322 results about "Material Absorption" patented technology

A method of determining a portion of light at a given wavelength which is incident on a material that is absorbed by the material, the method comprising: transmitting a pulse of light at the given wavelength so that the pulse traverses a path through the material; generating a first signal responsive to light in the light pulse that traverses the path length without being absorbed by the material; generating a second signal responsive to energy that the material emits responsive to a portion of the light from the light pulse that is absorbed by the material as the light pulse traverses the path; and using the first and second signals to determine the absorbed portion.

Indentation patterns in microwave packaging materials can enhance the baking and browning effects of the microwave packaging materials on food. The indentation patterns can provide venting to either channel moisture from one area of the food product to another, trap moisture in a certain area to prevent it from escaping, or channel the moisture completely away from the food product. The indentation patterns can cause the microwave packaging material underneath a food product to be slightly elevated above the cooking platform in the base of a microwave. The indentation patterns can lessen the heat sinking effect of the cooking platform by providing an air gap for insulation. Elevating the base of the microwave packaging material further allows more incident microwave radiation to propagate underneath the microwave packaging material to be absorbed by the food product or by microwave interactive materials in the microwave packaging material that augment the heating process.

A method for a layer-wise manufacturing of a three-dimensional object has a first step of providing a layer of a material in powder form or a liquid material on a support or a layer that has already been solidified at selected positions previously and a second step of directing a focussed photon or particle beam (8′) selectively at selected positions of the layer. In the second step, the photon or particle beam is selected such that it brings about a change of the absorption of the material when hitting the layer. After the termination of the second step, a third step is carried out, in which the layer is irradiated by means of electromagnetic radiation (18′) such that the material is homogenously solidified at those positions of the layer that correspond to the cross-section of the object to be formed.

The present disclosure relates to signal processing such as digital watermarking and data hiding. A sparse or dense digital watermark signal can be conveyed with a narrow-band absorption material corresponding to a center wavelength of a Point of Sale (POS) barcode scanner. The POS barcode scanner typically captures 2D imagery. Since the narrow-band absorption material absorbs over a narrow-band it is relatively imperceptible to the Human Visual System (HVS) but can be seen by the POS scanner.

The invention provides a detector comprising a metamaterial absorber and a micro-bolometer arranged to detect terahertz (THz) radiation. The metamaterial absorber can absorb multiple frequency bands, from the infrared and the THz regions of the electromagnetic spectrum. The detector is scalable to be suitable for use in a focal plane array.The invention also provides a hybrid of a plasmonic filter, e.g. for optical radiation, and a metamaterial absorber for terahertz (and / or infrared) radiation, to create a single material capable of absorbing narrow band terahertz radiation and filtering radiation in another part of the spectrum, e.g. optical radiation. Such material has great potential in future imaging technology where hybridisation can maximise the spectral information density of an optical system.

The invention discloses a broadband THz metamaterial absorber based on multi-resonant absorption superposition, belongs to a THz absorber in the field of metamaterials and electromagnetic functional technology, and aimed at that the broadband THz metamaterial absorber includes an upper patterned functional material layer, an intermediate medium layer and a lower metal reflective layer; the upper patterned functional material layer is formed by arranging metamaterial unit structures, each metamaterial unit structure includes a circular ring structure in which four parallel openings and a cross arm are disposed, and four connecting arms of each cross arm are connected with four ARC segments of each circular ring structure; the lattice period of a metamaterial unit structure array is a 10um to 100um, each metamaterial unit structure has a line width of 0.5um to 10um, the arm length x of each connecting arm is 3um to 50um, and the width d of each parallel opening is 0.5um to 50um. The invention does not require complicated procedures, a difficult process and high production cost to achieve the purpose of terahertz absorption band spread.

Applicant's present invention is a composite scintillator for neutron detection comprising a matrix material fabricated from an inorganic sol-gel precursor solution homogeneously doped with a liquid scintillating material and a neutron absorbing material. The neutron absorbing material yields at least one of an electron, a proton, a triton, an alpha particle or a fission fragment when the neutron absorbing material absorbs a neutron. The composite scintillator further comprises a liquid scintillating material in a self-assembled micelle formation homogeneously doped in the matrix material through the formation of surfactant-silica composites. The scintillating material is provided to scintillate when traversed by at least one of an electron, a proton, a triton, an alpha particle or a fission fragment. The scintillating material is configured such that the matrix material surrounds the micelle formation of the scintillating material. The composite scintillator is fabricated and applied as a thin film on substrate surfaces, a coating on optical fibers or as a glass material.

An electrochromic display comprises electrochrome pixels (10) which comprise at least a first electrochrome material (EL1) and a second electrochrome material (EL2) between two electrodes (E1, E2). Each of the electrochrome materials (EL1, EL2) has two stable states, in one state at a first voltage across the electrochrome pixel (10) the material is transparent, in the other state at a second voltage across the electrochrome pixel (10) the material absorbs a color and thus is colored. The material changes from the one state to the other state by applying the appropriate one of the first or the second voltage. The amount of change of the absorption of the color depends on the time the appropriate voltage is applied. The first electrochrome material (EL1) changes from a transparent state to a color absorbing state for at least partly absorbing a first color when a pixel voltage (VP) across the electrochrome pixel has the first value (V1). The first electrochrome material (EL1) changes from the color absorbing state to the transparent state when the pixel voltage (VP) has a second value (V2) which has a polarity opposite to the first value (V1). The second electrochrome material (EL2) changes from a transparent state to a color absorbing state for at least partly absorbing a second color different than the first color when the pixel voltage (VP) has a third value (V3) which has an absolute value smaller than an absolute value of the first value (V1). The second electro-chrome material (EL2) changes from the color absorbing state to the transparent state when the pixel voltage (VP) has a fourth value (V4) which has a polarity opposite to the third value (V3). An absolute value of the fourth value (V4) is smaller than an absolute value of the second value (V2).

A liquid crystal display backlight comprises: at least one blue light emitting diode (LED) operable to contribute blue light to white light generated by the backlight; a phosphor material which absorbs a portion of the blue light and emits green light which contributes green light to the white light generated by the backlight; and at least one red LED operable to contribute red light to the white light generated by the backlight. In one arrangement the red LED is replaced with a second phosphor material which absorbs a portion of the blue light and emits red light which contributes to the white light generated by the backlight. Many packaging configurations are possible.

Indentation patterns are scored in microwave packaging materials to enhance the baking and browning effects of the microwave packaging materials on food products. The indentation patterns provide venting to either channel moisture from one area of the food product to another, trap moisture in a certain area to prevent it from escaping, or channel the moisture completely away from the food product. The indentation patterns cause the microwave packaging material underneath a food product to be slightly elevated above the cooking platform in the base of a microwave. The indentation patterns lessen the heat sinking effect of the cooking platform by providing an air gap for insulation. Elevating the base of the microwave packaging material further allows more incident microwave radiation to propagate underneath the microwave packaging material to be absorbed by the food product or by microwave interactive materials in the microwave packaging material that augment the heating process.

A mark forming method for a moving body is disclosed. The method includes the steps of forming a second material layer, which scatters second wavelength light by being dispersed a first material that has a light absorbing property for first wavelength light therein, on a moving body; irradiating the first wavelength light on a part of the second material layer, making the first material at the part absorb the first wavelength light, and changing a scattering property of the part of the second material layer; and forming a mark whose scattering property for the second wavelength light is different in the part.

An array of Geiger-mode avalanche photodiodes is formed in a die and includes: an internal dielectric structure, arranged on the die; and an external dielectric region arranged on the internal dielectric structure. The external dielectric region is formed by an external material that absorbs radiation having a wavelength that falls in a stop-band with low wavelength and transmits radiation having a wavelength that falls in a pass-band with high wavelength, at least part of the pass-band including wavelengths in the infrared. The internal dielectric structure is formed by one or more internal materials that substantially transmit radiation having a wavelength that falls in the stop-band and in the pass-band and have refractive indices that fall in an interval having an amplitude of 0.4. In the stop-band and in the pass-band the external dielectric region has a refractive index with the real part that falls in the above interval.

The invention discloses a broadband terahertz metamaterial absorber based on L-shaped structures and belongs to the technical field of metamaterials and electromagnetic function materials. The broadband terahertz metamaterial absorber comprises a metal reflection layer, a dielectric layer and a metal pattern layer, the metal reflection layer is a continuous metal thin film, thickness of the metal reflection layer is larger than skin depth of working terahertz wave, the dielectric layer is positioned between the metal reflection layer and the metal pattern layer and is a silicon dioxide thin film, the metal pattern layer is formed by periodically arranging the L-shaped unit metamaterial structures, and each L-shaped unit metamaterial structure is formed by connecting a horizontal arm and a vertical arm which are perpendicular to each other. By reasonably designing geometric size and lattice period of the L-shaped structures and thickness of the dielectric layer in the middle, the characteristic that electromagnetic waves vertically coming to the surface of a metamaterial are absorbed completely can be realized. The broadband terahertz metamaterial absorber is simple in graph pattern and needless of stacking of multiple layers of materials, has characteristics of wide frequency band and high absorptivity and can be used for an electromagnetic wave collecting and detecting device.

Novel spectroscopy techniques using entangled photons are disclosed. In one technique, entangled photons are directed to a sample of interest, while the photons with which they are entangled are resolved according to frequency. The photons transmitted by or reflected from the sample and the frequency-resolved photons are detected. Such detection may be by way of an electronic coincidence counter or a biphoton sensitive material, which absorbs entangled photons while allowing other photon pairs to pass. Detection information is used to derive spectroscopic properties of the sample. In another technique, a Fourier transform spectroscopy technique using entangled photons is disclosed. Entangled photons are directed to a sample, while the photons with which they are entangled are directed to a Michelson interferometer. The photons transmitted by or reflected from the sample and the photons leaving the Michelson interferometer are detected. Such detection may be by way of an electronic coincidence counter or a biphoton sensitive material. Detection information is used to derive spectroscopic properties of the sample.

An array of Geiger-mode avalanche photodiodes is formed in a die and includes: an internal dielectric structure, arranged on the die; and an external dielectric region arranged on the internal dielectric structure. The external dielectric region is formed by an external material that absorbs radiation having a wavelength that falls in a stop-band with low wavelength and transmits radiation having a wavelength that falls in a pass-band with high wavelength, at least part of the pass-band including wavelengths in the infrared. The internal dielectric structure is formed by one or more internal materials that substantially transmit radiation having a wavelength that falls in the stop-band and in the pass-band and have refractive indices that fall in an interval having an amplitude of 0.4. In the stop-band and in the pass-band the external dielectric region has a refractive index with the real part that falls in the above interval.

A light apparatus is capable of emitting light of multiple wavelengths using a nanometer fluorescent material. The light apparatus comprises an initial light source that emits initial color light. The initial light source is covered with a transparent film member; and the inside or the surface of the film member, or the initial light source, is coated with at least one nanometer fluorescent material. The nanometer fluorescent material absorbs the initial color light and gets excited, and in the excitement it emits fluorescent light which is different from the initial color light. The initial color light and the fluorescent light combine to form light of multiple wavelengths, and the light of multiple wavelengths is emitted by the light apparatus. Besides, a combination of nanometer fluorescent materials of various particle sizes enables the emission of multiple-wavelength light of various dominant wavelengths.

Described herein is a method and system for providing a countermeasure against laser detection systems using nanocomponent material that is tailored to cloak or obscure a target from detection by transmitted laser radiation. The nanodot material absorbs and / or down-converts the transmitted laser radiation. Similarly, described herein is a method and system for providing a countermeasure against laser systems intended to blind a target through the use of a specifically engineered nanocomponent material for absorbing and / or down-converting the radiation from the laser system.

A gamma correction LCD panel and a fabrication of the same are provided. In the method, a lower substrate is firstly painted with a photo-alignment material. An exposing step is then introduced to have the photo-alignment material absorbed different amounts of light exposure so as to create various photo-aligning effects with respect to RGB pixel devices. The lower substrate is then assembled with an upper substrate and has an LC layer inter-filled. Upon such an arrangement, the LC layers with respect to RGB illumination can be thus provided with various transparencies for further adjust the RGB gamma curves individually.

The invention discloses a honeycomb sound-absorbing panel and a production process thereof, which comprises a three-layer structure, the middle layer is a hexagonal honeycomb core, the upper surface of the hexagonal honeycomb core is provided with a supporting sheet; The invention fills the hexagonal honeycomb cavity with sound-absorbing materials such as filling the hexagonal honeycomb cavity, and the sound wave passes through the microporous aluminum plate and is absorbed by the sound-absorbing material in the hexagonal honeycomb core to achieve the sound-absorbing effect, and can be used for sound-absorbing ceilings and walls in public places. Such as the ceilings and walls of airport waiting halls, stadiums, conference halls and other places, the noise reduction coefficient is high, which can reach more than 0.8, and it can be used as a large-area wide-slab ceiling. It is beautiful, light in weight and no deformation.

A fine electrode and wiring pattern with a good adhesive property is easily formed using a water-based solution easy to handle and small in environmental load, thereby improving a stability of a manufacturing process of an image-forming apparatus in the case where the water-based solution is used in the manufacturing process. A base pattern is formed using a base pattern forming material for electrode and wiring material absorption which is a water-based solution containing a water-soluble photosensitive resin component and a water-soluble metallic compound including rhodium, bismuth, ruthenium, vanadium, chromium, tin, lead, or silicon. An organic metallic compound is absorbed in the base pattern and then baking is conducted to form electrodes and wirings.

The present invention relates to process for recycling a source substrate that has a surface region and regions in relief on the surface region, with the regions in relief corresponding to residual regions of a layer of the source substrate that were not being separated from the rest of the source substrate during a prior removal step. The process includes selective electromagnetic irradiation of the source substrate at a wavelength such that the damaged material of the surface region absorbs the electromagnetic irradiation. The present invention also relates to a recycled source substrate and to a process for transferring a layer from a source substrate recycled for this purpose.

The method includes following steps: (1) aligning chip with close over and making plastic parts to be bonded contact tightly; (2) guiding laser beam to penetrate through transparent plastic layer to reach the location to be bonded, laser irradiation making plastic layer and coating layer be melted; (3) controlling time and intensity of laser energy, making congruent melting between two materials. The device includes laser light source system, laser beam transformation system, workpiece alignment platform, offset table, servo controller and microcomputer main control system. The advantages of the invention are fast heating up and small heat affected zone, easy to be controlled by computer, high efficiency and reliability.

The invention discloses a feeding device of a flexible printed circuit (FPC) board and a keyboard base plate automated assembly system. The feeding device of the FPC board comprises a lifting material platform, a lengthways material moving mechanism and a material absorption frame which is connected with a sliding table, wherein a material box which is used for arranging the FPC board in a stack mode, the lengthways material moving mechanism comprises a lengthways slide and the sliding table which is in sliding connection with the slide, and the material absorption frame is arranged above the lifting material platform. By the adoption of the lifting material platform, the fact that the FPC board with multiple layers automatically feed the material to the position is achieved, only the whole box is needed to be changed, in the process of a robot continue assembling, the change of the material box of the FPC board has no need to be operated in a machine stopped state, reloading time is saved, and the production efficiency is improved. The keyboard under plate automated assembly system achieves assembling of each element by the adoption of the robot, the quantity of automatic control unit is reduced, and the floor area of the whole automated assembly system is benefitted to be reduced.

The invention relates to organic polymer compound technical field, and provides a bi-color antibacterial EVA footwear and a preparation method thereof, two different colors of antibacterial EVA material grains are prepared from raw material EVA, ethylene-butene copolymer, 1, 2-polybutadiene, an antibacterial agent, chlorinated polyethylene, a foaming agent, a crosslinking agent, zinc stearate, stearic acid, a wear-resisting agent, talcum powder and a pigment by smelting, open milling and granulation, two different colors of antibacterial EVA material grains are respectively pouring into different material absorption barrels of an EVA injection machine table for once ejection to obtain the bi-color antibacterial EVA footwear, the echerichia coli and staphylococcus aureus antibacterial rates of the bi-color antibacterial EVA footwear are more than 99%, the bi-color antibacterial EVA footwear has good water-proof weather-proof lasting antibacterial properties, has the characteristics of light weight, good comprehensive performance, high production efficiency, high product qualified rate and the like, and is especially suitable for production of sandals, slippers, indoor shoes and other EVA shoes which are in direct contact with human skin, and is lightweight and comfortable, and cost-effective.

The invention relates to an automatic fetching device of an injection molding machine, which comprises an injection molding machine frame, wherein the machine frame is provided with an injection device; a fixed die plate on the machine frame is connected with a movable die plate and a back die plate through guide posts; the fixed die plate and the movable die plate are respectively provided with an injection die; a die cavity is arranged in the injection die; a fetching plate is arranged in the machine frame; a material absorption device and a push-out device are arranged in the fetching plate; the fetching plate is driven by an elevating gear; and the elevating gear is installed on a steady rest. The invention is characterized in that the elevating gear comprises a fixed rack arranged inthe fixed rack and an elevating guide rail, the fetching plate is connected with the elevating guide rail, one side of the fetching plate is provided with a movable rack, and the movable rack and thefixed rack mesh with the elevating gear driven by power. In the scheme of the invention, the elevation of the fetching plate is controlled by a multiple-path mechanism, which is formed by that the movable rack and the fixed rack mesh with the elevating gear, and the stroke of the fetching plate can be multiplied by twice or more than twice; and thus, the invention reduces the occupation space, decreases the height of the machine frame, has a high elevation speed, shortens the time and enhances the work efficiency.

The invention discloses a sulphide electron capture luminous material, which comprises a ZnS substrate material, wherein main activating agents containing Pb and Cu acid compounds are added into the ZnS substrate material, at least one kind of co-activating agents containing Sm, Eu, Er, Yb and Mn acid compounds is added into the ZnS substrate material, the mixture is dried after being uniformly mixed, and high-temperature sintering is carried out in protective atmosphere. After ultraviolet ray absorption, the materials have momentary sunset glow, and can generate green light under the stimulation of infrared rays between 800 and 2000 nm. The electron capture luminous material of the invention can be used for detecting, tracking, checking and identifying invisible near infrared light. The invention can be widely applied to the multi-disciplinary technical fields such as near infrared laser detection, laser light spot display, optical fiber communication indication, optical information storage, X-ray image processing, infrared imaging and the like.

The invention relates to a preparation method of an intelligent vibration absorption device combining passive damping with active damping. In the preparation method, part of mechanical energy is absorbed by utilizing a damping material in the passive damping; an active damping intelligent structure which is based on a piezoelectric effect and consists of a sensor, a driver, a collection card, a controller, a driving power supply and a real-time control system is utilized in the active damping; the effective control on vibration is realized, wherein the sensor and the driver are adhered onto the surface of a passive damping material and are connected with the controller; the sensor is connected with the collection card; the driver is connected with the driving power supply; and the collection card, the driving power supply and the controller are connected with the real-time control system. The device comprises the following preparation steps of: preparing in a prior period, manufacturing a molded passive damping material, adhering and constructing the active damping intelligent structure, and adhering the side of the passive damping material, which is not adhered to a piezoelectric ceramic, to a position which needs vibration absorption. By using the intelligent vibration absorption device, the intelligent control on the vibration generated when various machines run can be realized, and the vibration absorption effect is enhanced.

The invention discloses a high heat-conducting wave-absorbing heat-dissipation composite material. The composite material is prepared by using 5-15 parts by weight of organic resin, 10-30 parts by weight of heat conducting agent, 50-70 parts by weight of magnetic powder, 1-10 parts by weight of 60-90% ethanol, 1-5 parts by weight of water and 1-5 parts by weight of dispersing agent. The heat conducting agent having excellent heat transferring property is compounded with the organic resin, and therefore the heat transferring and heat dissipation properties of the matrix material of the composite material are improved; the wave absorbing property of the system is improved due to the use of the ferrite wave absorbing material having the characteristics of high absorbed frequency, high absorptivity, thin matching thickness and the like; and the high heat-conducting, wave-absorbing heat-dissipation composite material disclosed by the invention has high absorptivity to electromagnetic wave in wider frequency bands, and has the properties of light weight, temperature resistance, moisture resistance, corrosion resistance as well as good heat conducting property.