Abstract: A broadband calibrator assembly is provided and includes a medium/long wave infrared (MW/LW IR) assembly and multiple ultraviolet (UV)/visible and near IR (VNIR)/short wave IR (SWIR) assemblies.

Abstract: There is provided an X-ray Talbot capturing apparatus that emits X-rays in a cone beam shape from an X-ray generator, capable of producing gratings as easily as possible and of minimizing a production cost. An X-ray Talbot capturing apparatus 1 includes a G1 grating that is a phase grating, a G2 grating that is an absorption grating, a X-ray generator 11 that emits the X-rays, and an X-ray detector that includes a plurality of two-dimensionally arrayed conversion elements and captures a moire image Mo formed on the G2 grating. The G2 grating is located at a position where a self-image of the G1 grating 14 is formed, and both of the G1 grating and the G2 grating are in a plane shape. Slits of the G1 grating are formed to be perpendicular to a surface direction of a substrate on which the grating is formed, whereas slits of the G2 grating are formed to be parallel with the X-rays emitted in the cone beam shape from a focus F of the X-ray generator.

Abstract: In an example, an apparatus is described that includes a non-resistive heat source, a thermally conductive face, and a temperature detector. The thermally conductive face has a controlled long-wave infrared emissivity and is in thermal contact with the non-resistive heat source. The temperature detector is positioned to detect a temperature of the thermally conductive face.

Abstract: A terahertz spectrum test device and system includes a femtosecond fiber laser configured to generate a pump light and a probe light. The pump light excites a terahertz transmitter to generate terahertz waves which are transmitted to a sample suspension device to irradiate a suspended to-be-tested sample, and the probe light is directly transmitted to a terahertz detector. The terahertz detector receives the terahertz waves transmitted from the sample suspension device, and then transmits the terahertz waves and the probe light together to a signal processing circuit to obtain a corresponding terahertz time-domain spectrum. By adoption of the terahertz spectrum test device and system, the to-be-tested sample need not be fixed with a clamp or other instruments, so that terahertz waves will not irradiate to the instrument used for fixing the to-be-tested sample during a terahertz spectrum test, which may otherwise affect the test result.

Abstract: A temperature measuring system is disclosed herein. The temperature measuring system includes an optical assembly and a spectral data receiver. The temperature measuring system views passing gas and measures the radiant response of a selected gas. The measurement includes radiant intensities with respect to wavelengths in the infrared region.

Abstract: Systems and methods for hyperspectral and multispectral imaging are disclosed. A system includes a lens and an imaging device having a plurality of pixel sensors. A focus corrector is located within the optical path to refract at least a portion of the incoming light and change the focusing distance of specific wavelengths of light to converge at a focal plane. The focal corrector is selected based upon the imaging system to reduce an overall measure of deviation between a focal length curve for the lens and a focus position curve for pixel sensors to produce focused imaging data for a broad spectrum of light, including beyond the visible range.

Abstract: A wearable apparatus for indicating a threshold amount of ultra-violet (UV) light has been received by a user and method of making the same are provided. In an embodiment, a wearable apparatus includes a first material and a second material. The second material includes a color changing material that changes color from a first color to a second color when exposed to a threshold level of UV light. The wearable apparatus is configured to be worn by a user in a place exposed to sunlight. The second color indicates that the user has been exposed to a threshold amount of UV light.

Abstract: In a general aspect, a collimator system is described. In some aspects, a neutron beam collimation method includes receiving a neutron beam from a neutron source; polarizing the neutron beam using a polarizer, and obtaining a collimated neutron beam from the polarized neutron beam. The neutron beam generated by the neutron source has a first beam divergence and includes a plurality of neutrons. The collimated neutron beam has a second beam divergence that is less than the first beam divergence. Obtaining the collimated neutron beam includes mapping transverse momentum of each respective neutron, of the plurality of neutrons, onto a polarization degree of freedom of the respective neutron by applying a sequence of phase shift gradients to the polarized neutron beam, and after applying the sequence of phase shift gradients, passing the polarized neutron beam through an analyzer.

Abstract: A wafer-level integrated thermal detector comprises a first wafer and a second wafer (W1, W2) bonded together. The first wafer (W1) includes a dielectric or semiconducting substrate (100), a dielectric sacrificial layer (102) deposited on the substrate, a support layer (104) deposited on the sacrificial layer or the substrate, a suspended active element (108) provided within an opening (106) in the support layer, a first vacuum-sealed cavity (110) and a second vacuum-sealed cavity (106) on opposite sides of the suspended active element. The first vacuum-sealed cavity (110) extends into the sacrificial layer (102) at the location of the suspended active element (108). The second vacuum-sealed cavity (106) comprises the opening of the support layer (104) closed by the bonded second wafer.

Abstract: A gas analysis system with an FTIR spectrometer preferably utilizes a long path gas cell, a narrow band detector, and an optical filter that narrows the detection region. The interferograms are further prevent baseline drift and analyze the resultant spectra.

Abstract: A device for measuring the energy of neutrons incident in a first direction is provided. The device comprises a gas between a cathode and an anode, the anode comprising a matrix array of electron detectors, the first direction being orthogonal to the anode-cathode direction.

Abstract: A device for determining the composition of a mixture of fluids that flow along a pipe includes: a radiation source for illuminating the mixture with radiation; a detector for detecting radiation that has been attenuated by the mixture; and a device for monitoring the flow rate of fluid along the pipe and outputting a signal indicative of the flow rate. The device for determining further includes a device for adjusting the intensity of radiation emitting by the radiation source in response to the signal indicative of the flow rate so that the intensity of the radiation source is reduced if the flow rate reduces.

Abstract: The method and kit for detecting technetium-99m radioisotopes provide color-change solutions for visual detection of technetium-99m radioisotope-based tracers. A first color-change solution is formed from a mixture of thymol blue sodium salt solution and bromocresol purple solution. A first sample to be tested is determined to be a substance containing technetium-99m radioisotopes when the first sample to be tested turns yellow in color following spraying with the first color-change solution. A second color-change solution is formed from a mixture of bromocresol green solution and neutral red solution. A second sample to be tested is determined to be a substance containing technetium-99m radioisotopes when the second sample to be tested turns purple in color following spraying with the second color-change solution. The method and kit provide a rapid test for distinguishing a spill of radioactive TC-99m tracer from a saline spill in a nuclear medicine facility.

Abstract: An integrated photonics chip for thermal imaging comprises a photonics substrate including a plurality of receiver elements. Each receiver element comprises a first grating coupler optically coupled to a first waveguide filter and configured to receive a first wavelength of light at a given angle, with the first waveguide filter configured to pass the first wavelength of light; and a second grating coupler optically coupled to a second waveguide filter and configured to receive a second wavelength of light at the given angle, with second waveguide filter configured to pass the second wavelength of light. Each receiver element receives the wavelengths of light from an object of interest that emits the light due to blackbody radiation, and receives the wavelengths of light at respectively different angles. Each grating coupler receives a unique wavelength of light with respect to the other wavelengths of light received by the other grating couplers.

Abstract: A multilayer pyroelectric element includes: a laminate body constituted by multiple pyroelectric body layers laminated in their thickness direction; internal electrode layers which are provided between the pyroelectric body layers, and one ends of which extend to the outer peripheries of the adjoining pyroelectric body layers; and external electrodes that connect the alternate internal electrode layers together at the one ends, wherein “x1>x3 AND x2>x3” are satisfied wherein x1 is a distance between a pair of first faces crossing at right angles with the laminating direction of the pyroelectric body layers, x2 is a distance between a pair of second faces crossing at right angles with the first faces and running parallel with the laminating direction of the pyroelectric body layers, and x3 a is a distance between a pair of third faces crossing at right angles with the first faces and also with the second faces.

Abstract: A portable electronic dosimeter is described that comprises a plurality of detectors each configured to detect a type of ionizing radiation, wherein each detector is associated with an amplifier configured to produce an output in response to a plurality of detected photons of the ionizing radiation and an event counter configured to produce one or more counts in response to the detected photons of the ionizing radiation over an integration time; and a processor configured to receive the one or more counts from each of the counters and determine if there is coincidence of the one or more counts of all the detectors, wherein if there is coincidence the processor is configured to provide an over range alarm signal.

Abstract: A temperature monitoring system for a substrate heating furnace includes a temperature monitor, and the temperature monitor is located on a prong of a mechanical arm which is configured to fetch and place a substrate. The temperature monitor is configured to monitor the temperature of the substrate which has been heated by the substrate heating furnace and is located on the prong.

Abstract: A vacuum packaged infrared sensor array with excellent performances is described. The individual pixel of the infrared sensor array has a thermopile made of recrystallized amorphous silicon resulting in low resistance, low thermal noise, high integration and high sensitivity. The vacuum in the packaged infrared sensor array is enhanced by low temperature oxidization of a porous silicon layer formed in a lid silicon substrate which is bonded with the infrared sensor array silicon substrate. The driving force for lowering oxidization temperature is reduction in surface energy of porous silicon. It has been reported that the surface energy is 0.0001 J/cm2 for porous silicon and 0.2 J/cm2 for planar crystal silicon.

Abstract: To provide an infrared sensor that allows heat to be efficiently transferred from an insulating film to a heat sensitive element and has a good responsivity. The infrared sensor according to the present invention includes an insulating film 2; a pair of first adhesive electrodes 3A that is patterned on either surface of the insulating film; a pair of first terminal electrodes 4A that is patterned on either surface of the insulating film; a first heat sensitive element 5A that is provided on either surface of the insulating film and is connected to the pair of first adhesive electrodes; a pair of first pattern wiring parts 6A that is patterned on either surface of the insulating film with one end thereof being connected to the pair of first adhesive electrodes and the other end thereof being connected to the pair of first terminal electrodes; and a heat transfer film 7.

Abstract: Vapor cells are disclosed that include a dielectric body having a first surface and a second surface. The dielectric body includes a plurality of walls extending from the first surface to the second surface. A perimeter wall surrounds an open volume of the dielectric body and interconnected walls are arranged within the open volume to partition the open volume into a plurality of cells. Each cell has a first opening defined by the first surface and a second opening defined by the second surface. The vapor cells additionally include a first optical window covering the first openings and having a surface bonded to the first surface of the dielectric body to form a seal around each of the first openings. A second optical window covers the second openings and has a surface bonded to the second surface of the dielectric body to form a seal around each of the second openings.