Abstract: An electronic device includes a lower layer, a complex dielectric layer on the lower layer, and an upper layer on the complex dielectric layer. The complex dielectric layer includes an amorphous metal silicate layer and a crystalline metal-based insulating layer thereon. Related fabrication methods are also discussed.

Abstract: Disclosed are a quantum dot-block copolymer hybrid, methods of fabricating and dispersing the same, a light emitting device including the same, and a fabrication method thereof. The quantum dot-block copolymer hybrid includes; a quantum dot, and a block copolymer surrounding the quantum dot, wherein the block copolymer has a functional group comprising sulfur (S) and forms a chemical bond with the quantum dot.

Abstract: The present invention relates to a method for amplifying a signal in an immunochro-matographic assay for high-sensitivity detection of an analyte and an immunochromatographic kit using the method, which amplifies a signal by controlling a flow rate by discrimination between the size of a first indicator and the size of a second indicator.

Abstract: Integrated circuit devices include thermal image sensors that utilize quantum dots therein to provide negative resistance characteristics to at least portions of the sensors. The thermal image sensor may include a sensing unit configured to absorb radiation incident on a first surface thereof and first and second electrodes electrically coupled to the sensing unit. The sensing unit includes a plurality of quantum dots therein, which may extend between the first and second electrodes. These quantum dots may be configured to impart a negative resistance characteristic to the sensing unit. In particular, the sensing unit may include a sensing layer having first and second opposing ends, which are electrically coupled to the first and second electrodes, respectively, and the plurality of quantum dots may be distributed within the sensing layer.

Abstract: Embodiments of a printed security mark and a process are disclosed.

Abstract: A method includes forming a first dielectric layer over a substrate; forming nanoclusters over the first dielectric layer; forming a second dielectric layer over the nanoclusters; annealing the second dielectric layer using nitrous oxide; and after the annealing the second dielectric layer, forming a gate electrode over the second dielectric layer.

Abstract: Optical and optoelectronic devices and methods of making same. Under one aspect, an optical device includes an integrated circuit an array of conductive regions; and an optically sensitive material over at least a portion of the integrated circuit and in electrical communication with at least one conductive region of the array of conductive regions. Under another aspect, a method of forming a nanocrystalline film includes fabricating a plurality of nanocrystals having a plurality of first ligands attached to their outer surfaces; exchanging the first ligands for second ligands of different chemical composition than the first ligands; forming a film of the ligand-exchanged nanocrystals; removing the second ligands; and fusing the cores of adjacent nanocrystals in the film to form an electrical network of fused nanocrystals.

Abstract: An improved solid-state light source (103) for producing illuminating light (114) generated by interaction of light from an LED source (105) with a quantum dot, in one embodiment located in a well (117). A solid-state illuminator with integrated quantum dots advantageously allows for an efficient broadband or narrow band LED to be produced in a variety of specified colors and color temperatures, and allows for a more compact, less heat producing, and more energy efficient manufacturable illumination device, and further facilitates integration of the illuminator and detector into medical, industrial, and laboratory illuminators, microchips, or lab-on-chip devices or systems. Methods of use are also disclosed.

Abstract: Disclosed are inorganic nanoparticles comprising a body comprising cadmium and/or zinc crystallized with selenium, sulfur, and/or tellurium; a multiplicity of phosphonic acid ligands comprising at least about 20% of the total surface ligand coverage; wherein the nanocrystal is capable of absorbing energy from a first electromagnetic region and capable of emitting light in a second electromagnetic region, wherein the maximum absorbance wavelength of the first electromagnetic region is different from the maximum emission wavelength of the second electromagnetic region, thereby providing a Stokes shift of at least about 20 nm, wherein the second electromagnetic region comprises an at least about 100 nm wide band of wavelengths, and wherein the nanoparticle exhibits has a quantum yield of at least about 10%. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: Disclosed is a technique of producing that a technique of producing quantum dots that are nano-size semiconducting crystals. An apparatus of producing quantum dots includes a mixer to mix different kinds of precursor solutions uniformly in a channel by diverging each precursor solution into a plurality of micro streams and joining the diverging micro streams individually with different kinds of micro streams, and a heating furnace to pass the precursor mixture solution discharged from the mixer therethrough to create and grow quantum dot nucleuses, thus producing quantum dots. The mixer may further include a heating unit allowing temperature adjustment. In addition, a buffer which is maintained at a relatively low-temperature is provided between the mixer and the heating furnace in order to prevent additional nucleation. Accordingly, quantum dots may be produced even at a high flow rate, which leads to mass-production of quantum dots.

Abstract: Nanocrystals having an indium-based core and methods for making them and using them to construct core-shell nanocrystals are described. These core-shell nanocrystals are highly stable and provide higher quantum yields than known nanocrystals of similar composition, and they provide special advantages for certain applications because of their small size.

Abstract: A quantum dot organic light emitting device and a method of manufacturing the same are disclosed. A first electrode layer is formed on a substrate. A block copolymer film which can cause phase separation on the first electrode layer is formed. The block copolymer film is phase-separated into a plurality of first domains, each having a nano size column shape, and a second domain which surrounds the first domains. A quantum dot template film of the second domain, which comprises a plurality of nano size through holes, is formed by selectively removing the first domains. Quantum dot structures, each of which comprises an organic light emitting layer in the through hole of the quantum dot template film, is formed.

Abstract: The present invention relates to the water soluble self fluorescent quantum carbon dots (C-dots). These C-dots are isolated from carbon soot in one embodiment a wax soot solvent washed and isolated from other larger material by filtration such as by membrane filtration. The C-dots can be varied in their color by change of their size and by the amount of oxidative groups' position on each C-dot.

Abstract: In various embodiments, the present disclosure describes methods and systems for detecting microbes in a sample. The methods are generally applicable to quantifying the number of target bacteria in a sample counted from a detection region of a flow cytometer histogram. The detection methods can be employed in the presence of other microorganisms and other non-target microbe components to selectively quantify the amount of a target microbe. The methods are advantageous over those presently existing for testing of foodstuffs and diagnostic evaluation in their speed, accuracy and ease of use. Various swab collection devices and kits useful for practicing the present disclosure are also described herein.

Abstract: An optical device includes an LED formed on a substrate and a wavelength conversion material, which may be stacked or pixilated, within vicinity of the LED. A wavelength selective surface blocks direct emission of the LED device and transmits selected wavelengths of emission caused by an interaction with the wavelength conversion material.

Abstract: Nanowire devices comprising core-shell or segmented nanowires are provided. In these nanowire devices, strain can be used as a tool to form metallic portions in nanowires made from compound semiconductor materials, and/or to create nanowires in which embedded quantum dots experience negative hydrostatic pressure or high positive hydrostatic pressure, whereby a phase transitions may occur, and/or to create exciton crystals.

Abstract: A semiconductor light emitting device includes: a substrate; a plurality of light emitting cells arranged on the substrate, each of the light emitting cells including a first-conductivity-type semiconductor layer, a second-conductivity-type semiconductor layer, and an active layer disposed therebetween to emit blue light; an interconnection structure electrically connecting at least one of the first-conductivity-type semiconductor layer and the second-conductivity-type semiconductor layer of the light emitting cell to at least one of the first-conductivity-type semiconductor layer and the second-conductivity-type semiconductor layer of another light emitting cell; and a light conversion part formed in at least a portion of a light emitting region defined by the plurality of light emitting cells, the light conversion part including at least one of a red light conversion part having a red light conversion material and a green light conversion part having a green light conversion material.

Abstract: A method of synthesizing nanostructures. In one embodiment, the method includes the step of heating a reaction mixture at an elevated temperature, T, for a period of time effective to allow the growth of desired nanostructures. The reaction mixture contains an amount, P, of a carboxylate salt and an amount, L, of a fatty acid ligand, defining a molar ratio of the fatty acid ligand to the carboxylate salt, ?=L/P, and a hydrocarbon solvent. The reaction mixture is characterizable with a critical ligand protection, ?, associating with the chemical structure of the carboxylate salt such that when ?<?, the reaction mixture is in a limited ligand protection (LLP) domain, and when ?>?, the reaction mixture is in a sufficient ligand protection (SLP) domain.

Abstract: A photovoltaic converter device includes a first conductivity type substrate (a p-type single crystalline silicon substrate 100), a first intermediate layer (an i-type semiconductor layer 110 or a dielectric layer 160), and a second conductivity type semiconductor layer (an n-type semiconductor layer 120). The first intermediate layer (the i-type semiconductor layer 110 or the dielectric layer 160) includes quantum dots (nanoparticles) having at least cores. The first conductivity type substrate is formed from crystalline semiconductor such as single crystalline silicon.

Abstract: The present invention provides means and methods for producing surface-activated semiconductor nanoparticles suitable for in vitro and in vivo applications that can fluoresce in response to light excitation. Semiconductor nanostructures can be produced by generating a porous layer in semiconductor substrate comprising a network of nanostructures. Prior or subsequent to cleavage from the substrate, the nanostructures can be activated by an activation means such as exposing their surfaces to a plasma, oxidation or ion implantation. In some embodiments, the surface activation renders the nanostructures more hydrophilic, thereby facilitating functionalization of the nanoparticles for either in vitro or in vivo use.

Abstract: A non-volatile memory device is provided in which quantum dots are embedded in an oxide thin film formed on a substrate. A conventional Si CMOS process can be used to manufacture the non-volatile memory device in a cost-effective way. Also, a photonic device and an electronic/photonic device, which can store a light signal or emit a stored signal as light, can be produced on a Si wafer in a cost-effective manner.

Abstract: The method utilises a conducting trench base with non-conducting trench walls to corral charged particles precisely into the trenches. The nanoparticles are close packed in the channels and highly ordered. This approach utilises the charge on the particles to selectively deposit them within the trenches, as all nanoparticles in solution can be charged, and this can be extended to any nanoparticle system beyond gold. Also, this method results in the layer-by-layer growth of the gold nanoparticles. Therefore the depth of the nanoparticle layers within the trenches is controllable. This allows the possibility of heterolayered structures of different nanoparticle layers. Further this method ensures that assembly occurs to fill the void space available provided the back-contacting electrode is more conducting than the trench walls.

Abstract: Disclosed herein is a method of forming a spherical InP quantum dot, including: providing a compound containing indium (In); dissolving the compound in alcohol to form a solution; and introducing a compound containing phosphorus (P) into the solution. The method is advantageous because a spherical InP quantum dot can be formed, the method is environment-friendly because alcohol is used as a solvent, because InP quantum dots can be produced in large quantities because the InP quantum dots can be formed while putting all reactants into a reactor and slowly heating the reactants, and because the desired InP quantum dots can be easily recovered by decreasing the temperature of a reactor or by performing centrifugal separation at low speed.

Abstract: A method for producing a fiber membrane of nanofibers that have both smooth and porous surface features. The method includes materials processing using polymer mixes with solvents and melt polymers with additives. The method includes nanomaterial incorporation onto a fiber structure after formation of the fiber structure. The fiber structure can be a part of a nanoparticle carrier material, a nanoparticle disposal medium, a lighting medium, and a catalysis medium.

Abstract: The present application is directed to the preparation and use of a class of nanoparticles that contain a single Quantum Confined dopant. A QCA nanocrystal comprises of a plurality of host atoms in a nanocrystal of a size of less than 10 nm with a single atom of a dopant (or activator). This single QCA dopant, when confined, becomes polarized and creates a large magnetic-moment in a nanosize host that contains atoms of unpaired spins. The quantum confined atom (QCA) which is now pinned, triggers the alignment of the host atoms resulting in nanosize magnetic domain. Engineering of nanomagnets based on QCA nanoparticles can be used in different applications such as: sensors, drug delivery, bio-tagging, cell/DNA tagging, magnetic memories and others.

Abstract: The present disclosure provides embodiments of a new class of hydroxylated quantum dots. The quantum dots have a hydroxylated coat disposed thereon, and which serves to minimize non-specific cellular binding and to maintain the small size of quantum dot probes. Embodiments of the coated quantum dots of the disclosure are just slightly larger than the diameter of uncoated quantum dots, and are bright with high quantum yields. They are also very stable under both basic and acidic conditions. Embodiments of the hydroxylated quantum dots result in significant reductions in non-specific binding relative to that of carboxylated dots, and to protein and PEG-coated dots. Embodiments of the disclosure are advantageous in a range of biological applications where non-specific binding is a major problem, such as in multiplexed biomarker staining in cells and tissues, detection of biomarkers in body fluid samples (blood, urine, etc.), as well as live cell imaging.

Abstract: Method for the preparation of inorganic-NP-composite microgels is based on the reversible transfer of microgels between water and an organic solvent such as tetrahydrofuran (THF). The method is used to produce semiconductor nanocrystals, often referred to as quantum dots (QDs) which are well known for their unique optical, electrical, magnetic and catalytic properties, as the inorganic NPs, recognizing that the best quality QDs are synthesized by a high temperature process in organic media, and have their surface covered with hydrophobic ligands (such as trioctylphosphine oxide, TOPO) that render the NPs insoluble in an aqueous solution.

Abstract: An electromagnetically responsive element includes an arrangement of self-resonant bodies, such as atoms or quantum dots that form an effective dielectric constant, typically at or near a resonance.

Abstract: A non-volatile memory cell includes a first electrode, a steering element, a storage element located in series with the steering element, a plurality of discrete conductive nano-features separated from each other by an insulating matrix, where the plurality of discrete nano-features are located in direct contact with the storage element, and a second electrode. An alternative non-volatile memory cell includes a first electrode, a steering element, a storage element located in series with the steering element, a plurality of discrete insulating nano-features separated from each other by a conductive matrix, where the plurality of discrete insulating nano-features are located in direct contact with the storage element, and a second electrode.

Abstract: The present invention deals with transition metal ions doped semiconductor nanocrystals that are free from heavy metals like cadmium and therefore environment friendly and useful for biological applications. The present invention also describes a process for the preparation of such transition metal ion doped semiconductor nanocrystals, where the reactions take place at a temperature less than 3000 C. The said doped nanocrystals are stable in air and under UV radiation in both solution and precipitated solid form.

Abstract: Various embodiments of the present invention are directed to semiconductor light-emitting devices that provide energy efficient, high-speed modulation rates in excess of 10 Gbits/sec. These devices include a light-emitting layer embedded between two relatively thicker semiconductor layers. The energy efficient, high-speed modulation rates result from the layers adjacent to the light-emitting layer being composed of semiconductor materials with electronic states that facilitate injection of carriers into the light-emitting layer for light emission when an appropriate light-emitting voltage is applied and facilitate the removal of carriers when an appropriate light-quenching voltage is applied.

Abstract: The present invention is an optical semiconductor device including a lower clad layer 12 having a first conduction type, an active layer 14 that is provided on the lower clad layer 12 and has multiple quantum dot layers 51-55 having multiple quantum dots 41, and an upper clad layer 18 that is provided on the active layer 14 and has a second conduction type opposite to the first conduction type, the multiple quantum dot layers 51-55 having different quantum dot densities.

Abstract: A lamp uses a solid state source to pump one or more doped semiconductor nanophosphors to produce a light output of a desired characteristic. The nanophosphor(s) is dispersed in a material, examples of which include liquids and gases. Various nanophosphors are discussed. In the examples, the material with the doped semiconductor nanophosphor(s) dispersed therein appears at least substantially clear when the lamp is off. The exemplary lamp also includes circuitry for driving the solid state source and a housing that at least encloses the drive circuitry. The lamp has a lighting industry standard lamp base mechanically connected to the housing and electrically connected to provide electricity to the circuitry for driving the solid state source.

Abstract: A device using a layer containing emitting semiconductor nanocrystals wherein each emitting nanocrystal includes a core structure wherein the cores have an aspect ratio less than 2:1 and a diameter greater than 10 nanometers and a protective shell surrounding the core

Abstract: A detection method and indicator are disclosed that includes quantum dots that fluoresce under illumination of a first light having a first wavelength to indicate the presence of a predetermined condition, and in particular, a corrosion condition. The quantum dots are surrounded by a shell material that under normal conditions reflect the first light and reacts in the presence of the predetermined condition to permit the first light to illuminate the quantum dot to excite the quantum dot to emit a second light having a second wavelength, which when detected, indicates the presence of the predetermined condition.

Abstract: A solar cell having a nanostructure. The nanostructure may include nanowire electron conductors having a fractal structure with a relatively large surface area. The electron conductors may be loaded with nanoparticle quantum dots for absorbing photons. The dots may be immersed in a carrier or hole conductor, initially being a liquid or gel and then solidifying, for effective immersion and contact with the dots. Electrons may move flow via a load from the electron conductors to the holes of the carrier conductor. The solar cell may be fabricated, for example, with an additive process using roll-to-roll manufacturing.

Abstract: A composite structure, for marking biomolecules in a biological, biochemical or medicinal system, comprises: at least one nano particle and at least one dendritic macromolecule, which has an inner region with branched, especially perfectly branched to highly branched, structures and a periphery, which comprises surface groups of the dendritic macromolecule, wherein a plurality, especially more than 50%, of the surface groups have in the periphery of the dendritic macromolecule, in each case, at least one functional group of first type, wherein the functional group of first type comprises at least one monosaccharide-, oligosaccharide- and/or polysaccharide unit, and wherein the dendritic macromolecule stabilizes the nano particle.

Abstract: A method of making a colloidal solution of ternary AIAIIB nanocrystals, wherein AI and AII are independently selected from an element of periodic table subgroup IIB, when B represents an element of periodic table main group VI; or AI and AII are independently selected from an element from periodic table main group III, when B represents an element of periodic table main group V. The method providing a mixture of AI in a suitable form for the generation of a nanocrystal, and coordinating solvents including at least 30 wt % of fatty acids; heating the reaction mixture for a suitable time, adding B in a suitable form for the generation of a nanocrystal, adding AII in a suitable form for the generation of a nanocrystals; and heating the reaction mixture for a sufficient period of time at a temperature suitable for forming nanocrystal AIAIIB.

Abstract: Semiconductor nanocrystals known as quantum dots (QD) are caged by being associated with a molecule such as an orth-Nitrobenzyl (ONB) group. The luminescence of the QD is suppressed until activated by violet or ultra violet light.

Abstract: Provided are methods and devices for single-molecule genomic analysis. In one embodiment, the methods entail processing a double-stranded nucleic acid and characterizing said nucleic acid. These methods are useful in, e.g., determining structural variations and copy number variations between individuals.

Abstract: A self-assembly nanodevice formed through nucleic acid engineering is disclosed. The nanodevice may include an array of nanoparticles. The nanodevice may further include a substrate that supports the array of nanoparticles. Each of the nanoparticles may be coordinated with a plurality of nucleic acids that are substantially free of Watson-Crick base-paring with nucleic acids coordinated with other nanoparticles. Methods of forming the nanodevice, as well as the microscopic organization of the nanoparticles are also disclosed. By manipulating the nucleic acids as capping ligands, the inter-particle distance may be extended to a greater range than nanotechnology based on alkyl ligands or nucleic acids base-pairing.

Abstract: Polymeric sequence probes and methods are described that enhance the speed and sensitivity of detection of target analytes by combining a multiplicity of binding moieties specific for analyte, at least two of which are linearly arranged and optionally a multiplicity of detectable labels.

Abstract: An economic, direct synthetic method for producing water soluble QDs that are ready for bioconjugation is provided. The method can produce aqueous QDs with emission wavelengths varying from 400 nm to 700 nm. Highly luminescent metal sulfide (MS) QDs are produced via an aqueous synthesis route. MS QDs are capped with thiol-containing charged molecules in a single step. The resultant MS QDs exhibit the distinctive excitonic photoluminescence desired of QDs and can be fabricated to avoid undesirable broadband emissions at higher wavelengths. This provides a significant improvement over the present complex and expensive commercial processes for the production of QDs. The aqueous QDs are stable in biological fluids over a long period of time. In addition, nontoxic ZnS QDs have been produced with good photoluminescence properties by refluxing the ZnS QD suspensions over a period of time.

Abstract: A nanoparticle conjugate comprising a nanoparticle having one or more peptide-ol compounds and one or more polyethylene glycol (PEG) compounds attached thereto. A method of producing the nanoparticle conjugate is also described.

Abstract: A method and apparatus for identifying and tracking surgical objects is disclosed. More specifically, a method and apparatus for identifying and tracking surgical objects such as needles, scalpels, blades, sponges and instruments in a medical industry using an identifier encoded on a fluorescent paint attached to the surgical object combined with detectors and software capable of retrieving the identifying information on the identifier.

Abstract: A semiconductor nanoparticle and semiconductor nanorod that have optical characteristics (luminescence intensity and emission lifetime) superior to those of conventional core/shell nanosized semiconductors. There are provided a triple-layer semiconductor nanoparticle, and triple-layer semiconductor nanorod, having an average particle diameter of 2 to 50 nm and comprising a core layer, an interlayer and a shell layer, wherein the layers are composed of different crystals, and wherein the crystal constructing the shell layer exhibits a band gap greater than that of the crystal constructing the core layer, and wherein the crystal constructing the interlayer has a lattice constant assuming a value between those of the crystal constructing the core layer and the crystal constructing the shell layer.

Abstract: Solar system for converting solar radiation into electric energy, the system comprising: a refraction array and a converting array, the refracting array including at least one refraction sub array, each of the refraction sub arrays including a plurality of refraction sites, each of the refraction sites refracting variable approach angle collimated solar radiation into a plurality of solar rays, each of the solar rays being of a different waveband, each of the refraction sites directing each of the solar rays, refracted thereby, in a different direction, the different direction being at least dependent on the approach angle of the solar radiation, the converting array including a plurality of broadband converting cells, positioned such that light refracted by the refraction array impinges on the converting array, wherein at any given moment, each of the converting cells receives solar rays of a specific waveband originating from different refraction sites and arriving from different directions thereto.

Abstract: Solar cells and methods for manufacturing solar cells are disclosed. An example solar cell includes a first electrode and a second electrode. A first active layer may be disposed between the first electrode and the second electrode, and a second active layer different from the first active layer may also be disposed between the first electrode and the second electrode. One or more layers of conductive material may be disposed between the first active layer and the second active layer, if desired. In some instances, the first active layer may be sensitive to a first range of wavelengths, and the second active layer may be sensitive to a second range of wavelengths, where at least part of the first range of wavelengths does not overlap at least part of the second range of wavelengths. It is contemplated that more than two active layers may be used, if desired.

Abstract: A method for isolating a nanoparticle is disclosed. A medium containing a nanoparticle is provided. The medium is acidified with a weak acid. An alcoholic solvent is added to induce the nanoparticle to precipitate from the medium. The precipitated nanoparticles are separated from the medium.

Abstract: The present invention provides a dye-sensitized solar cell (DSSC), comprising: a substrate having a first electrode formed thereon; a plurality of nanoparticles adsorbed with dye, overlying the first electrode; a solid electrolyte containing metal quantum dots completely covering the nanoparticles and fully filling the space between the nanoparticles; and a second electrode overlying the solid electrolyte. The present invention further provides a method for forming the dye-sensitized solar cell.