摘要:
The invention concerns a detection device adapted to analyse molecules with surface enhanced Raman scattering and surface enhanced infrared spectroscopy, comprising at least one metallic element (4) having a length/width ratio strictly greater than one.
摘要:
Light sources are provided with enhanced low-frequency (e.g., near infrared) emission. Some disclosed embodiments include a filament and at least one re-radiator element. The filament heats the re-radiator element to a steady-state temperature that is at least one quarter of the filament's absolute temperature. As disclosed herein, the increased surface area provided by the re-radiator element provides enhanced IR radiation from the light source. Patterning or texturing of the surface can further increase the re-radiator element's surface area. Various shapes such as disks, collars, tubes are illustrated and can be combined to customize the spectral emission profile of the light source. Some specific embodiments employ a coating on the bulb as the re-radiator element. The coating can be positioned to occlude light from the filament or to augment light from the filament, depending on the particular application. The various re-radiator elements can be positioned inside or outside the bulb.
摘要:
An electromagnetic wave generating device is provided which includes an optical waveguide including a plurality of waveguide segments such that the main lobe of a combined electromagnetic wave has a substantially single large directivity. The electromagnetic wave generating device includes the optical waveguide including a plurality of waveguide segments each of which is sandwiched between dielectrics and includes a nonlinear optical crystal. The waveguide segments are arranged such that an angle formed by the directions of propagation of light in the two adjacent waveguide segments substantially corresponds to 2thetac. When ng denotes the refractive index of the nonlinear optical crystal for light and Eeff denotes the effective relative permittivity of an assembly of the dielectrics and the waveguide segments for an electromagnetic wave, thetac is defined as thetac=cos-1 (ng/theta√Eeff).
摘要:
A non-destructive approach for the 3D localization of buried hot spots in electronic device architectures by use of Lock-in Thermography (LIT). The 3D analysis is based on the principles of thermal wave propagation through different material layers and the resulting phase shift/thermal time delay. With more complex multi level stacked die architectures it is necessary to acquire multiple LIT results at different excitation frequencies for precise hot spot depth localization. Additionally, the use of multiple time-resolved thermal waveforms, measured in a minimized field of view on top of the hot spot location, can be used to speed up the data acquisition. The shape of the resulting waveforms can be analyzed to further increase the detection accuracy and confidence level.
摘要:
Provided is a melting-processed resin article including a first resin layer, a second resin layer formed on the first resin layer, and an interface layer including a first resin and a second resin and formed between the first resin layer and the second resin layer. Thus, the melting-processed resin article may have excellent mechanical and surface characteristics without application of an additional coating process, and exhibit an effect such as reduction of a manufacturing time and/or cost, and an increase in productivity.
摘要:
An optical absorption spectroscopy apparatus comprises a light source, a detector for detecting an optical absorption spectrum of light transmitted from the source through a sample volume and one or more reflectors for reflecting the transmitted light multiple times through the sample volume. An adjuster device is provided for adjusting at least one optical element so as to vary the path length of the transmitted light by controlling the number of times the light is reflected through the sample volume. Drive means is provided for driving the adjuster device, so enabling the detector to detect the transmitted light at a range of different path lengths.
摘要:
A method for inspecting sealing defects of a container using infrared light, which can be carried out to inspect all of containers in a non-contact and non-destructive manner using a comparatively inexpensive apparatus, even if it is not just after a heat sealing operation. For this purpose, the infrared light in a wavelength range of 1450nm±20nm is irradiated from a phototransmitter onto the sealed portion of a sample container. The infrared light reflected from or transmitted through the sealed portion of the sample container is received by a photoreceiver 8, and transmitted to a photodetector 10 through an optical fiber 9. The photodetector 10 outputs a voltage according to an amount of the infrared light transmitted thereto, and the voltage thus outputted is then converted into an analog voltage value and further transmitted to a controller 12. The controller 12 sets a threshold based on the analog voltage value transmitted thereto. Then, the infrared light in a same wavelength range as the case of inspecting the sample container is irradiated onto the sealed portion of a container to be inspected. The infrared light reflected from or transmitted through the sealed portion of the inspected container is also converted into the analog voltage value and transmitted to the controller 12. If the infrared light is reduced to be smaller than the threshold set on the basis of the sample container, the sealed portion of the inspected container is judged as a sealing defect.
摘要:
A system for inspecting cigarette paper containing banded regions and non-banded regions. The system includes a short wave infrared camera (224), the short wave infrared camera forming electrical signals representing properties of the cigarette paper and a processor for analyzing the electrical signals to provide analysis results, the processor including logic for successively examining pixels to determine whether each successive pixel corresponds to a non-banded region or a banded region; logic for computing spacing between adjacent banded regions on the cigarette paper based on results provided by the logic for successively examining; and logic for computing width of banded regions on the cigarette paper based on results provided by the logic for successively examining. An online method for inspecting paper containing banded regions and non-banded regions is also provided.