the pattern layer comprising an inner surface and an outer surface, the pattern layer comprising a pattern on the inner surface of the pattern layer, and at least a portion of the pattern layer formed by a transferrable material transferred from a casting plate to the inner surface. The fluorescent layer may include an inner surface and an outer surface, the inner surface of the fluorescent layer abutting the outer surface of the pattern layer and comprising a fluorescent material which, upon receiving of light, causes the fluorescent material to emit fluorescent light and causing the pattern to be detectable by a detector. The window may include a transparent material that spans an aperture formed in a distal end of the inflatable membrane.

An ink for forming a scintillator product includes a phenylated siloxane polymer having at least one functional group per molecule for crosslinking, a filler having a refractive index about matching a refractive index of the phenylated siloxane polymer, where the refractive indices are within about 5% of one another, a rheology modifier, and at least one fluorescent dye.

Three-dimensional printing methods and systems for forming a three-dimensional protein article are disclosed. The methods and systems involve selecting article formation parameters, such as protein ink parameters, solvent bath parameters, shear force parameters, and mapping parameters. After these parameters are selected, the methods and systems iteratively introduce protein ink into a solvent bath via a three-dimensional printing outlet. The result is a three-dimensional protein article. One exemplary protein is silk fibroin. Further processing can be done, such as drying the article.

A method includes applying a transferrable material to an outer surface of a casting plate to form a pattern on the outer surface of the casting plate. After applying of the transferrable material, a composite material is applied to the outer surface of the casting plate to form an inflatable membrane. The composite material covers at least a portion of the pattern and includes a florescent material and a pigment material. The inflatable membrane is cured to allow removal of the inflatable membrane from the casting plate. The inflatable membrane has an inner surface having the pattern detectable upon receiving of light causing the fluorescing material to emit florescent light.

A placement device for placing optoelectronic components on electrical lines includes a holding device for holding at least one electric line extending in a longitudinal direction, and an application device for arranging optoelectronic components on the at least one electrical line.

A method for additive manufacturing includes forming an object including depositing a first material including a first coloring component and a second material including a second coloring component, wherein both the first material and the second material further include a corresponding fluorescent component, scanning the object, including causing an emission of an optical signal from the object, wherein the emission of the optical signal is caused at least in part by an emission from the fluorescent components interacting with the first coloring component and the second coloring component as it passes from the fluorescent components to the surface of the object, sensing the emission of the optical signal, and determining presence of the first material and the second material based at least in part on the sensed emission of the optical signal.