A solid freeform fabrication object includes a hydrogel including a polymer, water, and a coloring material inclusion substance.

A method for manufacturing a composite part of polymer and metal utilizes a mold having a plurality of mold parts and forming a layer of metal on at least one inner or cavity-facing surface of the mold. Thereafter the mold parts are assembled to one another to form a mold cavity defined in part by the layer of metal. The mold cavity is then filled with resin material so that the resin material is in contact with the layer of metal. A curing or hardening of the resin material in the mold cavity is followed by an opening of the mold and the removal of a composite part having a metal shell or outer layer and a polymeric backing or inner layer.

A ethically sound, safe, feasible, and cost-effective microsurgery practice technique that can easily be practiced by trainees having different skill levels and an adjustable device for holding and manipulating vascular tissue during microsurgery practice, especially for practicing anastomoses.

Clean chamber technology for 3D printers and bioprinters is described. An airtight chamber or enclosure is provided so that positive pressure can be created inside the chamber. Unfiltered air is sucked in from outside into the chamber through a high efficiency filter such as a HEPA filter, using an electrically powered fan or blower, filtering out at least about 99% of particles and contaminants. The filtered air is then pushed into a 3D printing area inside the chamber and out through vents within the frame of the chamber. The technology provides a clean environment for 3D bioprinting of human tissue models and organs and 3D cell culturing without requiring clean room facilities.

Anatomically accurate brain phantoms are disclosed which may be patient specific and used for experimentally testing neuromodulation and neuroimaging procedures.

The invention relates to a method for providing a 3D-print data set of a dental model structure (100) to be mounted on an articulator (5), comprising: —providing an articulator data set of the articulator (5) on which the dental model structure (100) is to be mounted; —providing a dental situation data set which represents a dental situation of an upper jaw and/or a lower jaw, the dental situation data set including data to display the dental situation as a virtual representation of the dental situation on a display; —selecting at least one distance element (20) from a plurality of different predefined and/or prefabricated distance elements based on the articulator data set and the dental situation data set; —generating a connecting structure data set representing at least a virtual connecting structure (15) arranged between the virtual representation of the dental situation and a virtual representation of the at least one selected distance element; and—generating the 3D-print data set based on the dental situation data set and the connecting structure data set. Furthermore, the invention relates to a corresponding computer program product, a dental model structure, a mounting plate and a dental model system.

An organ model comprises a polymer body formed from one or more selectively deposited substructures of a printable polymer-based ink composition, wherein the one or more selectively deposited substructures form a printed geometrical structure that corresponds to at least a portion of an anatomical structure of an organ, wherein a formulation of the printable polymer-based ink is selected such that the printed geometrical body has one or more material properties that match or substantially match one or more corresponding tissue material properties of an organ tissue, and an electronic device integrated onto a surface or into a structure of the printed geometrical structure.

A test specimen for validating operating parameters of a method for the additive manufacturing of a part by laser melting on powder beds includes at least one upper face, at least one lower face and side faces, including a front side face and a rear side face that are substantially on opposite sides from one another. The test specimen has at least one recess opening onto the front and rear side faces, the recess having a substantially triangular cross sectional shape being delimited by three internal faces, including a first lower internal face oriented upwards, a second upper internal face oriented downwards, and a third upper internal face which defines a narrow wall with one other of the side faces, which is inclined.

A method for preparing a fully soft self-powered vibration sensor mainly uses a laser carbonization technology to prepare a two-dimensional porous carbon electrode with an origami structure, and then transfers the two-dimensional porous carbon electrode to a three-dimensional polydimethylsiloxane (PDMS) cavity through mold transfer; Finally, a laser engraving technology is used to create microstructures on surfaces of the porous carbon electrode and a PDMS film. The sensor includes the PDMS film, a liquid metal droplet oscillator, a porous out-of-plane carbon electrode, and a 3D PDMS cavity assembled tightly from top to bottom. The sensor works based on the triboelectric nanogenerator principle, when the sensor is excited by vibrations, contact and triboelectrification at an interface of the liquid metal droplet oscillator and PDMS film charge both objects, making contact surfaces carry stable charges, which allows the movement of the liquid metal droplet oscillator to output current through electrostatic induction.

Instructional dermatology surface models (IDSMs) useful as educational tools are provided herein, including a three-dimensional base rendered from at least one reference image of a skin lesion and a two-dimensional image layer rendered from the at least one reference image of the skin lesion disposed on a top surface of the three-dimensional base. Also provided are methods of manufacture, assembly, and use of the disclosed IDSMs, together with educational kits including a selection of IDSMs for simulating a variety of skin lesions.