Abstract: A material for use in a 3D printer. The material may include a plurality of metallic particles and a stabilizing material. The metallic particles may have an average cross-sectional length that is less than or equal to about 100 nm. The stabilizing material may include an organoamine, carboxylic acid, thiol and derivatives thereof, xanthic acid, polyethylene glycols, polyvinylpyridine, polyninylpyrolidone, or a combination thereof.

Abstract: Transistors comprising semiconducting layers of diketopyrrolopyrrole (DPP) copolymers are disclosed. Processes for purifying DPP copolymers are also disclosed. An organic phase containing the DPP copolymer is treated with an aqueous ammonia solution and then with a palladium scavenger. The DPP copolymer is then isolated, and has a very low palladium content. The resulting DPP copolymer has high mobility.

Abstract: A process including selecting a printing system; selecting an ink composition having ink properties that match the printing system; depositing the ink composition onto a substrate to form an image, to form deposited features, or a combination thereof; optionally, heating the deposited features to form conductive features on the substrate; and performing a post-printing treatment after depositing the ink composition.

Abstract: A sensor including a sensing element comprising conductive features formed on a substrate; wherein the conductive features have been formed from a palladium complex ink composition that has been deposited onto the substrate to form the deposited features and wherein the deposited features have been heated to form the conductive features on the substrate. A method including disposing a palladium complex ink composition onto a substrate to form deposited features; and heating the deposited features to form conductive features on the substrate. A strain gauge sensor including a sensing element comprising conductive features formed on a substrate; wherein the conductive features conform to a two dimensional substrate surface; or wherein the conductive features conform to a three dimensional substrate surface.

Abstract: Methods for coating wires to apply a silver cladding are disclosed herein. Silver nanoparticles are dispersed in a low surface tension solvent to form a coating solution. A wire is drawn through the coating solution to form a coating layer of silver nanoparticles on the wire. The coating layer is then annealed to form the wire with a silver cladding thereon.

Abstract: Methods for coating wires to apply a silver cladding are disclosed herein. Silver nanoparticles are dispersed in a low surface tension solvent to form a coating solution. A wire is drawn through the coating solution to form a coating layer of silver nanoparticles on the wire. The coating layer is then annealed to form the wire with a silver cladding thereon.

Abstract: An article of manufacture includes a substrate and a stretchable, conductive film. The stretchable, conductive film includes a plurality of annealed silver nanoparticles disposed on the substrate. The conductive film can be formed from a liquid composition comprising silver nanoparticles in a decalin solvent. The conductive film can further include a first conductivity associated with an as-annealed shape of the conductive film, and the film can include a second conductivity upon being stretched in at least one direction beyond the as-annealed shape.

Abstract: A process including selecting a printing system; selecting an ink composition having ink properties that match the printing system; depositing the ink composition onto a substrate to form an image, to form deposited features, or a combination thereof; optionally, heating the deposited features to form conductive features on the substrate; and performing a post-printing treatment after depositing the ink composition.

Abstract: A transistor has a substrate, source and drain electrodes on the substrate, the source and drain electrodes formed of a conductor ink having silver nanoparticles with integrated dipolar surfactants, an organic semiconductor forming a channel between the source and drain electrodes, the organic semiconductor in contact with the source and drain electrodes, a gate dielectric layer having a first surface in contact with the organic semiconductor, and a gate electrode in contact with a second surface of the gate dielectric layer, the gate electrode formed of silver nanoparticles with integrated dipolar surfactants.

Abstract: A composition for forming a conductive film. The composition comprises a plurality of nanowires comprising silver; a latex comprising polymer particles; and an aqueous-based carrier.

Abstract: A transparent conductive film. The film comprises a transparent polymer comprising fused latex polymer particles. A plurality of nanowires comprising silver are partially dispersed in the transparent polymer. Devices employing the transparent conductive film and methods of making the devices are also disclosed.

Abstract: Processes for purifying diketopyrrolopyrrole (DPP) copolymers are disclosed. An organic phase containing the DPP copolymer is treated with an aqueous ammonia solution and then with a palladium scavenger. The DPP copolymer is then isolated, and has a very low palladium content. The resulting DPP copolymer has high mobility.

Abstract: A pH sensor contains a potentiometric sensing electrode made of palladium. An optional metal oxide layer may be coated on the palladium electrode to enhance sensitivity. The pH sensor has high sensitivity, a shorter response time, and good reversibility and stability.

Abstract: A solder mask ink for aerosol jet printing includes a metal oxide and a propylene glycol-based solvent; the solder mask ink has a viscosity from about 50 cps to about 1,000 cps at shear rate of 10 1/s at 25° C., and a shear thinning index from about 1.0 to about 2.0.

Abstract: A nanosilver ink composition including silver nanoparticles; polystyrene; and an ink vehicle. A process for preparing a nanosilver ink composition comprising combining silver nanoparticles; polystyrene; and an ink vehicle. A process for forming conductive features on a substrate using flexographic and gravure printing processes comprising providing a nanosilver ink composition comprising silver nanoparticles; polystyrene; and an ink vehicle; depositing the nanosilver ink composition onto a substrate to form deposited features; and heating the deposited features on the substrate to form conductive features on the substrate.

Abstract: A method of forming a printed pattern on a substrate includes printing a pattern onto the substrate with a conductive ink including a conductive material, a thermoplastic binder and a solvent, curing the printed pattern, and fusing the printed pattern by feeding the printed pattern through a fusing system operated at a temperature of about 20° C. to about 130° C. above the glass transition temperature of the thermoplastic binder and at least 120° C. at a minimum, a pressure of from about 50 psi to about 1500 psi, and a feed rate through the fusing system of about 1 m/min to about 100 m/min. The method may be done continuously. The method improves the sheet resistivity of the printed ink.

Abstract: A method of forming a metal structure. The method comprises providing a dispersion of metal nanoparticles and a solution comprising a transient polymer and solvent. The dispersion of metal nanoparticles and the solution are formed by coaxially electrospinning into a fiber comprising the metal nanoparticles and the transient polymer. The fiber is heated to decompose the transient polymer and form a metallic structure.

Abstract: A solventless radiation curable stretchable ink composition including an aliphatic urethane monomer or oligomer; an acrylic ester monomer; a photoinitiator; and an optional colorant. A patterned article including a deformable substrate; an image printed on the deformable substrate, the image being formed from a radiation curable stretchable ink composition comprising an aliphatic urethane monomer or oligomer; an acrylic ester monomer; a photoinitiator; and an optional colorant.

Abstract: An ink includes a plurality of silver nanoparticles, an aminomethylsilane viscosifier, and a hydrocarbon solvent. A method includes providing an ink including a plurality of silver nanoparticles, an aminomethylsilane viscosifier, and a hydrocarbon solvent, the method including printing an image on a substrate with the ink, and annealing the image on the substrate. An ink includes organoamine-stabilized silver nanoparticles, a viscosifier comprising N-(6-aminohexyl)aminomethyltriethoxysilane, and a hydrocarbon solvent.

Abstract: A paste composition includes a branched metal carboxylate, a solvent in which the branched metal carboxylate is soluble and a gelling agent, wherein the gelling agent is a linear metal carboxylate. The paste solvent may be an aromatic hydrocarbon solvent. The paste compositing may be free of polymeric binder. The paste may be used in forming conductive features on a substrate, including by screen printing or offset printing.