45 results about "Absorption radiation" patented technology

The present disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of three-dimensional printing. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a ductility agent. The fusing agent can include water and electromagnetic radiation absorber. The electromagnetic radiation absorber can absorb radiation energy and convert the radiation energy to heat. The ductility agent can include water, a water-soluble pore-generating compound that chemically reacts at an elevated temperature to generate a gas, and a plasticizer. The plasticizer can have formula (I) wherein n is an integer ranging from 3 to 8; or formula (II) wherein m is an integer ranging from 3 to 8.

The present disclosure describes multi-fluid kits for three-dimensional printing, materials kits for three-dimensional printing, and methods of making three-dimensional printed articles. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a pore-promoting agent. The fusing agent can include water and a radiation absorber. The radiation absorber can absorb radiation energy and convert the radiation energy to heat. The pore-promoting agent can include water and a water-soluble pore-promoting compound. The pore-promoting compound can chemically react at an elevated temperature to generate a gas.

A lightweight radiation shielding material. A carbon nanotube forest is embedded in a matrix comprising nanoparticulates, such as nanoparticles, carbon nanotubes, or graphene nanosheets. The nanoparticulates can be low atomic number (low-Z) or high atomic number (high-Z). The matrix can be a solidified polymer, epoxy, resin, or ceramic precursor, for example silicon carbide. The radiation shield can shield an object from radio frequency interference (RFI), lightning, electromagnetic interference (EMI), an electromagnetic pulse (EMP), gamma rays, X-rays, neutrons, and / or protons. The nanoforest is disposed on a conductive base with sufficient in-plane electrical conductivity to provide an effective conductive path for currents induced by radiation absorption. The base can be a second nanoforest comprising horizontally-oriented carbon nanotubes, which makes the shield particularly lightweight, as low as 10% of the mass of aluminum that provides equivalent shielding. The base can be adhered to an object to be shielded.

An optoelectronic semiconductor body with a semiconductor layer sequence (2) based on a lll-V compound semiconductor material is specified, wherein: - the semiconductor layer sequence (2) comprises an n-doped layer (21) doped with a group VI dopant; - the semiconductor layer sequence (2) comprises an active region (20) configured to emit and / or absorb radiation; - the semiconductor layer sequence (2) comprises an interlayer (23) between the active region (20) and the n-doped semiconductor layer (21); and - the interlayer (23) comprises phosphorus (P) and at least one further group V material, preferably arsenic (As). An optoelectronic semiconductor chip (1) comprising the same is also specified. Finally, methods of producing the same are also specified.

The present disclosure includes a multi-fluid kit for three-dimensional printing. The multi-fluid kit can include a fusing agent comprising water and a radiation absorber that absorbs radiation energy and converts the radiation energy to heat, an acidic agent having a pH from about pH 1 to about pH 6.9 that includes water and an acidic component, and a pore-promoting agent including water and a pore-promoting compound. The pore-promoting compound can chemically react with the acidic component to generate a gas, and can be selected from sodium bicarbonate, potassium bicarbonate, or a combination thereof.

This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of making three-dimensional printed articles. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent, a first reactive agent, and a second reactive agent. The fusing agent can include water and a radiation absorber. The radiation absorber can absorb radiation energy and convert the radiation energy to heat. The first reactive agent can include water and a dissolved first pigment reactant. The second reactive agent can include water and a dissolved second pigment reactant. The second pigment reactant can be reactive with the first pigment reactant to form a water-insoluble pigment.

A mirror arrangement, such as for a lithography system, comprises: a plurality of mirror elements for reflecting radiation; a plurality of carrier elements, which each carry one of the mirror elements; and a mount arrangement having insert openings formed in each case to accommodate a respective one of the carrier elements, with the plurality of carrier elements, which each carry one of the mirror elements, being accommodated in the insert openings of the mount arrangement. For absorbing radiation, at least one of the insert openings does not accommodate a carrier element and / or, for absorbing radiation, at least one of the insert openings accommodates a dummy carrier element which does not carry a mirror element.

The utility model discloses a radiation protection robot and back scattering inspection equipment. The radiation protection robot includes: a first wheel disposed at a bottom of the radiation protection robot to allow the radiation protection robot to move; a shielding device capable of reflecting and / or absorbing radiation; and a plurality of radiation sensors for sensing radiation. A plurality of radiation sensors are mounted in a plurality of orientations on an outer periphery of a radiation protection robot so as to be able to receive radiation irradiated toward the radiation protection robot from any direction around the radiation protection robot. The radiation protection robot is configured to move through self-driving of the first vehicle, so that the radiation protection robot moves towards an area where the radiation dose value sensed by the radiation sensor is increased, and radiation propagation is shielded through the shielding device.

Method for producing an optoelectronic semiconductor component (100) comprising the steps: A) Providing a semiconductor chip (1) produced by singulating a wafer, wherein - the semiconductor chip (1) comprises a substrate (10) and a semiconductor layer sequence (11) with an active layer (12) applied to a main side (110) of the substrate (10), - the semiconductor layer sequence (11) has exactly one active region (13) for the emission or absorption of radiation and a sacrificial region (14) arranged next to it in the direction parallel to the main side (110), - the sacrificial region (14) on the finished semiconductor component (100) is not intended for the emission or absorption of radiation, - a trench (15) introduced into the semiconductor layer sequence (11) penetrates the active layer (12) and separates the active region (13) from the sacrificial region (14), - the active layer (12) is formed continuously within the active region (13); B) applying the semiconductor chip (1) with the semiconductor layer sequence (11) first onto a carrier (2); C) detaching the substrate (10) from the active region (13) of the semiconductor layer sequence (11), wherein in the sacrificial region (14) the semiconductor layer sequence (11) remains mechanically connected to the substrate (10); D) subsequently finally separating the substrate (10) from the semiconductor layer sequence (11) by detaching the substrate in the sacrificial region (14).

A three-coil gas flue gas turbulent heat exchange device and method of the present invention. The device takes a burner, an inner layer disc tube, a middle layer disc tube, and an outer layer flat coil tube as the main body, and adopts a three-layer coil design of inner, middle, and outer layers. The smooth tube coils of the inner and middle layers are arranged in a staggered manner to form a radiation-closed furnace chamber. The outer layer uses a flat coil tube to cool and condense the flue gas, effectively improving the thermal efficiency of the boiler. While cooling and condensing the flue gas, the viscous resistance of the flue gas is increased, so that the flow state of the flue gas changes from turbulent flow to laminar flow, increasing the heat transfer coefficient and enhancing the flue gas cooling and condensing ability. Moreover, the inner layer disc tube and the middle layer disc tube are arranged in a staggered manner to form a radiation-closed furnace chamber. According to the radiation fourth power law, the flue gas discharged from the burner can absorb a large amount of radiant heat. Compared with the current one-pass flat coil heat exchange wall in service, the manufacturing process is simpler, the heat exchange coil is more compact, and the cost is lower.

The present invention provides a radiation shield and radiation protective eyewear that can reduce the amount of X-rays absorbed by the lens of the eye of the operator performing the X-ray fluoroscopy examination during the examination process. [Solution] The radiation shield 100 of the present invention is a radiation shield to be attached to eyeglasses, and comprises a flexible sheet 101 containing a material that absorbs radiation, a shape-retaining member 102 that holds the sheet 101 in a predetermined three-dimensional shape, and a fixing means 103 that allows the sheet 101 to be attached and fixed to one temple of the eyeglasses.

The utility model discloses a self-shielding electron accelerator, which relates to the technical field of electron accelerators, solves the problems of poor anti-radiation effect and inconvenience in assembly and disassembly of the existing device, and adopts the following scheme that the top surface of a vertical plate is provided with a side plate of which the specification is matched with that of the vertical plate. Through the arrangement of the side plates, the water tank and the anti-radiation shielding cloth, the side plates and the top plate made of steel plates can shield radiation on the side faces and the top face, the anti-radiation shielding cloth can shield radiation on the left side and the right side, the water tank on the bottom face can absorb a large amount of radiation, and the radiation shielding effect is good; meanwhile, through the arrangement of the mounting holes A, the threaded holes A and the mounting holes C, the mounting holes A and the mounting holes B can facilitate the mounting of the bottom plate and the vertical plate, the threaded holes A and the threaded holes B facilitate the mounting of the side plate, the mounting holes C and the mounting holes D facilitate the mounting of the top plate, the mounting and dismounting are simple and convenient, and the use convenience is improved.

Coating compositions include a binder that has a first polymeric material that does not undergo ultraviolet (UV) degradation and / or does not absorb UV radiation / light. The coating compositions may further include at least a first UV-reflective pigment dispersed throughout the binder. The coating compositions may be provided in a cured form as a solid coating layer that may overly at least a portion of a substrate.

The invention discloses a high-temperature radiation heat recovery device and relates to the technical field of high-temperature production. The problems that an existing radiation heat recovery device cannot better recycle radiation heat energy of a high-speed wire production line while steel wires are produced, so that the comprehensive utilization rate of energy is low, and energy is wasted are solved. When the high-speed wire production line works, the overturning steel frame is slowly put down along with rotation of the winch and covers the high-speed wire production line, heat exchange media start to enter the input ports of the heat exchange tube bundles on the two inclined sections of the overturning steel frame to absorb radiation heat, and the overturning steel frame is connected with the heat exchange tube bundles on the bottom face of the horizontal section of the overturning steel frame in series through hoses. And the heat exchange medium enters the heat exchange tube bundle on the bottom surface of the horizontal section of the turnover steel frame to continuously absorb radiation heat, then flows out through the heat exchange tube bundle output port on the bottom surface of the horizontal section of the turnover steel frame, and enters an energy recovery device, namely a plate heat exchanger for heat recovery. The invention is suitable for the technical field of high heat recycling of the steel production line.

Disclosed herein is a radiation detector (100), comprising: an electronics layer (120) comprising a first set of electrical contacts (118A) and a second set of electrical contacts (118B); a radiation absorbing layer (110) configured to absorb radiation; a semiconductor substrate (103), a portion of the semiconductor substrate (103) extending into the radiation absorbing layer (110) along its thickness direction, the portion forming a first set of electrodes (119A) and a second set of electrodes (119B); wherein the first set of electrodes (119A) and the second set of electrodes (119B) interdigitate with each other; wherein the semiconductor substrate (103) comprises a p-n junction separating the first set of electrodes (119A) from the second set of electrodes (119B); wherein the electronics layer (120) and the semiconductor substrate (103) are bonded such that the first set of electrodes (119A) is electrically connected to the first set of electrical contacts (118A), and the second set of electrodes (119B) is electrically connected to the second set of electrical contacts (118B).

This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of testing powder bed material for contamination. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a detector solution. The fusing agent can include water, an electromagnetic radiation absorber, and a first pigment reactant. The electromagnetic radiation absorber can absorb radiation energy and convert the radiation energy to heat. The detector solution can include water and a second pigment reactant. The second pigment reactant can be reactive with the first pigment reactant to form a colored pigment.

This disclosure describes multi-fluid kits for three-dimensional printing, three-dimensional printing kits, and methods of sensing metal ions using three-dimensional printed ion sensors. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and an ion-sensing agent. The fusing agent can include water and an electromagnetic radiation absorber. The electromagnetic radiation absorber can absorb radiation energy and convert the radiation energy to heat. The ion-sensing agent can include water and a redox-active inorganic salt.

Examples of the present disclosure are directed toward fusing agent compositions. An example fusing agent composition includes a radiation absorber, a co-solvent mixture, and a balance of water. In various examples, the radiation absorber is present in an amount ranging from about 0.005 weight percent (wt %) to about 1.0 wt % of a total weight of the fusing agent composition, wherein the radiation absorber absorbs radiation at a wavelength range within the visible light spectrum.

Disclosed herein is a spectroscopy device incorporating a mid-infrared laser. In one particular embodiment a spectroscopy device is provided including: a substrate; a single mode laser positioned on the substrate; a single mode detector positioned opposite to the single mode laser on the substrate. A gap is formed between the single mode laser and the single mode detector and a substance is positioned in the gap. The single mode laser is configured to output a tunable narrow wavelength of radiation towards the detector and when the single mode laser outputs a wavelength of radiation overlapping one of the substance's rotational-vibrational energy levels, the substance at least partially absorbs the radiation. The single mode detector is configured to measure the amount of narrow wavelength radiation that is not absorbed by the substance between the single mode detector and the single mode laser.

The utility model relates to the technical field of electronic information, in particular to an anti-radiation displayer device which comprises a protection structure used for improving brightness and a heat dissipation structure used for reducing heat of a displayer, the heat dissipation structure is installed in a displayer body, and a clamping block is fixedly connected to the outer side of the displayer body. And a supporting plate is arranged at the bottom of the clamping block. Basic support can be provided through the supporting layer, the fiber layer enhances the structural strength and possibly has the conductive or shielding characteristic, the protective layer adopts an ITO film to achieve electromagnetic shielding, the absorption layer absorbs radiation energy through a polypropylene material, and the dispersion layer disperses residual radiation energy through polyvinyl chloride. The protection structure can effectively shield and absorb electromagnetic radiation through a multi-layer material, the problem that the electromagnetic radiation has adverse effects on a display and a user can be solved by optimizing the protection structure, the use safety can be improved, and the health of the user can be protected.

A high detectivity infrared and terahertz sensing using a silicon nitride (SiN) nanomechanical resonator functionalized with an optical absorber. The membrane resonator is actuated by a piezo actuator and interrogated by an interrogation laser to determine the intensity of an incident light source. High performances are achieved by striking a fine balance between the frequency stability of the resonator, and its responsivity to absorbed radiation.

An electric arc simulation method based on a reabsorption process comprises the following steps: current passes through gas to generate an electric arc; monitoring temperature distribution data of the electric arc in real time; determining an absorption state area of a radiation absorption part and a radiation state area of a radiation emission part in the arc based on the temperature distribution data; and setting absorbed heat in the absorption state area and setting radiated heat in the radiation state area so as to correct an electric arc simulation result.

The utility model discloses a radiation detection device, which comprises a shell, a main circuit board and a detection module, the shell is provided with an accommodating cavity, the main circuit board is arranged in the accommodating cavity, the main circuit board is provided with a first surface and a second surface which are oppositely arranged, the detection module comprises a detection element, and the detection element is vertically arranged relative to the first surface. The detection element is used for detecting the radiation and generating a radiation signal, and the radiation signal represents a characteristic of the radiation. According to the radiation detection device, the detection element is vertically arranged relative to the main circuit board, so that the path of radiation advancing in the detection element is prolonged, the radiation absorption time of the detection element is prolonged, the response capability of the detection element to radiation is improved, and the sensitivity of the radiation detection device is improved. Besides, the detection element is vertically arranged relative to the main circuit board, so that the area, occupied by the detection module, of the first surface of the main circuit board is small, the size of the main circuit board can be reduced, and miniaturization and portability of the radiation detection device are facilitated.

The invention discloses an optical frequency conversion chip and a preparation method thereof, and a reflective optical frequency conversion system, and relates to the technical field of semiconductors, the optical frequency conversion chip comprises a silicon substrate and a plurality of pixel units arranged on the surface in an array; each pixel unit comprises a supporting structure and a radiation absorption layer; the supporting structure comprises a contact layer and two supporting legs; the radiation absorption layer is located on the surface of the side, back on to the silicon substrate, of the contact layer, the projection of the contact layer on the silicon substrate completely covers the projection of the radiation absorption layer on the silicon substrate, and an interval space exists between the contact layer and the silicon substrate; the contact layer is connected with the supporting leg, and the supporting leg is located on the first surface of the silicon substrate and located on the side of the contact layer relative to the vertex angle; and the pixel units are S-shaped. The problem that the apparent temperature is reduced due to the fact that the resolution ratio of a chip is low and the heat dissipation surface of the pixel is large and the temperature is difficult to rise is solved, the temperature rise speed of the pixel unit can be increased, thermal crosstalk between adjacent pixels is reduced, and the refresh frequency, the resolution ratio and the apparent temperature of an image are increased.

An arc simulation method based on a reabsorption process, in which current is passed through a gas to generate an arc; temperature distribution data of the arc is monitored in real time; an absorption state region of a radiation-absorbing portion and a radiation state region of a radiation-emitting portion in the arc are determined based on the temperature distribution data; and the amount of heat absorbed in the absorption state region and the amount of heat radiated in the radiation state region are set to correct the arc simulation results.

The invention provides a gas remote sensing infrared characteristic calculation method and device. The technical problems that an existing high-temperature gas emission radiation long-distance transmission characteristic is huge in calculation amount and errors are not easy to overcome are solved through a broadband k distribution model based on atmospheric transmissivity weighting. The method comprises the following steps: establishing an atmospheric transmissivity weighted broadband k distribution model by using atmospheric transmissivity as an emission item influence factor of a gas internal spectral radiation transfer equation, and avoiding the reduction of calculation precision caused by uncorrelated k characteristics between a carrier hydrocarbon fuel gas wake flow absorption radiation spectrum and an atmospheric absorption radiation spectrum. A gas long-distance infrared characteristic calculation model which is small in calculation amount, high in calculation precision and good in compatibility is formed, and the requirements for precision and efficiency of numerical simulation of turbulent flow tail jet flow infrared remote sensing characteristics of a hydrocarbon fuel carrier and a complex structure exhaust system of the hydrocarbon fuel carrier can be met.

The invention relates to a sensor device (1) comprising a detection surface (4) having a plurality of detection regions (40) arranged next to one another and provided for absorbing radiation, and an optical device (2) covering the detection surface (4) when viewed in a vertical direction running perpendicular to the detection surface (4), the optical device (2) comprising a plurality of optical device channels (20) arranged next to one another; -each optical channel (20) is associated with an input optical device (21), an output optical device (22) and a diaphragm opening (30), wherein the output optical device (22) is arranged between the input optical device (21) and the detection surface (4); -the input optics (21) each image at least a part of the measurement field into an image plane (29); -the diaphragm opening (30) is arranged in the image plane (29); and-the output optics (22) image the radiation transmitted by the associated diaphragm opening (30) onto the detection surface (4).

The present disclosure includes a multi-fluid kit for three-dimensional printing. The multi-fluid kit can include a fusing agent including water and a radiation absorber that absorbs and converts radiation energy into heat, an acidic agent including water and an acidic component having a pH of about pH 1 to about pH 6.9, and a porosity promoter including water and a porosity promoting compound. The porosity promoting compound can chemically react with the acidic component to generate a gas, and can be selected from sodium bicarbonate, potassium bicarbonate, or a combination thereof.

Provided in the present disclosure are a radiation protection robot and a backscatter inspection apparatus. The radiation protection robot comprises: a first wheel enabling the radiation protection robot to move; a shielding device capable of reflecting and / or absorbing radiation; and radiation sensors configured to sense the radiation. The radiation protection robot is configured to move, by means of the first wheel, towards an area where a radiation dose value sensed by the radiation sensors increases, and to block the propagation of the radiation by means of the shielding device.

A solar thermal collector adapted to be assembled from a flat pack configuration, comprising a conduit (6) configured to carry fluid and to absorb radiation, a base (1) above which the conduit (6) is mounted and a plurality of panels configured to interconnect with the base (1) to produce a housing (8) for the conduit (6).