Abstract: An ultrathin plasmonic subtractive color filter in one embodiment includes a transparent substrate and an ultrathin nano-patterned film formed on the substrate. A plurality of elongated parallel nanoslits is formed through the film defining a nanograting. The nanoslits may be spaced apart at a pitch selected to transmit a wavelength of light. The film is formed of a material having a thickness selected, such that when illuminated by incident light, surface plasmon resonances are excited at top and bottom surfaces of the film which interact and couple to form hybrid plasmon modes. The film changes between colored and transparent states when alternatingly illuminated with TM-polarized light or TE-polarized light, respectively. In one configuration, an array of nanogratings may be disposed on the substrate to form a transparent display system.

Abstract: A security document is disclosed which includes an electrical circuit embedded in a document substrate, where the electrical circuit includes a power source with at least one electroactive polymer power generator, and an optical display including at least one electroluminescent display element and at least one nanohole array which forms a layer of the electroluminescent display element. Security features comprising nanohole arrays are also provided. A method of authenticating a security document is disclosed, including illuminating an encoded nanohole array in the security document with a focused light beam or laser light source emitting at least one defined wavelength of incident light, detecting a transmitted portion of the incident light transmitted through the nanohole array with an optoelectronic sensor, analyzing at least one wavelength of the transmitted portion of light to produce a detected signal, and comparing the detected signal with an authentication signal to authenticate the security document.

Abstract: A transparent electrical conductor with a transparent substrate and an electrically conductive layer on the substrate are provided. The conductive layer has a plurality of electrically conductive nanoscale additives. The additives are in electrically conductive contact with one another, in order to form the electrically conductive layer. The substrate is formed from a glass or glass-ceramic material or a composite material having a glass and/or glass-ceramic. The additives are embedded in a matrix layer at least in some regions. The matrix layer is formed by a transparent matrix material. In order to make such a transparent electrical conductor useful, particularly for application in a display, as a touch sensor, or the like for cooking surfaces, the transparent electrical conductor exhibits a temperature resistance of at least 140° C. The additives are dispersed in a matrix material, which is applied as a coating material onto the substrate in one coating step.

Abstract: An apparatus is described that selectively absorbs electromagnetic radiation. The apparatus includes a conducting surface, a dielectric layer formed on the conducting surface, and a plurality of conducting particles distributed on the dielectric layer. The dielectric layer can be formed from a material and a thickness selected to yield a specific absorption spectrum. Alternatively, the thickness or dielectric value of the material can change in response to an external stimulus, thereby changing the absorption spectrum.

Abstract: Provided herein are core-shell silica nanoparticles with a dense silica shell. The nanoparticles have improved properties such as, for example, increased photo luminescence and stability. Also provided are methods for making the nanoparticles.

Abstract: An optical polarizer includes a supporting element and an optical polarizing film supported by the supporting element. The optical polarizing film includes a carbon nanotube film structure and a metallic layer disposed on the carbon nanotube film structure.

Abstract: The present invention relates to a white light-emitting diode with high uniformity and wide angle intensity distribution, and particularly relates to a color temperature tunable white light-emitting diode with high uniformity and wide angle intensity distribution. A nano-phosphor material is coated on one surface of a lampshade of the white light-emitting diode to form a white light phosphor layer for providing a stable white light with high uniformity, wide angle intensity distribution, and good illuminance. Furthermore, the color temperature of the white light-emitting diode can be adjusted by changing the ratio of compositions of white light phosphor layer.

Abstract: A method for manufacturing a symbol on an exterior of an electronic device is provided. The method includes preparing a support layer, preparing a nanograting layer on the support layer, the nanograting layer including a first nanograting area corresponding to a preset symbol and a second nanograting area corresponding to an area other than the preset symbol, wherein each of the first nanograting area and the second nanograting area includes three-dimensional (3D) nanostructures and a pitch between the 3D nanostructures arranged in the first nanograting area is different from a pitch between the 3D nanostructures arranged in the second nanograting area.

Abstract: A device that emits light in response to an electrical or optical excitation, such as LEDs, displays, e-readers, device includes at least one anisotropic flat colloidal semiconductor nanocrystal whose smallest dimension, namely the thickness, is smaller than the other two by a factor of at least 1.5, the emitted light having an intensity and a polarization that vary according to the angle formed by the light emitting direction and the normal to the largest surface of the flat nanocrystal. The device allows to realize a light-emitting device exhibiting simultaneously a high emission spectral finesse and allows proper control of the wavelength, the directivity and/or polarization of the emitted light, and thus increases the brightness and color gamut of displays composed of such a device. Such devices are found for example in displays, televisions, mobile phones, tablets, or computers. The various embodiments of these devices are also presented.

Abstract: A quantum rod sheet includes: a first support layer including a plurality of grooves which extends substantially in a predetermined direction; a plurality of quantum rods arranged substantially in the predetermined direction along the grooves of the first support layer; and a second support layer which covers the first support layer and the quantum rods.

Abstract: A polarizer and a liquid crystal display including the polarizer, the polarizer including a plurality of metal lines extending in one direction and being arranged at regular intervals; and a plurality of low reflection layers on the plurality of metal lines, the plurality of low reflection layers contacting respective upper parts of the plurality of metal lines and having an interval and a width about equal to an interval and a width of the plurality of metal lines, wherein the interval of the plurality of metal lines is smaller than a wavelength of a visible ray, and light incident from an upper side of the plurality of low reflection layers is reflected with reflectivity equal to or smaller than 10%.

Abstract: Disclosed are methods for forming nanoparticle films using electrophoretic deposition. The methods comprise exposing a substrate to a solution, the solution comprising substantially dispersed nanoparticles, an organic solvent, and a polymer characterized by a backbone comprising Si—O groups. The methods further comprise applying an electric field to the solution, whereby a nanoparticle film is deposited on the substrate. Suitable polymers include polysiloxanes, polysilsesquioxanes and polysilicates. Coated glass windows and methods of forming the coated glass windows using the solutions are also disclosed.

Abstract: UV absorbing appliances, such as contact lenses, are prepared by including at least one UV absorbing compound in the appliances. UV absorbing compounds can be water insoluble and/or reside in UV absorbing nanoparticles having a mean diameter less than 10 nm. The UV absorbing nanoparticles incorporate into an appliance by polymerizing a monomer mixture containing the UV absorbing nanoparticles to form an appliance comprising the UV absorbing nanoparticles. The UV absorbing compounds or the UV absorbing nanoparticles incorporate into an appliance by placing the appliance in a solution of the UV absorbing compound or a dispersion of the UV absorbing nanoparticles in a non-aqueous solvent that swells the appliance. The UV absorbing compound or the UV absorbing nanoparticles infuse into the swollen appliance and are retained within the appliance upon removal of the non-aqueous solvent.

Abstract: In embodiments of a transparent display backlight assembly, a backlight panel is operable as a transparent panel, and a light source generates light that the backlight panel directs from the light source to illuminate a display panel of a display device. Light refraction features refract and scatter the light, where the light refraction features are spaced for approximate transparency of the backlight panel and to illuminate the display panel. An active diffuser can be implemented as an additional transparent panel and operable for activation to diffuse the light from the backlight panel that illuminates the display panel.

Abstract: Optical spectrum filtering devices displaying minimal angle dependence or angle insensitivity are provided. The filter comprises a localized plasmonic nanoresonator assembly having a metal material layer defining at least one nanogroove and a dielectric material disposed adjacent to the metal material layer. The dielectric material is disposed within the nanogroove(s). The localized plasmonic nanoresonator assembly is configured to funnel and absorb a portion of an electromagnetic spectrum in the at least one nanogroove via localized plasmonic resonance to generate a filtered output having a predetermined range of wavelengths that displays angle insensitivity. Thus, flexible, high efficiency angle independent color filters having very small diffraction limits are provided that are particularly suitable for use as pixels for various display devices or for use in anti-counterfeiting and cryptography applications.

Abstract: A wire grid polarizer formed as a self-assembled coating on a substrate surface. Metal or other conductive nanowires are coated with a transparent dielectric material having a thickness approximately equal to one-half of the desired WGP wire spacing or pitch. A suspension of coated nanowires in a chromonic liquid crystal is shear-coated onto an aligned substrate and dried. The chromonic liquid crystal, a solution of dye molecules and water, forms an orderly structure and induces the nanowires to align with their longitudinal axes parallel to the shear direction and/or alignment direction. The polarizer has a minimum polarizing wavelength determined by an average lateral spacing of nanowire segments. The polarizer has a transmissivity and a contrast ratio determined by the width of the nanowire segments.

Abstract: An illumination device includes: a light source; an optical component provided separately from the light source; a holding member holding the light source and the optical component; and a variable pressing member variably pressing the optical component against the holding member.

Abstract: A polarizer includes a substrate, a carbon nanotube film, and a number of metal particles. The carbon nanotube film is located over the substrate and includes a number of carbon nanotube yarns, each of which comprises a number of substantially parallelly bundled carbon nanotubes. The metal particles are adhered to the carbon nanotubes of the carbon nanotube film.

Abstract: An optical field enhancement device which includes a transparent substrate having a transparent fine uneven structure on a surface and a metal film formed on a surface of the fine uneven structure on the surface of the substrate and allows projection of excitation light and detection of detection light either from a front surface side of the metal film or from a back surface side of the transparent substrate.

Abstract: Photonic nanostructures, light absorbing apparatuses, and devices are provided. The photonic nanostructures include a plurality of photonic nanobars configured to collectively absorb light over an excitation wavelength range. At least two of the photonic nanobars of the plurality have lengths that are different from one another. Each photonic nanobar of the plurality has a substantially small width and a substantially small height relative to the different lengths. A method for forming such may comprise forming a plurality of first photonic nanobars comprising a width and a height that are smaller than a length of the plurality of first photonic nanobars, and forming a plurality of second photonic nanobars comprising a width and a height that are smaller than a length of the second photonic nanobar, wherein the lengths of the plurality of first photonic nanobars and the lengths of the plurality of second photonic nanobars are different from one another.

Abstract: A photoluminescent or electroluminescent system and method of making a non-luminescent nanostructured material into such a luminescent system is presented. The method of preparing the luminescent system, generally, comprises the steps of modifying the surface of a nanostructured material to create isolated regions to act as luminescent centers and to create a charge imbalance on the surface; applying more than one polar molecule to the charged surface of the nanostructured material; and orienting the polar molecules to compensate for the charge imbalance on the surface of the nanostructured material. The compensation of the surface charge imbalance by the polar molecules allows the isolated regions to exhibit luminescence.

Abstract: A molded article is formed by molding a cycloolefin resin composition, in which the cycloolefin resin composition contains a cycloolefin resin and silica particles, the silica particles have an average primary particle size of 10 nm to 150 nm, the cycloolefin resin composition has a silica particle content of 15% by weight to 70% by weight, and the molded article has a linear expansion coefficient of 50×10?6/degrees (Celsius) or less in the temperature range of 0 degrees (Celsius) to 80 degrees (Celsius).

Abstract: A plasmonic optical device is provided operating in near ultra violet (UV) and visible wavelengths of light. The optical device is made from a substrate and nanoparticles. The nanoparticles have a core with a negative real value relative permittivity of absolute value greater than 10 in a first range of wavelengths including near UV and visible wavelengths of light, and a shell with an imaginary relative permittivity of less than 5 in the first range of wavelengths. A dielectric overlies the substrate, and is embedded with the nanoparticles. If the substrate is reflective, a reflective optical filter is formed. If the substrate is transparent, the filter is transmissive. In one aspect, the dielectric is a tunable medium (e.g., liquid crystal) having an index of refraction responsive to an electric field. The tunable medium is interposed between a first electrode and a second electrode.

Abstract: Provided are an optical member having abrasion resistance and transparency and a method of producing the optical member. The method of producing the optical member includes coating a coating material containing hollow particles and a solvent on a substrate and further coating a coating material containing a binder and a solvent to form a film in which the binder lies between the hollow particles; and then drying the film.

Abstract: An optical device has a deformable solid substrate, and a two dimensional array of metal particles which is carried by the substrate. The array provides a controlled separation between nearest-neighbour particles. Deformation of the substrate produces corresponding variation in the controlled separation such that the two dimensional array undergoes a transition between metallic and insulator surface reflectance.

Abstract: The described embodiments relate generally to cosmetic surfaces and associated treatments to alter a color of cosmetic surfaces. According to one embodiment, cosmetic ink configured to be applied to a cosmetic surface can include a suspension matrix configured to suspend a number of small particles in the suspension matrix. Each of the small particles of the is within a desired overall diameter to cause a user to perceive a desired color due to plasmon resonance of the small particles.

Abstract: A backlight unit for a liquid crystal display device including a liquid crystal panel, includes: a light source including a light-emitting diode (“ED”) which generates and emits light; and a light converting layer between the light source and the liquid crystal panel, spaced apart from the light source, and converting the light from the light source into white light and emitting the white light toward the liquid crystal panel. The light converting layer includes: semiconductor nanocrystals, and a barrier material which restricts penetration of moisture or oxygen.

Abstract: An optical upconverting nanomaterial includes a nanocrystal, a ligand layer directly bonded to the nanocrystal, and an optical antenna directly or indirectly bonded to the nanocrystal. The nanocrystal includes a transition metal-doped material exhibiting upconversion to optical wavelengths. The transition metal-doped material includes energy transfer facilitating transition metal dopants and (not necessarily distinct) emitter transition metal dopants, where an absorption spectrum of the energy transfer facilitating transition metal dopants overlaps with an emission spectrum of the optical antenna. The optical upconverting nanomaterial has at least one linear dimension (e.g., width or thickness) that is less than 150 nm in extent.

Abstract: A light extraction transparent substrate for an organic EL element includes a transparent supporting substrate; a diffraction grating having a first concavity and convexity layer having first concavities and convexities formed on a surface thereof, which is located on a surface of the transparent supporting substrate, and a microlens having a second concavity and convexity layer having second concavities and convexities formed on a surface thereof, which is located on a surface of the transparent supporting substrate. When a Fourier-transformed image is obtained by performing two-dimensional fast Fourier transform processing on a concavity and convexity analysis image obtained by analyzing the shape of each of the first and second concavities and convexities by use of an atomic force microscope, the Fourier-transformed image shows a circular or annular pattern substantially centered at an origin at which an absolute value of wavenumber is 0 ?m?1.

Abstract: Provided is an information storage medium using nanocrystal particles, a method of manufacturing the information storage medium, and an information storage apparatus including the information storage medium. The information storage medium includes a conductive layer, a first insulating layer formed on the conductive layer, a nanocrystal layer that is formed on the first insulating layer and includes conductive nanocrystal particles that can trap charges, and a second insulating layer formed on the nanocrystal layer.

Abstract: A photosensitive quantum dot including a quantum dot, and a plurality of photosensitive moieties that are bound to a surface of the quantum dot, wherein each of the photosensitive moieties includes silicon (Si) and a photosensitive functional group. Also disclosed are a composition for forming a quantum dot-containing pattern, where the composition includes the photosensitive quantum dot, and a method of forming a quantum dot-containing pattern using the composition.

Abstract: A quantum dot dispersed glass article is disclosed herein and associated articles, products, and methods of making thereof. In an aspect, a glass material can incorporate one or more quantum dot dispersed therein, wherein the one or more quantum dot luminesces upon excitation from an excitation source. In another aspect, the quantum dot can take a variety of shapes and sizes. In another aspect, the quantum dot can be water soluble. In yet another aspect, the quantum dot can be dispersed within one or more glass cavities.

Abstract: Provided are 3-dimensional standing type metamaterial structures and methods of fabricating the same. The 3-dimensional metamaterial structure includes a substrate; and a resonator, which includes a fixing unit fixed to the substrate; and a plurality of arms, which extend from the fixing unit and are curved upward on the substrate, wherein permittivity, permeability, and refractive index of the metamaterial structure in a predetermined frequency band differ from permittivity, permeability, and refractive index of the substrate. The resonator may be easily fabricated in MEMS/NEMS (micro-electro-mechanical system/nano-electro-mechanical system) processes.

Abstract: Methods and sensors for detecting the presence and/or concentration of an analyte are disclosed. In one aspect, a sensing element for use in a sensor is disclosed. The sensing element comprises a resonant cavity device configured to emit optical radiation at an initial power level, a sensing layer exhibiting an initial refractive index, and a detector. The sensing layer is configured to absorb or adsorb an analyte and, in response to absorbing or adsorbing the analyte, exhibit a modified refractive index that differs from the initial refractive index. The resonant cavity device is further configured to, in response to the sensing layer absorbing or adsorbing the analyte, emit optical radiation at a modified power level based on the modified refractive index. The detector is configured to detect the modified power level.

Abstract: Labels and methods of producing labels for use in clinical, analytical and pharmaceutical development assays are provided. Labels may comprise shape-encoded particles which may be coupled to ligands such as DNA, RNA and antibodies, where different shapes are used to identify which ligand(s) are present. Labels may also comprise reflectors, including retroreflectors and retroreflectors susceptible to analyte-dependent assembly for efficient homogeneous assays.

Abstract: The present invention provides light-emitting diode (LED) devices comprises compositions and containers of hermetically sealed luminescent nanocrystals. The present invention also provides displays comprising the LED devices. Suitably, the LED devices are white light LED devices.

Abstract: Embodiments of the present invention generally provide an inductively coupled plasma (ICP) reactor having a substrate RF bias that is capable of control of the RF phase difference between the ICP source (a first RF source) and the substrate bias (a second RF source) for plasma processing reactors used in the semiconductor industry. Control of the RF phase difference provides a powerful knob for fine process tuning. For example, control of the RF phase difference may be used to control one or more of average etch rate, etch rate uniformity, etch rate skew, critical dimension (CD) uniformity, and CD skew, CD range, self DC bias control, and chamber matching.

Abstract: An optical component, for example a lens, integrally formed of a nano/nano class nanocomposite optical ceramic (NNCOC) material. The constituent nanograin materials of the NNCOC material are selected to tailor the thermal and optical properties of the lens so as to provide a lens with a substantially constant focal length over an operating temperature range and/or an optical system in which the image position does not change appreciably over the operating temperature range.

Abstract: Quantum dot (QD) LEDs useful for plant, algael and photosynthetic bacterial growth applications. The QD LEDs utilizes a solid state LED (typically emitting blue or UV light) as the primary light source and one or more QD elements as a secondary light source that down-converts the primary light. The emission profile of the QD LED can be tuned to correspond to the absorbance spectrum of one or more photosynthetic pigments of the organism.

Abstract: A method is provided for preparing luminescent semiconductor nanoparticles composed of a first component X, a second component A, and a third component B, wherein X, A, and B are different, by combining B with X and A in an amount such that the molar ratio B:(A+B) is in the range of approximately 0.001 to 0.20 and the molar ratio X:(A+B) is in the range of approximately 0.5:1.0 to 2:1. The characteristics of these nanoparticles can be substantially similar to those of nanoparticles containing only X and B while maintaining many useful properties characteristic of nanoparticles containing only X and A; and can additionally exhibit emergent properties such as a peak emission energy less than that characteristic of a particle composed of XA or XB alone. This method is particularly applicable to the preparation of stable, bright nanoparticles that emit in the red to infrared regions of the electromagnetic spectrum.

Abstract: A method and apparatus for transmitting signals. An apparatus comprises a tube comprising a number of layers of carbon forming a wall of the tube. The number of layers of carbon has a number of optical properties configured to propagate an optical signal and a number of electrical properties configured to conduct an electrical signal.

Abstract: This invention is a photon-interactive Gaussian surface lens method means that converts incident photons from a single or a plurality of wide band gap semiconductor class light emitting diode dies, into a secondary emission of photons emanating from a composite photon transparent colloidal stationary suspension of quantum dots, high efficiency phosphors, a combination of quantum dots and high efficiency phosphors and nano-particles of metal, silicon or similar semiconductors from the IIIB and IVB Group of the Periodic Table and any nano-material and/or micro/nano spheres that responds to Rayleigh Scattering and/or Mie Scattering; and a plurality of quantum dots in communication with said nano-particles in said suspension. The patent teaches that utilizing this method means results in improved narrow pass-band of red, green, and blue photon efficiency over phosphor based conversion.

Abstract: Provided are solar cells and methods of forming the same. The solar cell includes an anti-reflection layer on a substrate, a first electrode on the anti-reflection layer, a photo-electro conversion layer on the first electrode, and a second electrode on the photo-electro conversion layer.

Abstract: An object is to provide a Raman scattering light enhancing device that provides a sufficiently high Raman scattering light enhancing effect and produces a highly sensitive Raman signal even by using an excitation light source having a low energy density. This Raman scattering light enhancing device includes a substrate, a high reflection layer that is formed on the substrate, a dielectric layer that is formed on the high reflection layer, and an enhanced electromagnetic field formation layer that is formed on the dielectric layer and includes a large number of fine silver particles. A gold film is formed on surfaces of the fine silver particles constituting the enhanced electromagnetic field formation layer.

Abstract: The present disclosure relates to a method for making a transparent carbon nanotube composite film. The method includes: (a) providing a transparent carbon nanotube film structure; (b) fixing the transparent carbon nanotube film structure on a supporting; (c) immersing the transparent carbon nanotube film structure with the supporting into a transparent polymer solution; and (d) removing the transparent carbon nanotube film structure with the supporting from the transparent polymer solution, thereby forming the transparent carbon nanotube composite film. A light transmittance of the transparent carbon nanotube composite film structure is higher than a light transmittance of the transparent carbon nanotube film structure.

Abstract: A tunable photonic crystal color filter and a color image display apparatus including the same. A tunable photonic crystal color filter includes a first electrode, a second electrode on the first electrode, and a medium disposed between the first electrode and the second electrode. The medium includes charged nanoparticles having a lattice structure in the medium. The first electrode and the second electrode are formed of a material having a difference between an oxidative over-potential and a reductive over-potential.

Abstract: An energy-efficient transparent solar film is presented. The solar film has a first film layer with metal nanostructures. The metal nanostructures have plasmon resonances in wavelength bands greater than, or both less than and greater than visible wavelengths, depending on size and shape. The metal nanostructures have no plasmon resonance at visible wavelengths. In another aspect, metal oxide nanocrystals are formed with the first film layer. The metal oxide nanocrystals have absorption in a band of wavelengths less than visible wavelengths, and absorption in a band of wavelengths greater than visible wavelengths. Also provided is a solar film window and fabricating method.

Abstract: Illustrative embodiments of hybrid transparent conducting materials and applications thereof are disclosed. In one illustrative embodiment, a hybrid transparent conducting material may include a polycrystalline film and a plurality of conductive nanostructures randomly dispersed in the polycrystalline film. In another illustrative embodiment, a photovoltaic cell may include a transparent electrode comprising polycrystalline graphene that is percolation doped with metallic nanowires, where the metallic nanowires do not form a percolation network for charge carriers across the transparent electrode.

Abstract: The present disclosure relates to optical stacks having nanostructure-based transparent conductive films and low diffuse reflection. Also described are display devices that incorporate the optical stacks.

Abstract: The present invention relates to a method for fabricating a thin film formed with a uniform single-size monolayer of spherical AZO nanoparticles. Because of its own advantages in cost and transparency, Al-doped ZnO (AZO) transparent conductive film is becoming the most commonly used transparent conducting oxide (TCO) replacement for solar cells. In this invention, a colloidal chemical means is adopted for enabling a chemical reaction between metal salts, water, and polyhydric alcohols at a room-temperature environment, and thereby, a process for fabricating spherical AZO nanoparticles in a diameter ranged between 100 nm to 400 nm according to different parameter configurations can be achieved while controlling the actual Al/Zn ratio to be ranged between 0.1% to 3%. In addition, a dip coating means is adopted for densely distributing the spherical AZO nanoparticles on a substrate into a monolayer close-packed structure.