48 results about "Electronic band" patented technology

The present invention is generally directed to nanocomposite thermoelectric materials that exhibit enhanced thermoelectric properties. The nanocomposite materials include two or more components, with at least one of the components forming nano-sized structures within the composite material. The components are chosen such that thermal conductivity of the composite is decreased without substantially diminishing the composite's electrical conductivity. Suitable component materials exhibit similar electronic band structures. For example, a band-edge gap between at least one of a conduction band or a valence band of one component material and a corresponding band of the other component material at interfaces between the components can be less than about 5 kBT, wherein kB is the Boltzman constant and T is an average temperature of said nanocomposite composition.

Systems, devices, and methods for wearable computer systems are described. A wearable heads-up display (“WHUD”) is implemented as a peripheral to a wearable electronic band worn on a limb of the user. The majority (or all) of the application storage and processing is performed on the band instead of on the WHUD, and therefore the WHUD does not include all of the hardware infrastructure necessary for application storage and processing. This significantly reduces the bulk of the WHUD and enables more aesthetically pleasing WHUD designs. Graphics processing is also performed on the band instead of on the WHUD. In some implementations, rasterized display data is wirelessly transmitted from the band to the WHUD using an ultra-wideband wireless communication scheme. Gesture-based control of content displayed by the WHUD is enabled by sensors on-board the band itself or by a third wearable component in communication with the band.

The invention provides a new class of photoconductive materials and devices, and methods for obtaining high internal photoconductive gain. The devices include a semiconductor or material with an electronic band gap provided in a confined geometry and which exhibits multi-exciton generation (MEG) when illuminated with photons with energies above the threshold for MEG. Due to carrier-carrier Coulombic interactions, multi-excitons within the confined material efficiently recombine via Auger recombination, in which a carrier from one exciton is excited to a higher energy level relative to the band edge. Carriers excited by Auger recombination are subsequently trapped by trap states that capture carriers excited high above the band edge more efficiently than carriers near the band edge. Carriers trapped by the trap states allow for the collection and recirculation of untrapped carriers of opposite charge when used as a photoconductive device, producing high internal photoconductive gain.

Vapor-liquid-solid growth of nanowires is tailored to achieve complex one-dimensional material geometries using phase diagrams determined for nanoscale materials. Segmented one-dimensional nanowires having constant composition display locally variable electronic band structures that are determined by the diameter of the nanowires. The unique electrical and optical properties of the segmented nanowires are exploited to form electronic and optoelectronic devices. Using gold-germanium as a model system, in situ transmission electron microscopy establishes, for nanometer-sized Au—Ge alloy drops at the tips of Ge nanowires (NWs), the parts of the phase diagram that determine their temperature-dependent equilibrium composition. The nanoscale phase diagram is then used to determine the exchange of material between the NW and the drop. The phase diagram for the nanoscale drop deviates significantly from that of the bulk alloy.

An antenna system having reduced back radiation is disclosed. The antenna system includes an antenna and ground plane. The antenna includes electro-textiles and is configured to operate in at least the frequency range between 1.1-1.6 GHz. The ground plane includes electro-textiles and is configured to operate as a frequency selective surface with electronic band gap characteristics to suppress edge and curved surface diffraction effects. In this system, the antenna and ground plane are configured to be located on a curved surface and to radiate with a directional radiation pattern having attenuated back lobes.

An optical device is provided having a solid state nonlinear material with a nanostructured extent, in at least one dimension, that is less than about 10 nm or that is at a temperature of less than about 77 K. An electronic band gap, EGap, of the material is at least about twice as large as an energy of a photon with a wavelength, λ, equal to an operational wavelength of the device. The material is characterized by a switching figure of merit, ξ, having a value that is at least about 2π. A dielectric structure is around at least one dimension of the nonlinear material in a geometric arrangement having a characteristic photonic band gap that at least partially overlaps the electronic band gap of the material. At least one waveguide is disposed at the dielectric structure in sufficient proximity with the material for coupling light to the material.

Disclosed is a photocatalyst, and methods for its use, that includes a photoactive material comprising a photonic band gap and an electronic band gap, wherein the photonic band gap at least partially overlaps with the electronic band gap, and an electrically conductive material deposited on the photoactive material.

The disclosed filter includes a medium base plate. Metal pasters covered on both sides of the said base plate are as a top surface and floor. Substrate integration wave-guide (SIW) on base plate is setup at the medium base plate, and electronic band gap is setup at floor. Input end and output end are connected to integrated wave-guide on same base plate respectively. Structure of electronic band gap is composed of compact type units of electronic band gap arranged in array in same plane. Advantages are: small size of integrated structure of electronic band gap with SIW in filter, easy to be integrated with other ICs, wide frequency selectivity, simple designing method, and possible to add number of identical unit of structure of electronic band gap to increase frequency selectivity.

Processes are presented for creating electronic banding compensation profiles for raster output scanner (ROS) devices by printing and scanning a test pattern having a series of strips extending along a process direction and spaced from one another along a cross process (fast scan) direction, analyzing the scanned data to determine facet-specific banding errors corresponding to individual strips, and selectively adjusting banding correction profiles to counteract the banding errors.

The invention discloses a method for regulating an electronic band gap in SiC-based epitaxial graphene. The method comprises the following steps of (a) calculating the damage distribution as well as electronic and nuclear energy loss distribution of irradiation ions in SiC crystals through SRIM software, and calculating an energy band structure of defected graphene; (b) irradiating an SiC-based epitaxial graphene sample by using an ion beam to form epitaxial graphene with the defected structure; (c) respectively observing metallographic structures of irradiated and non-irradiated graphene by using a metallographic microscope, and observing the surface folding changes of the irradiated and non-irradiated graphene by using a scanning electron microscope; (d) calculating the lattice defect amount of the graphene sample under different irradiation conditions through the formula as shown in the specification; and (e) testing the band gap in the epitaxial graphene by virtue of an infrared spectrum to achieve the aim of regulating the band gap. A controllable defected structure is generated in the graphene by using an ion irradiation method, furthermore, the electronic band gap in the graphene is regulated, and therefore, the defects of poor controllability and repeatability in the traditional process are overcome.

The present disclosure provides a photovoltaic device comprising a copper-based light-absorbing material and a first material electrically coupled to the light-absorbing material and forming a p-n junction with the light- absorbing material. The device further comprises an intermediate material arranged between the first material and the light-absorbing material. The intermediate material acts to reduce the minority carrier recombination rate at the region between the light-absorbing material and the first material and / or optimise the electronic band alignment in the photovoltaic device.

An optical pre-amplifier is described. The optical pre-amplifier has an optical amplifier region that has a semiconductor active region having a direct electronic band gap with a conduction band edge. The semiconductor active region is embedded within a photonic crystal having an electromagnetic band gap having photon energies overlapping the energy of the conduction band edge of the electronic band gap such that spontaneous emission of photons in the semiconductor active region is suppressed.

The invention provides a wavelength demodulating device and method for a fiber bragg grating sensor network. According to the wavelength demodulating device and method, optical frequency shifters are utilized for modulating frequencies of two beams of interference light respectively. The method comprises the steps that the two optical frequency shifters are adopted to conduct independent linear frequency modulation on two ways of detection light, tuning of the bragg grating reflection light interference beat frequency is achieved by adjusting the frequency modulation difference value of the two optical frequency shifters, bragg grating reflected signals to be demodulated are obtained through an electronic band-pass filter, and the bragg grating sensor network is demodulated under the situation of spectral overlapping. Due to the fact that a Fourier transform algorithm used in an existing traditional frequency domain interference method does not need to be adopted, the real-time performance and the response speed of a system are improved, complexity of a system signal processing device is reduced, and then the system cost is reduced.

The invention discloses an application of a graphite-like carbon nitride nano material as an electrochemical modified electrode material in detection of methyl mercury. During application, the detection method comprises the steps of putting a to-be-used nano composite material into deionized water to form a suspension; fully coating the outer surface of the electrode, and air-drying to obtain an electrochemically modified electrode, taking the electrochemically modified electrode as a working electrode in a three-electrode system of an electrochemical workstation, and detecting the concentration of the methyl mercury ions in the to-be-detected liquid under the power-on state of the three-electrode system. According to the invention, the dispersibility and high surface area can be provided,the electronic band gap is adjusted, the ionic conductivity is improved, the defects of low sensitivity and high detection limit of the existing electrochemical detection technology on methyl mercuryion detection are improved, and the detection limit is far lower than a standard value specified by WHO.

An electronic band-aid comprises a long-tubular casing, wherein a medicine outlet is formed in the bottom. The electronic band-aid is characterized in that a medicine tube is arranged in the casing and filled with a liquid band-aid, an infrared ray therapeutic apparatus is further arranged in the casing, and further, the liquid band-aid comprises polyvinyl acetal, ketone oil, chitin, ethanol, acetone, nano-silver, glycerol, dibutyl ester, peppermint oil, medical stone powder and distilled water. The electronic band-aid has the advantages that characteristics of low applicability and slow healing in a traditional wound treatment mode are changed, bacterial invasion is better prevented, the electronic band-aid is applicable to more wounds and a wider use range, and meanwhile, in combination of the infrared ray therapeutic apparatus, the wound can be stimulated to heal better and faster.

The invention relates to the application field of finance enterprise bill management, and specifically relates to a bank bill management method based on an RFID technology. An RFID electronic band label, an RFID access door, a hand-held terminal and a management system are provided. An RFID chip is used for managing bank bills, so that the storage of the bank bills is convenient, rapid and accurate bank bill searching is realized, and a large amount of manual labor is saved; the interface open degree of the system is high, so that the linkage among existing fire-fighting facilities and antitheft facilities of an enterprise is facilitated; in addition, a consulting system of the bank bills is provided with corresponding log counterfoils, so that the safety of the bank bills is ensured to a certain degree.

Computer-aided methods for simulating confined nanodevices are disclosed. In example implementations, atomic-scale model of the nanodevices are generated so that dimensions and materials are specified. Then, band structures which comprise wave functions and Eigen energies are calculated using First Principles Methods (FPM). Effective mass modeled which comprise wave functions and Eigen energies are generated. After that, spatial wave functions of the calculated FPM band structures are mapped to the generated effective mass band structures wave functions by considering global behavior. In response to the mapping, generated effective mass models are fitted to calculated FPM energies so that approximate electronic band structures of the confined nanodevices are modeled. Computer programs for carrying out the methods, data media and computer systems are also disclosed.

Raster Output Scanners and printing systems are presented along with methods for mitigating banding in printing systems, in which electronic banding compensation is employed using cross-process direction light source intensity banding correction profiles tailored to corresponding reflective facets of a rotating polygon.

A system includes: a printed circuit board having a plurality of conductive traces; a processing device coupled to the printed circuit board and in electrical communication with the plurality of conductive traces; a first memory module and a second memory module in electrical communication with the plurality of conductive traces and sharing channels of the conductive traces, wherein the first memory module is physically more proximate to the processing device than is the second memory module; and an electronic band gap (EBG) structure physically disposed in an area between the first memory module and the second memory module.

The invention provides a method and device for regulating and controlling nonlinear optical properties of transition metal sulfide. The method comprises the steps of replacing one atom in a transitionmetal sulfide structure with a calibration atom, and obtaining a new atom lattice; optimizing lattice parameters of the new atomic lattice to obtain optimized lattice parameters; sequentially performing self-consistent calculation and non-self-consistent calculation according to the optimized lattice parameters to obtain preprocessed lattice parameters, and determining an electronic band gap according to the preprocessed lattice parameters; performing non-self-consistent calculation according to the preprocessed lattice parameters to obtain a wave function, and performing GW-BSE calculation according to the wave function to obtain an optical band gap; determining a band gap difference according to the optical band gap and the electronic band gap, and determining a correction parameter according to the band gap difference; and performing simulation according to the correction parameters and the control parameters to obtain a plurality of second-order nonlinear non-zero response spectra. According to the technical scheme, nonlinear optical properties of the transition metal sulfide are improved, and the complexity of the calculation simulation process is reduced.

Optical thin film designs are provided that achieve significantly improved laser damage thresholds and ultra-low-loss. These advances may be achieved by utilizing materials with electronic band gaps and refractive indices that are higher than those that are conventionally used.

The invention relates to an intelligent bus electronic-station-board system. The intelligent bus electronic-station-board system comprises an audio monitor, at least one camera, a video encoding-and-decoding module, a hard disc, a 3G router, a main control panel, an electronic band control card, at least one electronic band, a power source control card, an LED information display screen, an air fan, an LED illuminating system and at least one voice broadcasting device. The video encoding-and-decoding module is connected with the audio monitor, the cameras and the hard disc and connected with the 3G router through a local area network; the 3G router is connected with the main control panel through a local area network; the main control panel is connected with the LED information display screen, the power source control card and the electronic band control card through an RS485 bus; the output end of the electronic band control card is connected with the input ends of the electronic bands; the main control panel is connected with the voice broadcasting devices through an RS232 serial bus; the power source control card supplies power to the LED information display screen, the air fan and the LED illuminating system.

Systems, devices, and methods for wearable computer systems are described. A wearable heads-up display (“WHUD”) is implemented as a peripheral to a wearable electronic band worn on a limb of the user. The majority (or all) of the application storage and processing is performed on the band instead of on the WHUD, and therefore the WHUD does not include all of the hardware infrastructure necessary for application storage and processing. This significantly reduces the bulk of the WHUD and enables more aesthetically pleasing WHUD designs. Graphics processing is also performed on the band instead of on the WHUD. In some implementations, rasterized display data is wirelessly transmitted from the band to the WHUD using an ultra-wideband wireless communication scheme. Gesture-based control of content displayed by the WHUD is enabled by sensors on-board the band itself or by a third wearable component in communication with the band.

The invention belongs to the field of miniature electronic biomedical equipment, and particularly discloses an electronic band-aid, which comprises a flexible substrate layer, a conductive layer and aflexible packaging layer. The conductive layer is arranged between the flexible substrate layer and the flexible packaging layer; the conducting layer is a flexible circuit, a plurality of LED elements capable of emitting blue-violet light are arranged on the flexible circuit, and the flexible circuit is connected with a micro battery and a control switch; an adhesive layer is arranged on the surface of the side, making contact with human skin, of the flexible substrate layer. The flexible substrate layer, the conductive layer and the packaging layer can be bent, folded and stretched to guarantee that the band-aid can be better attached to a wound; the electronic band-aid is small in size and convenient to carry; and after the LED element emits light, wound tissue growth can be promoted to achieve the purpose of accelerating wound healing. The invention further discloses a preparation method of the electronic band-aid, and the preparation method is simple in preparation process and easy to popularize.

Disclosed are methods and systems for compensating for process direction banding associated with a document processing system including a ROS. According to one exemplary embodiment, a ROS driver uses a plurality of beam delay / advance values to compensate for banding caused by an interaction of a halftone pattern and process direction density variations associated with the ROS.