The disclosed embodiments provide a system that forms a three-dimensional (3D) nanostructure through 3D printing. During operation, the system performs a 3D printing operation that uses multiple passes of a scanning probe microscope (SPM) tip to deliver an ink to form the 3D nanostructure, wherein the ink includes both a positively charged polyelectrolyte (PE) and a negatively charged PE. While delivering the ink, the SPM tip is loaded with the ink and moved to a target location to deposit the ink. Finally, after the multiple passes are complete, the system cures the 3D nanostructure to remove excess positive or negative charges from the 3D nanostructure.

Disclosed herein is a system for surface treating an internal surface of a part. The system comprises a tank within which the part is locatable. The system also comprises a fluid within the tank and capable of submersing the part when the part is located within the tank. The system further comprises a nozzle submersed in the fluid and configured to generate a stream of cavitated fluid directed in a first direction. The system additionally comprises a deflection tool submersed in the fluid and comprising a deflection surface that redirects the stream of cavitated fluid from the first direction to a second direction. The first direction is away from the internal surface of the part and the second direction is toward the internal surface of the part.

Sacrificial additively manufactured molds having a dissolvable material for use in thermoplastic injection molding processes at plastic melt temperatures in the range of 70-450 degrees C. and injection pressure in the range of 0.2-400 MPa. A method of producing a molded article using said sacrificial additively manufactured molds is also disclosed.

A dispatch system and a dispatch method for manufacturing mold are provided. The dispatch system includes a control unit, a mold material storage unit, a processing cutter storage unit, an object pick-and-place and transfer unit, a mold processing unit and a mold product storage unit. The mold material storage unit includes many unprocessed mold materials. The processing cutter storage unit includes many processing cutters. The object pick-and-place and transfer unit is electrically connected to the control unit and disposed between the mold material storage unit and the processing cutter storage unit. One of the unprocessed mold materials and one of the processing cutters are transferred to the mold processing unit by the object pick-and-place and transfer unit, the unprocessed mold material is processed to form a mold product by the mold processing unit, and the mold product is transferred to the mold product storage unit.

A device comprising; a controller arranged to receive data for an article to print; a sub-device comprising a resin source arranged to provide material for printing the article; a radiation source arranged to direct radiation for the printing of said article; a plurality of stations, said stations including a printing tank in which the article is printed, at least one cleaning station for cleaning the printed article and a curing station arranged to at least partially complete the curing of the printed article; a build surface upon which the article is arranged to be printed; wherein controller is arranged to move the build surface and the plurality of stations relative to each other.

Disclosed herein are methods of forming a three-dimensional object having a biodegradable or bioerodible polymer or copolymer. In some embodiments, the methods include providing a dual cure resin with a photoinitiator, monomers and/or prepolymers that are polymerizable by exposure to actinic radiation or light, at least one cyclic ester, a ring-opening polymerization initiator, and a ring-opening polymerization catalyst. Resins useful for carrying out such methods, and products produced from such methods, are also described.

Method for removing resin residues from a model created by three-dimensional 3D printing, including the steps of creating a three-dimensional model through three-dimensional 3D printing, inserting the model into a container (10), introducing a solvent (24) into the container (10) and moving the container (10) with the solvent (24) and the model by means of repeated linear movements. The application further relates to a container (10) for removing resin residues from a model created through three-dimensional 3D printing, the container (10) including a tank (20) adapted to contain a solvent (24), a cover (30) adapted to close the tank (20) and means (38) for sealing the cover (30) to the tank (20), wherein the cover (30) includes or is a base (32) of three-dimensional 3D printer, the base (32) including one or more anchoring elements (34) for a three-dimensional model.

A system for manufacturing a three-dimensional object facilitates the removal of support material from the object. The system includes a controller configured to move a platen to position the object at a position opposite a microwave radiator and then operate the microwave radiator to change the phase of the support material from solid to liquid. The controller either monitors the expiration of a predetermined time period or a temperature of the object to determine when the microwave radiator operation is terminated. The microwave radiation does not damage the object because the support material has a dielectric loss factor that is greater than the dielectric loss factor of the object.

A method of forming a three-dimensional object, which method includes a cleaning or washing step, is carried out by: (a) providing a carrier and a fill level, and optionally an optically transparent member having a build surface defining the fill level, the carrier and the fill level having a build region therebetween; (b) filling the build region with a polymerizable liquid, the polymerizable liquid comprising a mixture of (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from the first component; (c) irradiating the build region with light, to form a solid polymer scaffold from the first component and also advancing the carrier away from the build surface to form a three-dimensional intermediate having the same shape as, or a shape to be imparted to, the three-dimensional object and containing the second solidifiable component carried in the scaffold in unsolidified and/or uncured form; (d) washing the three-dimensional intermediate; and (e) concurrently with or subsequent to the irradiating step, and/or the washing step, solidifying and/or curing the second solidifiable component in the three-dimensional intermediate to form the three-dimensional object.

The invention discloses a process for the preparation of a biodegradable stent which involves deforming an extruded biodegradable polymer tube axially at a first predefined temperature by applying an axial force for a first predefined time interval. The process is followed by radially expanding the axially stretched tube at a second predefined temperature by pressurizing the tube with an inert gas in one or more stages, the pressure applied in each successive stage being higher than the pressure applied in a previous stage. The process further comprises laser cutting a specific pattern of scaffold structure on the expanded tube and then crimping the laser cut stent on the balloon of delivery catheter in a sterile environment in multiple stages.