Methods and systems for 3D printing use a 3D printing device defined by a polar coordinate frame including an r-axis, a z-axis, and a rotational theta axis. The device includes a base, a rotatably attached printing stage is rotatably attached, a z-axis aligned pair of towers, an r-axis aligned rail slidably coupled to the towers, a print head slidably disposed on the rail, a printing tool coupling component (“master”) joined to the print head, and a rotatable tool carousel with bays housing printing tools, each including a printing tool body (“slave”). The slave may be coupled with and locked to or unlocked from the master to form a coupled tool assembly through a mechanical actuation assembly. With the coupled tool assembly, a printing tool is removable from a respective bay when the coupled tool assembly moves along the r-axis in a direction opposite from the rotatable tool carousel.

Methods and systems for 3D printing use a 3D printing device defined by a polar coordinate frame including an r-axis, a z-axis, and a rotational theta axis. The device includes a base, a rotatably attached printing stage is rotatably attached, a z-axis aligned pair of towers, an r-axis aligned rail slidably coupled to the towers, a print head slidably disposed on the rail, a printing tool coupling component (“master”) joined to the print head, and a rotatable tool carousel with bays housing printing tools, each including a printing tool body (“slave”). The slave may be coupled with and locked to or unlocked from the master to form a coupled tool assembly through a mechanical actuation assembly. With the coupled tool assembly, a printing tool is removable from a respective bay when the coupled tool assembly moves along the r-axis in a direction opposite from the rotatable tool carousel.

Full-automatic microelectronic printer comprising a printing platform, a control component, a feeding component, a camera component, a machine vision device, an ink droplet observation device, and a CAD/CAM system. The printing platform comprises a four-axis linkage system, a printing worktable, a base, a protective housing, an automatic ink cartridge turning device, and an automatic cleaning device; the feeding component comprises a switching control device, an ink cartridge, and an auxiliary processing component; the control component comprises a core control integrated circuit board, a plurality of drive control circuit boards, and a control module interface. The feeding component switches the ink cartridges and the auxiliary processing components to the printing platform in response to the control component which drives the ink cartridges and auxiliary processing components to print, and the protective housing removes fine particles and gas odors. CAD/CAM system assists in designing, generating, and sending instruction to the control component, printing platform, and feeding component to operate and realize full-automatic multi-layer printing.

A system for fabricating an acoustic metamaterial is provided. In an embodiment, a system for fabricating an acoustic metamaterial includes determining at least one tuned physical property for each of a plurality of micro-resonators according to a desired acoustic property of the acoustic metamaterial. For a particular physical property, a value of the tuned physical property for at least one of the plurality of micro-resonators is different from a value of the tuned physical property for at least one other of the plurality of micro-resonators. The system also includes an additively manufacturing device configured to form the acoustic metamaterial such that the acoustic metamaterial comprises a first structure and the plurality of micro-resonators embedded within the first structure. Forming the acoustic metamaterial is performed such that an actual physical property of each of the plurality of micro-resonators is equal to a corresponding tuned physical property for each of the plurality of micro-resonators.

A system for fabricating an acoustic metamaterial is provided. In an embodiment, a system for fabricating an acoustic metamaterial includes determining at least one tuned physical property for each of a plurality of micro-resonators according to a desired acoustic property of the acoustic metamaterial. For a particular physical property, a value of the tuned physical property for at least one of the plurality of micro-resonators is different from a value of the tuned physical property for at least one other of the plurality of micro-resonators. The system also includes an additively manufacturing device configured to form the acoustic metamaterial such that the acoustic metamaterial comprises a first structure and the plurality of micro-resonators embedded within the first structure. Forming the acoustic metamaterial is performed such that an actual physical property of each of the plurality of micro-resonators is equal to a corresponding tuned physical property for each of the plurality of micro-resonators.

A biodegradable flow diverting device (BFDD) that will regulate blood flow into an aneurysmal sac, act as a scaffold for endothelization at the neck of an aneurysm, and degrade after successful dissolution of aneurysm and remodeling of blood vessel. This BFDD and associated fabrication method have the following features: (1) This is a non-braided FDD. The pore shapes, sizes, architectures (especially at the inlet and outlet of the pores), pore densities and porosities can be controlled for the optimum performance depending on the blood vessel and aneurysmal morphologies from patient MRI images, (2) BFDD is developed on a rotary arm with programmable variable speed and diameter in conjunction with a micromotion stage (3) Fabrication system can take any material including blended/composite biomaterials by adjusting temperature of the electro-melt extruder/needle and (4) Fabrication system is compatible with CAM (computer aided manufacturing) software and able to operate based on the adapted G-code.

The invention relates to a printing device (10) for a 3D printer. The printing device comprises a metering unit (18) for melting and plasticizing a material (38) to be printed and a delivery unit (14) for printing the material (38) provided via the metering unit (18). The metering unit (18) and the delivery unit (14) are arranged separately from each other and can be connected to each other, wherein the delivery unit (14) can be transported to the metering unit (18) in order to receive material (38) and, in order to connect the delivery unit (14) to the metering unit (18), a nozzle (74) of the delivery unit (14) and a coupling point (62) of the metering unit (18) come into contact with each other.

The invention relates to a printing device (10) for a 3D printer. The printing device comprises a metering unit (18) for melting and plasticizing a material (38) to be printed and a delivery unit (14) for printing the material (38) provided via the metering unit (18). The metering unit (18) and the delivery unit (14) are arranged separately from each other and can be connected to each other, wherein the delivery unit (14) can be transported to the metering unit (18) in order to receive material (38) and, in order to connect the delivery unit (14) to the metering unit (18), a nozzle (74) of the delivery unit (14) and a coupling point (62) of the metering unit (18) come into contact with each other.

A method of forming a three-dimensional object is carried out by: providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; filling the build region with a polymerizable liquid; irradiating the build region through the optically transparent member to form a solid polymer from the polymerizable liquid while concurrently advancing the carrier away from the build surface to form the three-dimensional object from the solid polymer, while also concurrently: (i) continuously maintaining a dead zone of polymerizable liquid in contact with the build surface by electrochemically generating a polymerization inhibitor therein from a precursor of the polymerization inhibitor, and (ii) continuously maintaining a gradient of polymerization zone (e.g., an active surface) between the dead zone and the solid polymer and in contact with each thereof, the gradient of polymerization zone comprising the polymerizable liquid in partially cured form. Apparatus for carrying out the method is also described.

A method of forming a three-dimensional object is carried out by: providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; filling the build region with a polymerizable liquid; irradiating the build region through the optically transparent member to form a solid polymer from the polymerizable liquid while concurrently advancing the carrier away from the build surface to form the three-dimensional object from the solid polymer, while also concurrently: (i) continuously maintaining a dead zone of polymerizable liquid in contact with the build surface by electrochemically generating a polymerization inhibitor therein from a precursor of the polymerization inhibitor, and (ii) continuously maintaining a gradient of polymerization zone (e.g., an active surface) between the dead zone and the solid polymer and in contact with each thereof, the gradient of polymerization zone comprising the polymerizable liquid in partially cured form. Apparatus for carrying out the method is also described.