Abstract: This invention describes an apparatus, Scanning Localized Evaporation Methodology (SLEM) for the close proximity deposition of thin films with high feature definition, high deposition rates, and significantly improved material economy. An array of fixed thin film heating elements, each capable of being individually energized, is mounted on a transport mechanism inside a vacuum chamber. The evaporable material is deposited on a heating element. The SLEM system loads the surface of heating elements, made of foils, with evaporable material. The loaded thin film heating element is transported to the substrate site for re-evaporation. The re-evaporation onto a substrate, which is maintained at the desired temperature, takes place through a mask. The mask, having patterned openings dictated by the structural requirements of the fabrication, may be heated to prevent clogging of the openings. The translation of the substrate past the evaporation site permits replication of the pattern over its entire surface.

Abstract: A method has been developed for the post-synthesis separation of nanotubes by size and/or type. Solubilized, functionalized nanotubes are passed over a GPC column such that length-separated fractions are collected. These length-separated fractions can then further be separated by diameter or type. Particularly useful are methods for separating nanotubes into metallic and semiconducting fractions.

Abstract: An immunoassay device comprises a plurality of carbon nanotubes having a first end and a second end, wherein the nanotubes are aligned substantially parallel relative to one another; a substrate responsive to an electrochemical signal, the substrate being attached to the first end of at least a portion of the plurality of nanotubes; and a capture antibody attached to at least a portion of the nanotubes not at the first end. An immunoassay method comprises providing the disclosed immunoassay device, contacting the immunoassay with a test sample under conditions suitable for binding of an analyte to the capture antibody, wherein binding of the analyte generates, directly or indirectly, an electrochemical signal and detecting the signal. Methods of making the disclosed immunoassay device are also disclosed.

Abstract: Scanning localized evaporation and deposition of an evaporant on a substrate utilizes a mask assembly comprised of a series of mask elements with openings thereon and spaced apart in a stack. The openings are aligned so as to direct the evaporant therethrough onto the substrate. The mask elements are heated and the stack may include a movable shutter element to block openings in adjacent mask elements. The evaporant streams are usually vertical but some may be oblique to the substrate, and they may be of different materials.

Abstract: The invention decribes an apparatus, Scanning Localized Evaporation Methodology (SLEM) for the close proximity deposition of thin films with high feature definition, high deposition rates, and significantly improved material economy. An array of fixed thin film heating elements, each capable of being individually energized, is mounted on a transport mechanism inside a vacuum chamber. The evaporable material is deposited on a heating element. The SLEM system loads the surface of heating elements, made of foils, with evaporable material. The loaded thin film heating element is transported to the substrate site for re-evaporation. The re-evaporation onto a substrate, which is maintained at the desired temperature, takes place through a mask. The mask, having patterned openings dictated by the structural requirements of the fabrication, may be heated to prevent clogging of the openings. The translation of the substrate past the evaporation site permits replication of the pattern over its entire surface.

Abstract: This invention discloses novel device structures for full color flat panel displays utilizing pseudomorphically cladded quantum dot nanocrystals. Different colors are obtained by changing the core size and composition of the quantum dots while maintaining a nearly defect-free lattice at the core-cladding interface. Light emission from the quantum dot core is obtained either by injection or by avalanche electroluminescence. A nanotip emitter device is also presented. These generic devices can be addressed using a variety of conventional display drivers, including active and passive matrix configurations.

Abstract: Scanning localized evaporation and deposition of an evaporant on a substrate utilizes a mask assembly comprised of a series of mask elements with openings thereon and spaced apart in a stack. The openings are aligned so as to direct the evaporant therethrough onto the substrate. The mask elements are heated and the stack may include a movable shutter element to block openings in adjacent mask elements. The evaporant streams are usually vertical but some may be oblique to the substrate, and they may be of different materials.

Abstract: A process for the fabrication of a photonic crystal (and the crystal produced thereby) comprising producing a first beam of coherent light; generating a second and a third beam of coherent light each in a fixed phase relationship with the first beam; aligning the beams of coherent light so as to form a fixed relative angle of incidence between each pair of beams and to form an evanescent light interference pattern grid on a substrate having a first electrostatic charge; introducing into the evanescent light interference pattern grid a substance having a second electrostatic charge of an attractive nature to the first electrostatic charge; positioning the substance with the second electrostatic charge using the evanescent interference pattern grid in a planned manner on the substrate so as to form a photonic crystal.

Abstract: This invention discloses novel device structures for full color flat panel displays utilizing pseudomorphically cladded quantum dot nanocrystals. Different colors are obtained by changing the core size and composition of the quantum dots while maintaining a nearly defect-free lattice at the core-cladding interface. Light emission from the quantum dot core is obtained either by injection or by avalanche electroluminescence. A nanotip emitter device is also presented. These generic devices can be addressed using a variety of conventional display drivers, including active and passive matrix configurations.

Abstract: A method is described to bulk separate single wall nanotubes (SWNTs) by type (metallic (met-) from semiconducting (sem-)) and diameter. The separation is based on selective precipitation of either sem-SWNTs or met-SWNTs from a population of functionalized SWNTs surfactant N-alkyl-amines, for example, preferentially solubilize sem-SWNTs and precipitate met-SWNTs, while non-surfactant amines to selectively precipitate sem-SWNTs, leaving the met-SWNT fraction in suspension. In addition, the selective precipitation method can be used to separate enriched populations of sem-SWNTs or met-SWNTs by diameter.

Abstract: This invention discloses novel device structures for fill color flat panel displays utilizing pseudomorphically cladded quantum dot nanocrystals. Different colors are obtained by changing the core size and composition of the quantum dots while maintaining a nearly defect-free lattice at the core-cladding interface. Light emission from the quantum dot core is obtained either by injection or by avalanche electroluminescence. A nanotip emitter device is also presented. These generic devices can be addressed using a variety of conventional display drivers, including active and passive matrix configuration.

Abstract: A photonic crystal fabrication apparatus (10) has a LASER (12) optically coupled to a multi-mirror assembly (16) for directing beams of coherent light towards each other beneath a base (40) of a sample cell (18). The sample cell has a removable top (44) in order to permit receipt of components for fabrication of photonic crystals. Formative beams of coherent light interfere to form a grid (20) for receiving primary crystal ingredients, and manipulating beams of coherent light (124) designate defects in the grid for receiving sacrificial spacer materials. The apparatus and method presented herein are capable of fabricating single photonic crystals having properties substantially unobtainable with the prior art.

Abstract: Scanning localized evaporation and deposition of an evaporant on a substrate utilizes a mask assembly comprised of a series of mask elements with openings thereon and spaced apart in a stack.

Abstract: This invention describes an apparatus, Scanning Localized Evaporation Methodology (SLEM), for the close proximity deposition of thin films with high feature definition, high deposition rates, and significantly improved material economy. An array of heating elements, each capable of being individually energized, is mounted on a transport mechanism inside a vacuum chamber. The evaporable material is deposited on a heating element. The SLEM system loads the surface of heating elements, made of foils, with evaporable material. The loaded heating element is transported to the substrate site for re-evaporation. The re-evaporation onto a substrate, which is maintained at the desired temperature, takes place through a mask. The mask, having patterned openings dictated by the structural requirements of the fabrication, may be heated to prevent clogging of the openings. The translation of the substrate past the evaporation site permits replication of the pattern over its entire surface.

Abstract: A method has been developed for the post-synthesis separation of nanotubes by size and/or type. Solubilized, functionalized nanotubes are passed over a GPC column such that length-separated fractions are collected. These length-separated fractions can then further be separated by diameter or type. Particularly useful are methods for separating nanotubes into metallic and semiconducting fractions.

Abstract: A tissue/implant interface, comprising an implant and a bioactive polymer layer adjacent at least a portion of the outer surface of the implant, wherein the polymer layer contains at least one tissue response modifier covalently attached to the polymer layer or entrapped within the polymer layer in a quantity effective to control the tissue response at the site of implantation. Preferably, the at least one tissue response modifier controls inflammation, fibrosis, and/or neovascularization. Exemplary tissue response modifiers include, but are not limited to, steroidal and non-steroidal anti-inflammatory agents, anti-fibrotic agents, anti-proliferative agents, cytokines, cytokine inhibitors, neutralizing antibodies, adhesive ligands, and combinations thereof. Use of the various combinations of tissue response modifiers with bioactive polymers provides a simple, flexible and effective means to control the implant/tissue interphase, improving implant lifetime and function.

Abstract: A tissue/implant interface, comprising an implant and a bioactive polymer layer adjacent at least a portion of the outer surface of the implant, wherein the polymer layer contains at least one tissue response modifier covalently attached to the polymer layer or entrapped within the polymer layer in a quantity effective to control the tissue response at the site of implantation. Preferably, the at least one tissue response modifier controls inflammation, fibrosis, and/or neovascularization. Exemplary tissue response modifiers include, but are not limited to, steroidal and non-steroidal anti-inflammatory agents, anti-fibrotic agents, anti-proliferative agents, cytokines, cytokine inhibitors, neutralizing antibodies, adhesive ligands, and combinations thereof. Use of the various combinations of tissue response modifiers with bioactive polymers provides a simple, flexible and effective means to control the implant/tissue interphase, improving implant lifetime and function.

Abstract: A method for producing a ultrathin semiconducting film, utilizes a substrate with a reactive functionalized surface which is contacted with a reactant compound of a divalent and trivalent chelating metal to produce a metallo-functionalized surface. The metallo-functionalized surface is contacted with bisquinoline or a bisquinoline to produce a deposit of an oligomeric metallo-bisquinoline chelate, which is then contacted with the reactant metal compound to produce a fresh metallo-functionalized surface on the deposit. The fresh metallo-functionalized surface is contacted with the bisquinoline reactant to produce a further deposit of the oligomeric metallo-bisquinoline chelate, and these steps are repeated until a desired thickness of the deposit has been attained.

Abstract: A technique is described for the preparation of conjugated arylene and heteroarylene vinylene polymers wherein conversion of the polymer precursor is effected at a temperature ranging from 150.degree.-300.degree. C. in the presence of forming gas. Studies have shown that the presence of the forming gas suppresses the formation of carbonyl groups, so resulting in an enhancement in photoluminescence and electroluminescence efficiency of the polymer.