A method of making a polyimide (PI)-based material. In one embodiment, the method begins by dispersing a polyamic acid (PAA) oligomer and photo-initiator into a photo-reactive monomer to form a liquid resin. In contrast to the above-described prior art, the liquid resin is substantially devoid of any non-reactive solvents. Electromagnetic radiation is then applied (e.g., in a 3D printing operation) to solidify the liquid resin and to substantially form a interpenetrating polymer network (IPN) in which the PAA oligomer is entangled within the network formed by the photo-reactive monomer but remains substantially independent and un-crosslinked from the PAA oligomer. Thereafter, the PAA-based IPN is thermally cycled to form a polyimide-based IPN.

A method of printing a hydrogel-based device includes contacting a monomer, a crosslinker, a photoinitiator, and a precursor salt with a solvent to form an ink solution, printing the ink solution onto a substrate, exposing the ink solution to light, sufficient to form a hydrogel, and contacting the hydrogel with a reducing agent sufficient to precipitate nanoparticles from the precursor salt in the hydrogel.

A photocurable resin composition contains a radically polymerizable compound (A), polysilsesquioxane particles (B), and a curing agent (C). Polysilsesquioxane particles (B) have polysilsesquioxane at least at the surface of the particles. The radically polymerizable compound (A) is a mixture of multifunctional radically polymerizable compound (A-1) and monofunctional radically polymerizable compound (A-2), including at least multifunctional radically polymerizable compound (A-1) in more than 60% by mass. Multifunctional radically polymerizable compound (A-1) has an ethylenically unsaturated group equivalent of 250 g/eq to less than 700 g/eq. The amount of polysilsesquioxane particles (B) is 5 to 30 parts by mass relative to 100 parts by mass of radically polymerizable compound (A).

Provided are methods and systems for manufacturing and using heat-shrink elastomeric. An example method of manufacturing a heat-shrink elastomeric element comprises providing a thermoplastic elastomeric element having a first shape; modifying the thermoplastic elastomeric element to produce a thermoset elastomeric element having the first shape; heating the thermoset elastomeric element to a temperature of at least the glass transition temperature of the thermoset elastomeric element; adjusting the first shape of the thermoset elastomeric element to produce a second shape with at least one dimension greater than that of the first shape; and cooling the thermoset elastomeric element to a temperature below that of the glass transition temperature of the thermoset elastomeric element to produce the heat-shrink elastomeric element.

Provided is a method for manufacturing photoabsorbing contact lenses and photoabsorbing contact lenses produced thereby. The method comprises: (a) providing a mold assembly comprised of a base curve and a front curve, the base curve and the front curve defining and enclosing a cavity therebetween, the cavity containing a reactive mixture, wherein the reactive mixture comprises at least one polymerizable monomer, a photoinitiator which absorbs at an activating wavelength, and a photoabsorbing compound which displays absorption at the activating wavelength; and (b) curing the reactive mixture to form the photoabsorbing contact lens by exposing the reactive mixture to radiation that includes the activating wavelength, wherein the radiation is directed at both the base curve and the front curve of the mold assembly, and wherein the radiation's radiant energy at the base curve is greater than the radiation's radiant energy at the front curve.

Disclosed is a method to 3D print materials with defined bacterial communities into controlled, complex 3D structures, and compositions. The technique includes first providing an ink composition that includes a pre-polymer composition and a microorganism, where the pre-polymer composition includes a polymerizable monomer, a cross-linking agent, the photoinitiator, and a solvent. The technique also includes 3D printing a pattern in a hydrogel support matrix using the ink composition where the hydrogel support matrix is in a container. The technique may also include forming a 3D printed engineered living material by curing the 3D printed pattern.

A method for producing a support for a motor vehicle, in particular a dashboard support, comprises the following steps: producing a core from a foam material and at least partially surrounding the core with a unidirectional layer to form a reinforced core. A resulting support for a motor vehicle has a core made of a foam material, wherein the core is at least partially provided with a unidirectional layer.

The present invention aims to provide a supporting material for supporting the shape of a photofabrication model on photofabrication in ink-jet three dimensional printing method in which the photocured product is excellent in solubility in water and is easy to remove after photofabrication, and the like. A modeling material for forming a photofabrication model in ink-jet three dimensional printing method containing a curable resin component with a weighted average of SP value of 9.0 to 10.3; and a supporting material for supporting the shape of a photofabrication model on photofabrication in ink-jet three dimensional printing method containing a water-soluble monofunctional ethylenically unsaturated monomer (F), polyoxypropylene glycol with a number average molecular weight of 100 to 5,000 and/or water (G), and a photopolymerization initiator (D).

The present invention aims to provide a supporting material for supporting the shape of a photofabrication model on photofabrication in ink-jet three dimensional printing method in which the photocured product is excellent in solubility in water and is easy to remove after photofabrication, and the like. A modeling material for forming a photofabrication model in ink-jet three dimensional printing method containing a curable resin component with a weighted average of SP value of 9.0 to 10.3; and a supporting material for supporting the shape of a photofabrication model on photofabrication in ink-jet three dimensional printing method containing a water-soluble monofunctional ethylenically unsaturated monomer (F), polyoxypropylene glycol with a number average molecular weight of 100 to 5,000 and/or water (G), and a photopolymerization initiator (D).

A composition comprising a plurality of cell aggregates for use in the production of engineered organotypic tissue by organ printing. A method of making a plurality of cell aggregates comprises centrifuging a cell suspension to form a pellet, extruding the pellet through an orifice, and cutting the extruded pellet into pieces. Apparatus for making cell aggregates comprises an extrusion system and a cutting system. In a method of organ printing, a plurality of cell aggregates are embedded in a polymeric or gel matrix and allowed to fuse to form a desired three-dimensional tissue structure. An intermediate product comprises at least one layer of matrix and a plurality of cell aggregates embedded therein in a predetermined pattern. Modeling methods predict the structural evolution of fusing cell aggregates for combinations of cell type, matrix, and embedding patterns to enable selection of organ printing processes parameters for use in producing an engineered tissue having a desired three-dimensional structure.