Abstract:
An electric-field enhancement element (100) includes a propagating surface plasmon generating unit (10); a localized surface plasmon generating unit (30) that is formed on an upper portion of a surface of a substrate and includes a plurality of fine metal structure bodies (32); and a metal layer (20) that is formed on an upper portion of the substrate surface and propagates a propagating surface plasmon generated by the propagating surface plasmon generating unit to the localized surface plasmon generating unit in a direction along the substrate surface, in which the fine metal structure body includes a plurality of fine metal structures (34) which are arranged to be separated from each other in a normal direction of the substrate surface.
Abstract:
The invention relates to a method and to a device for the analysis of oils and technical service fluids and for the qualified evaluation of the operating states of units, wherein a drop of the test fluid to be examined is applied to a test medium (10), is allowed to penetrate the test medium, and is evaluated after a preselected time by optically comparing a resulting image with the data of a plurality of reference images with respect to a plurality of test criteria. The problem addressed by the invention is that of proposing a method and a device for the analysis of oils and technical service fluids, wherein the test fluids to be examined can themselves give information about the state of said test fluids and statements and evaluations about the mechanical state of the components and units associated with the test fluids can be made. The invention shall make fast and reliable detection, evaluation, and assessment possible and shall reduce the influence of subjective assessment influences Then a computer-assisted comparison of the data of the test images with the data of the reference images is performed, in that the data of one or more images from the front recording, the back-light recording, and possibly the UV back-light recording are associated with the reference images for a particular test criterion that has the greatest correspondence. Then the properties of the test fluid and/or of the operating state of the unit that correspond to the associated data of the reference images are displayed and/or recorded.
Abstract:
A portable spectrometer device includes an illumination source for directing at a sample, and a tapered light pipe (TLP) for capturing light interacting with the sample at a first focal ratio and for delivering the light at a second focal ratio lower than the first focal ratio. A linearly variable filter (LVF) separates the captured light into a spectrum of constituent wavelength signals; and a detector array, including a plurality of pixels, each of the plurality of pixels disposed to receive at least a portion of a plurality of the constituent wavelength signals provides a power reading for each constituent wavelength. Preferably, the TLP is lensed at one end, and recessed in a protective boot with stepped inner walls. The gap between the TLP and LVF is minimized to further enhance resolution and robustness.
Abstract:
Disclosed herein is a biosensor for optical detection of Brownian relaxation dynamics of magnetic particles measured by light transmission. The magnetic particles can be functionalized with biological ligands for the detection of target analytes in a sample.
Abstract:
In order to provide reheating of cooked food that leads to an improved result of the reheated food, e.g. meat, in a facilitated manner, an apparatus (10) for reheating cooked food is provided that comprises a container (12) for receiving food to be reheated, a sensing module (16), a heating module (18), and a processing unit (20). The sensing module is provided with an emitter arrangement (22) configured to emit at least light as first sensing radiation (SRA 1 ) with a first sensing peak wavelength (SWL 1 ), and light as second sensing radiation (SRA 2 ) with a second sensing peak wavelength (SWL 2 ). The first and the second sensing radiations have different reflecting characteristics in relation with fat and protein in the food, e.g. meat to be reheated. The sensing module is also provided with a sensor arrangement (24) configured to detect light with the first sensing peak wavelength and light with the second sensing peak wavelength; wherein the light is reflected by the food. The heating module is configured to provide energy to the food arranged in the container by at least one heating radiation source (30) for heating the food in dependency of a determined fat/protein ratio. The processing unit is configured to determine the fat/protein ratio (32) of the food arranged in the container based on the detected light reflected by the food. The processing unit is configured to determine operating parameters (38) of the heating module, and to control the heating radiation source to emit light as first heating radiation (HRA 1 ) with a first heating peak wavelength (HWL 1 ), and light as second heating radiation (HRA 2 ) with a second heating peak wavelength (HWL 2 ). A power output of the first heating peak wavelength and the second heating peak wavelength is adapted to have a different absorption characteristics relating to fat and protein of the food/meat.
Abstract:
A gas detector (10) includes a cell internal space (130) into which a target gas is supplied, the target gas exhibiting an absorption peak in an absorption spectrum; a light source (410) configured to generate light having at least a wavelength belonging to the absorption peak; and a photodetector (420) configured to detect the light that has emitted from the light source (410) and has propagated through the cell internal space (130). The gas detector (10) further includes a conductive thin film (220) in which a plurality of optical apertures(222) are regularly arranged such that a transmission peak in a transmission spectrum is superimposed over the absorption peak in the absorption spectrum along a wavelength axis. The conductive thin film (220) is provided on an optical path extending from the light source (410) to the photodetector (420), and is provided so as to be contactable with the target gas within the cell internal space (130).
Abstract:
Disclosed is a multi-channel light measurement system adapted to illuminate and measure a test sample in a vessel. The multi-channel light measurement system has at least one photodetector per channel and a variable integrate and hold circuit coupled to each photodetector, the variable integrate and hold circuit allows adjustment of a sampling factor selected from a group of an integration time, a value of capacitance, an area of a discrete photodetector array, or any combination thereof. The system may readily equilibrate reference intensity output for multiple channels. Methods and apparatus are disclosed, as are other aspects.
Abstract:
A lighting device 10 that emits illumination light from two or more angular directions onto a sample surface 2 to be measured, an imaging optical lens 8, and a monochrome two-dimensional image sensor 4 are provided. This configuration provides a method and an apparatus that take a two-dimensional image of the sample surface 2 to be measured at each measurement wavelength and accurately measure multi-angle and spectral information on each of all pixels in the two-dimensional image in a short time. In particular, a multi-angle spectral imaging measurement method and apparatus that have improved accuracy and usefulness are provided.
Abstract:
Zum Ermitteln eines Stoffs in einer körperausgeschiedenen/entnommenen Flüssigkeit oder der verbrauchten Dialysierflüssigkeit und insbesondere zum Ermitteln eines Qualitätsmaßes für die Dialyse vorzugsweise der Konzentration ausgewählter Schadstoffe und/oder zum Ermitteln einer entfernten Gesamtmenge an urämischen Toxinen während einer Dialyse mit einer Dialysevorrichtung (1) weist die erfindungsgemäße Analysevorrichtung sowie das eingesetzte Vorrichtungssteuerungverfahren folgendes auf: Erfassung wenigstens eines ersten Extinktionssignals der körperausgeschiedenen/entnommenen Flüssigkeit oder der verbrauchten Dialysierflüssigkeit bei wenigstens einer vorgegebenen Analysewellenlänge bei einem definierten ersten pH-Wert der Flüssigkeit durch einen Absorptionssensor (10), Einstellung eines von dem ersten pH-Wert abweichenden zweiten pH-Wertes der Flüssigkeit durch eine pH-Einstelleinrichtung (9; 13; 15), Erfassung wenigstens eines zweiten Extinktionssignals der Flüssigkeit bei der wenigstens einen vorgegebenen Analysewellenlänge beim zweiten pH-Wert durch den Absorptionssensor (10), Verarbeitung/Vergleich der beiden Extinktionssignale für den ersten und zweiten pH-Wert sowie Ermittelung einer absoluten Konzentration des in der Flüssigkeit gelösten Stoffs.
Abstract:
An apparatus for imaging one or more selected fluorescence indications from a microfluidic device (205). The apparatus includes an imaging path coupled to least one chamber in at least one microfluidic device (205). The imaging path provides for transmission of one or more fluorescent emission signals derived from one or more samples in the at least one chamber of the at least one microfluidic device (205). The chamber has a chamber size, the chamber size being characterized by an actual spatial dimension normal to the imaging path. The apparatus also includes an optical lens system (210, 212) coupled to the imaging path. The optical lens system is adapted to transmit the one or more fluorescent signals associated with the chamber.