Patent application number | Description | Published |
20090068820 | Microspheres including nanoparticles - A microparticle can include a central region and a peripheral region. The peripheral region can include a nanoparticle, such as a metal nanoparticle, a metal oxide nanoparticle, or a semiconductor nanocrystal. The microparticle can be a member of a monodisperse population of particles. | 03-12-2009 |
20090215209 | Methods of depositing material, methods of making a device, and systems and articles for use in depositing material - Methods for depositing material and/or nanomaterial are disclosed. Also disclosed are methods of making devices including nanomaterials, systems useful for depositing materials and/or nanomaterials, surface treated articles for depositing material and/or nanomaterial onto a substrate, and surface treated transfer surfaces. | 08-27-2009 |
20090221088 | Fluorescent Sensor and Methods - Binding an analyte can cause a change in fluorescence emission of a sensor. The change in fluorescence can be related to the amount of analyte present. The sensor can include a semiconductor nanocrystal linked to a fluorescent moiety. Upon excitation, the fluorescent moiety can transfer energy to the semiconductor nanocrystal, or vice versa. | 09-03-2009 |
20090253224 | Nanocrystal structures - A structure including a grating and a semiconductor nanocrystal layer on the grating, can be a laser. The semiconductor nanocrystal layer can include a plurality of semiconductor nanocrystals including a Group II-VI compound, the nanocrystals being distributed in a metal oxide matrix. The grating can have a periodicity from 200 nm to 500 nm. | 10-08-2009 |
20090299196 | System and Method for Large Field of View, Single Cell Analysis - A method and system for medical imaging employs an excitation source configured to cause an object having a plurality of cells to at least one of emit, reflect, and fluoresce light. An optical receptor is employed that is configured to receive the light from the object. A filter assembly receives the light from the optical receptor and filters the light. An image processor having a field of view (FOV) substantially greater than a diameter of a cell of the object and an analysis resolution substantially matched to the diameter of a cell of the object that receives the filtered light from the filter and analyzes the filtered light corresponding to each cell in the FOV. A feedback system is provided that is configured to provide an indication of a state of each cell in the FOV and a location of a cell in the FOV meeting a predetermined condition. | 12-03-2009 |
20090301564 | Semiconductor nanocrystals heterostructures - A semiconductor nanocrystal heterostructure has a core of a first semiconductor material surrounded by an overcoating of a second semiconductor material. Upon excitation, one carrier can be substantially confined to the core and the other carrier can be substantially confined to the overcoating. | 12-10-2009 |
20090320909 | Electro-optical device - An electro-optical device can include a plurality of semiconductor nanocrystals. In some circumstances, the device can omit an electron transporting layer. | 12-31-2009 |
20100001256 | White light emitting devices - A white light emitting semiconductor nanocrystal includes a plurality of semiconductor nanocrystals. | 01-07-2010 |
20100014799 | Optical structures including nanocrystals - An optical structure can include a nanocrystal on a surface of an optical waveguide in a manner to couple the nanocrystal to the optical field of light propagating through the optical waveguide to generate an emission from the nanocrystal. | 01-21-2010 |
20100148152 | ELECTRICALLY CONTROLLED CATALYTIC NANOWIRE GROWTH - A population of nanowires can be prepared by a method involving electric field catalyzed growth and alteration based on surface charge density. | 06-17-2010 |
20100303119 | Microfluidic Lasers - The present invention generally relates to lasers comprising fluidic channels, such as microfluidic channels. In some instances, the channel contains two or more fluids. The fluids may remain non-mixed within the channel, for example, due to immiscibility and/or laminar flow within the channel. The fluids may be arranged in the channel such that light propagating in a first fluid is prevented by the second fluid from exiting the first fluid, for example, due to differences in the indexes of refraction (e.g., causing internal reflection of the fluid to occur). Thus, in one embodiment, a first fluid may be at least partially surrounded by a second fluid having a second index of refraction lower than the index of refraction of the first fluid. In some embodiments, the fluidic channel is used as a laser, for instance, a dye laser, i.e., a laser created by directing light at a dye to produce coherent light. The dye may be present in one or more fluids within the fluidic channel. The incident light (for example, created by another laser) may be directed at the channel from any angle. In some cases, laser light may be produced in a direction substantially aligned with the longitudinal axis of the channel. In some embodiments, the laser is free of mirrors, prisms, or gratings, or the laser may produce coherent light using a non-resonant photonic pathway. However, in other cases, mirrors, prisms, or gratings may be used to reflect light along the channel to enhance stimulated emission of coherent light. Another aspect of the invention includes optical diffractors, such as prisms or gratings, which can contain a fluid. The optical diffractors, in certain embodiments, are positioned to diffract light, such as coherent light, emanating from the fluidic channel. Still other aspects of the invention provide devices, kits, and methods of making and using such lasers. | 12-02-2010 |
20100308275 | Inorganic particle conjugates - The ionic conjugates include an inorganic particle electrostatically associated with a macromolecule which can interact specifically with predetermined chemical species or biological targets. | 12-09-2010 |
20110012061 | Semiconductor nanocrystal heterostructures - A semiconductor nanocrystal heterostructure has a core of a first semiconductor material surrounded by an overcoating of a second semiconductor material. Upon excitation, one carrier can be substantially confined to the core and the other carrier can be substantially confined to the overcoating. | 01-20-2011 |
20110012087 | SEMICONDUCTOR NANOCRYSTALS - A semiconductor nanocrystal include a first I-III-VI semiconductor material and have a luminescence quantum yield of at least 10%, at least 20%, or at least 30%. The nanocrystal can be substantially free of toxic elements. Populations of the nanocrystals can have an emission FWHM of no greater than 0.35 eV. | 01-20-2011 |
20110021908 | METHODS AND SYSTEMS FOR SPATIALLY IDENTIFYING ABNORMAL CELLS - The present invention provides compositions and methods for imaging tumor resections. | 01-27-2011 |
20110025224 | LIGHT EMITTING DEVICE INCLUDING SEMICONDUCTOR NANOCRYSTALS - A voltage driven light emitting device includes an electroluminescent material and semiconductor nanocrystals, luminescent organic small molecules, mixtures of emissive species molecules, or conductive polymers. The semiconductor nanocrystals, luminescent organic small molecules, mixtures of emissive species molecules, or conductive polymers emit light. The semiconductor nanocrystals, luminescent organic small molecules, mixtures of emissive species molecules, or conductive polymers can be doped to provide desired emission characteristics. Devices that share a substrate and emit more than one color may be conveniently made. | 02-03-2011 |
20110037029 | Copolymer-associated nanomaterial - A nanomaterial can include an outer layer including a ligand. The ligand can include a first monomer unit including a first moiety having affinity for a surface of the nanocrystal, a second monomer unit including a second moiety having a high water solubility, and a third monomer unit including a third moiety having a selectively reactive functional group or a selectively binding functional group. The ligand can be a random copolymer. | 02-17-2011 |
20110037846 | HIGH-RESOLUTION 3D IMAGING OF SINGLE SEMICONDUCTOR NANOCRYSTALS - A method of imaging microscopic objects includes determining the relative depths of two or more semiconductor nanocrystals by analyzing images of the semiconductor nanocrystals at varying z-displacements. | 02-17-2011 |
20110059467 | CONTROLLED MODIFICATION OF SEMICONDUCTOR NANOCRYSTALS - A controlled valency semiconductor nanocrystal can have a desired number of compounds associated with it. The semiconductor nanocrystal can have exactly one compound associated with it, and the compound can have exactly one binding site for an affinity target. The semiconductor nanocrystal can be used to image single copies of cell-surface proteins. | 03-10-2011 |
20110080090 | LIGHT EMITTING DEVICE INCLUDING SEMICONDUCTOR NANOCRYSTALS - A light emitting device including semiconductor nanocrystals can have a unipolar construction. The semiconductor nanocrystals emit light during device operation. The size and chemical composition of the semiconductor nanocrystals can be chosen to provide desired emission characteristics. Devices that share a substrate and emit more than one color may be conveniently made. | 04-07-2011 |
20110089375 | MICROSPHERES INCLUDING NANOPARTICLES - A microparticle can include a central region and a peripheral region. The peripheral region can include a nanoparticle, such as a metal nanoparticle, a metal oxide nanoparticle, or a semiconductor nanocrystal. The microparticle can be a member of a monodisperse population of particles. | 04-21-2011 |
20110101479 | PHOTOVOLTAIC DEVICE INCLUDING SEMICONDUCTOR NANOCRYSTALS - A photovoltaic device includes a semiconductor nanocrystal and a charge transporting layer that includes an inorganic material. The charge transporting layer can be a hole or electron transporting layer. The inorganic material can be an inorganic semiconductor. | 05-05-2011 |
20110104071 | METHODS AND SYSTEMS FOR SPATIALLY IDENTIFYING ABNORMAL CELLS - The present invention provides compositions and methods for imaging tumor resections. | 05-05-2011 |
20110127932 | Blue light emitting semiconductor nanocrystals and devices - A blue light emitting semiconductor nanocrystal having an quantum yield of greater than 20% can be incorporated in a light emitting device. | 06-02-2011 |
20110129420 | MATERIALS AND METHODS FOR BIOLOGICAL IMAGING - Water soluble InAs(ZnCdS) semiconductor nanocrystals with bright and stable emission in the near infrared (NIR) wavelength range have been prepared. The NIR semiconductor nanocrystals can be functionalized to enable imaging of specific cellular proteins. In addition, the utility of the NIR region for in vivo biological imaging is clearly demonstrated by the superior ability of InAs(ZnCdS) semiconductor nanocrystals to image tumor vasculature. | 06-02-2011 |
20110229998 | Blue light emitting semiconductor nanocrystal materials - A semiconductor nanocrystal includes a core including a first semiconductor material and an overcoating including a second semiconductor material. A monodisperse population of the nanocrystals emits blue light over a narrow range of wavelengths with a high quantum efficiency. | 09-22-2011 |
20110236315 | Ligands for Semiconductor Nanocrystals - In this invention, polyimidazole ligands (PILs) incorporating pendant imidazole moieties for nanocrystal binding and either sulfonatebetaine, carboxybetaine, or phosphocholinebetaine moieties for water-solubilization have been developed. Greatly enhanced stability of nanocrystals (both over time and in wide pH range) was achieved by incorporating multi-dentate imidazole moieties which provide strong coordination of the ligand to the nanocrystal surface and prevent aggregation of nanocrystals. Synthesis of betaine PILs was developed by modifying the synthesis of recently developed PEG containing poly imidazole ligands (PEG PILs). These nanocrystals are compact, water soluble, and biocompatible. | 09-29-2011 |
20110262752 | Highly Luminescent Color-Selective Nanocrystalline Materials - A nanocrystal capable of light emission includes a nanoparticle having photoluminescence having quantum yields of greater than 30%. | 10-27-2011 |
20110263062 | Highly Luminescent Color-Selective Nanocrystalline Materials - A nanocrystal capable of light emission includes a nanoparticle having photoluminescence having quantum yields of greater than 30%. | 10-27-2011 |
20110278536 | LIGHT EMITTING MATERIAL - A film can include a plurality of semiconductor nanocrystals and a J-aggregating material in solution. The film can exhibit 90% energy transfer efficiency from the J-aggregating material to the plurality of semiconductor nanocrystals. The film can exhibit photoluminescence that is enhanced at least 2.5 times over an equivalent film including the plurality of semiconductor nanocrystals alone when excited at 465 nm. The film can be contacted onto a substrate by spin casting. | 11-17-2011 |
20110319601 | Inorganic Particle Conjugates - The ionic conjugates include an inorganic particle electrostatically associated with a macromolecule which can interact specifically with predetermined chemical species or biological targets. | 12-29-2011 |
20120061644 | Blue Light Emitting Semiconductor Nanocrystal Materials - A semiconductor nanocrystal includes a core including a first semiconductor material and an overcoating including a second semiconductor material. A monodisperse population of the nanocrystals emits blue light over a narrow range of wavelengths with a high quantum efficiency. | 03-15-2012 |
20120094390 | Fluorescent Sensor and Methods - Binding an analyte can cause a change in fluorescence emission of a sensor. The change in fluorescence can be related to the amount of analyte present. The sensor can include a semiconductor nanocrystal linked to a fluorescent moiety. Upon excitation, the fluorescent moiety can transfer energy to the semiconductor nanocrystal, or vice versa. | 04-19-2012 |
20120138901 | Color Selective Photodetector and Methods of Making - A photoelectric device, such as a photodetector, can include a semiconductor nanowire electrostatically associated with a J-aggregate. The J-aggregate can facilitate absorption of a desired wavelength of light, and the semiconductor nanowire can facilitate charge transport. The color of light detected by the device can be chosen by selecting a J-aggregate with a corresponding peak absorption wavelength. | 06-07-2012 |
20120188633 | DEVICE AND METHOD FOR LUMINESCENCE ENHANCEMENT BY RESONANT ENERGY TRANSFER FROM AN ABSORPTIVE THIN FILM - Disclosed are a device and a method for the design and fabrication of the device for enhancing the brightness of luminescent molecules, nanostructures, and thin films. The device includes a mirror, a dielectric medium or spacer, an absorptive layer, and a luminescent layer. The absorptive layer is a continuous thin film of a strongly absorbing organic or inorganic material. The luminescent layer may be a continuous luminescent thin film or an arrangement of isolated luminescent species, e.g., organic or metal-organic dye molecules, semiconductor quantum dots, or other semiconductor nanostructures, supported on top of the absorptive layer. | 07-26-2012 |
20120193606 | Nanocrystals Including III-V Semiconductors - Semiconductor nanocrystals including III-V semiconductors can include a core including III-V alloy. The nanocrystal can include an overcoating including a II-VI semiconductor. | 08-02-2012 |
20120238047 | LIGHT EMITTING DEVICE INCLUDING SEMICONDUCTOR NANOCRYSTALS - A light emitting device includes a semiconductor nanocrystal and a charge transporting layer that includes an inorganic material. The charge transporting layer can be a hole or electron transporting layer. The inorganic material can be an inorganic semiconductor. | 09-20-2012 |
20120292595 | LIGHT EMITTING DEVICE INCLUDING SEMICONDUCTOR NANOCRYSTALS - A light emitting device includes a semiconductor nanocrystal and a charge transporting layer that includes an inorganic material. The charge transporting layer can be a hole or electron transporting layer. The inorganic material can be an inorganic semiconductor. | 11-22-2012 |
20120319054 | SEMICONDUCTOR NANOCRYSTALS HETEROSTRUCTURES - A semiconductor nanocrystal heterostructure has a core of a first semiconductor material surrounded by an overcoating of a second semiconductor material. Upon excitation, one carrier can be substantially confined to the core and the other carrier can be substantially confined to the overcoating. | 12-20-2012 |
20130102088 | Fluorescent Sensor and Methods - Binding an analyte can cause a change in fluorescence emission of a sensor. The change in fluorescence can be related to the amount of analyte present. The sensor can include a semiconductor nanocrystal linked to a fluorescent moiety. Upon excitation, the fluorescent moiety can transfer energy to the semiconductor nanocrystal, or vice versa. | 04-25-2013 |
20130178047 | Highly Luminescent II-V Semiconductor Nanocrystals - A population of semiconductor nanocrystals can include cores including a II-V semiconductor material, e.g., Cd | 07-11-2013 |
20130184444 | COMPACT NANOPARTICLES FOR BIOLOGICAL APPLICATIONS - A water soluble nanoparticle can include a ligand of formula (I). The ligand can provide zwitterionic character and can provide water solubility, small hydrodynamic diameter, chemical stability, and the capability to modify the nanoparticle with additional functional moieties such as a small molecule, nucleic acid, or protein. | 07-18-2013 |
20130216707 | Materials including semiconductor nanocrystals - A composition includes a layer of nanoparticles and a layer of a second material. | 08-22-2013 |
20130224282 | Multistage Nanoparticles - Multistage nanostructures, e.g., for delivery of agents such as imaging agents and therapeutic agents to tumor vasculature. | 08-29-2013 |
20130225969 | PERSONAL SKIN SCANNER SYSTEM - A personal skin lesion scanner system that can facilitate early detection of changes in the appearance of a user's skin is described. The system includes a handheld device for home use, to record images of a user's skin, and software for analyzing the images. The system can automatically detect changes in the user's skin, such as changes in the size, shape, or color of a skin lesion, and alert the user if any changes are detected. | 08-29-2013 |
20130240787 | SEMICONDUCTOR NANOCRYSTALS - A method of making a nanocrystal includes slowly infusing a M-containing compound and a X donor into a mixture including a nanocrystal core, thereby forming an overcoating including M and X on the core. | 09-19-2013 |
20130240788 | Highly Luminescent Color-Selective Nanocrystalline Materials - A nanocrystal capable of light emission includes a nanoparticle having photoluminescence having quantum yields of greater than 30%. | 09-19-2013 |
20130259808 | MULTIFUNCTIONAL NANOPARTICLES - Multifunctional nanoparticles can include two or more different populations of nanocrystals that impart a combination of properties arising from the constituent populations in a single, multifunctional nanoparticle. | 10-03-2013 |
20140027680 | LIGHT EMITTING MATERIAL - A composition can include a first moiety capable of being excited to an excited state, and a second moiety capable of accepting excited state energy from the first moiety. The second moiety is capable of emitting light with a FWHM of 15 nm or less when excited. The second moiety can be a J-aggregate and the first moiety can be a semiconductor nanocrystal. | 01-30-2014 |
20140035077 | Photovoltaic Device Including Semiconductor Nanocrystals - A photovoltaic device includes a semiconductor nanocrystal and a charge transporting layer that includes an inorganic material. The charge transporting layer can be a hole or electron transporting layer. The inorganic material can be an inorganic semiconductor. | 02-06-2014 |
20140061486 | Spectrometer Devices - A spectrometer can include a plurality of semiconductor nanocrystals. Wavelength discrimination in the spectrometer can be achieved by differing light absorption and emission characteristics of different populations of semiconductor nanocrystals (e.g., populations of different materials, sizes or both). The spectrometer therefore can operate without the need for a grating, prism, or a similar optical component. A personal UV exposure tracking device can be portable, rugged, and inexpensive, and include a semiconductor nanocrystal spectrometer for recording a user's exposure to UV radiation. Other applications include a personal device (e.g. a smartphone) or a medical device where a semiconductor nanocrystal spectrometer is integrated. | 03-06-2014 |
20140158977 | NEAR-INFRARED LIGHT EMITTING DEVICE USING SEMICONDUCTOR NANOCRYSTALS - A near-infrared light emitting device can include semiconductor nanocrystals that emit at wavelengths beyond 1 μm. The semiconductor nanocrystals can include a core and an overcoating on a surface of the core. | 06-12-2014 |
20140161884 | Multistage Nanoparticle Drug Delivery System for the Treatment of Solid Tumors - Nanoparticles for a selective, two stage delivery to tumors have been developed. The nanoparticles are initially sized so that they preferentially accumulate in the tumor tissue as a result of leakage through the defective vascular in the solid tumors. Once in the tumor tissue, the nanoparticles are cleaved hydrolytically and/or by enzymatic cleavage over time to release smaller nanoparticles carrying therapeutic, prophylactic or diagnostic agents into the necrotic interior of the tumors. This provides a simple, elegant and highly effective means of delivery drug selectively not just to tumors generally, but, more importantly, into the poorly vascularized necrotic interiors which drugs are normally unable to penetrate. The nanoparticles have a number of advantages: less toxicity due to selective accumulation only in the tumors; access into the poorly vascularized necrotic interiors of the tumor; and sustained release over a period of time within the tumor. | 06-12-2014 |
20140193508 | SURFACE BINDING OF NANOPARTICLE BASED DRUG DELIVERY TO TISSUE - Microparticles and nanoparticles and compositions thereof are provided. The microparticles and nanoparticles and compositions may be used for the treatment of musculoskeletal disease, such as osteoarthritis and injury. | 07-10-2014 |
20140301950 | IMAGING AGENT FOR DETECTION OF DISEASED CELLS - The present invention provides compositions and methods for imaging, for example, tumor resections. | 10-09-2014 |