摘要:
A process for the production of metal nanoparticles. Nanoparticles are formed by combining a metal compound with a solution that comprises a polyol and a substance that is capable of being adsorbed on the nanoparticles. The nanoparticles are precipitated by adding a nanoparticle-precipitating liquid in a sufficient amount to precipitate at least a substantial portion of the nanoparticles and of a protic solvent in a sufficient amount to improve the separation of the nanoparticles from the liquid phase.
摘要:
Processes for the production of metal nanoparticles. In one aspect, the invention is to a process comprising the steps of mixing a heated first solution comprising a base and/or a reducing agent (e.g., a non-polyol reducing agent), a polyol, and a polymer of vinyl pyrrolidone with a second solution comprising a metal precursor that is capable of being reduced to a metal by the polyol. In another aspect, the invention is to a process that includes the steps of heating a powder of a polymer of vinyl pyrrolidone; forming a first solution comprising the powder and a polyol; and mixing the first solution with a second solution comprising a metal precursor capable of being reduced to a metal by the polyol.
摘要:
A process for the production of metal nanoparticles. The process comprises a rapid mixing of a solution of at least about 0.1 mole of a metal compound that is capable of being reduced to a metal by a polyol with a heated solution of a polyol and a substance that is capable of being adsorbed on the nanoparticles.
摘要:
A metal nanoparticle composition for the fabrication of conductive features. The metal nanoparticle composition advantageously has a low viscosity permitting deposition of the composition by direct-write tools. The metal nanoparticle composition advantageously also has a low conversion temperature, permitting its deposition and conversion to an electrical feature on polymeric substrates.
摘要:
An electrical conductor formed from one or more metallic inks. The electrical conductor comprises a network of interconnected metallic nodes. Each node comprises a metallic composition, e.g., one or more metals or alloys. The network defines a plurality of pores having an average pore volume of less than about 10,000,000 nm3. The electrical conductors advantageously have a high degree of conductivity, e.g., a resistivity of not greater than about 10× the resistivity of the (bulk) metallic composition, which forms the individual nodes.
摘要:
Processes for controlling ink migration during the formation of printable electronic features. In a preferred aspect, the invention is to a process for forming at least a portion of an electronic feature. The process includes the steps of: (a) providing a first substrate having a first surface; (b) modifying the first surface to form a modified surface; and (c) applying an ink to at least a portion of the modified surface, wherein the modified surface interacts with the ink to inhibit lateral and/or longitudinal migration of the applied ink, and wherein the applied ink forms at least a portion of the electronic feature. In another aspect, the invention is to a process for encouraging electronic ink spreading with a surfactant.
摘要:
Processes for controlling ink migration during the formation of printable electronic features. In a preferred aspect, the invention is to a process for forming at least a portion of an electronic feature. The process includes the steps of: (a) providing a first substrate having a first surface; (b) modifying the first surface to form a modified surface; and (c) applying an ink to at least a portion of the modified surface, wherein the modified surface interacts with the ink to inhibit lateral and/or longitudinal migration of the applied ink, and wherein the applied ink forms at least a portion of the electronic feature. In another aspect, the invention is to a process for encouraging electronic ink spreading with a surfactant.
摘要:
A method and assembly is provided for linking an additional vertebral construct to an existing spinal construct having at least two bone screws engaged to corresponding vertebrae and connected by a connecting member. The assembly includes a fastener configured to engage a bone screw of the existing construct and to engage a connecting member connected to the bone screw. The assembly further includes a linking member having an elongated portion configured to connect to a bone screw of the additional construct and a mounting structure configured for mounting on the bone screw of the existing construct. A locking member fixes the orientation of the linking member relative to the bone screw and a clamping member locks the linking member and existing connecting member to the bone screw of the existing construct.
摘要:
A cross connector for attachment between two spinal implants comprises a first element having one end and an opposite end configured for engaging one of the two spinal implants, a second element having one end and an opposite end configured for engaging the other of the two spinal implants, an engagement mechanism between the one end of each of the first and second elements, and a locking element for locking the two elements together at the respective one end. The engagement mechanism includes an interface configured to permit relative pivoting between the first element and the second element about at least two non-parallel axes.
摘要:
A spinal fixation system includes an elongated rod sized to extend between at least two vertebrae and a number of anchor devices for anchoring the rod to the spine. The anchor devices include a bone engaging fastener having a head defining a spherical socket. A ball insert is configured to be placed within the socket and rotated so that a spherical surface of the ball insert is juxtaposed with the spherical surface of the socket. The insert has a first dimension less than the socket opening and a second dimension that upon rotation causes the insert to be captively retained in the socket. The anchor device further includes a yoke defining a yoke channel for receiving the rod and including a stem that is engaged to the ball insert when the insert is captured within the socket. A sleeve is disposed between the yoke channel and the fastener head for supporting the rod thereon. A set screw is threaded into the yoke channel for clamping the rod against the sleeve. The set screw further operates to draw the ball insert into clamped engagement within the socket.