An imaging apparatus for imaging a sample (7) comprises an array of electronically addressable pixels (6) wherein each pixel is arranged to support a surface plasmon resonance therein to generate an evanescent electromagnetic field. This field extends transversely from the pixel so as to be salient from the array at a first side of the array for illuminating the sample at said first side. A light source (15) is arranged to illuminate the array with excitation light therewith to generate said surface plasmon resonance. An optical detector (12A, 12B, 12C) is arranged at a second side of the array which is opposite to said first side of the array for detecting optical radiation returned from the array in response to illumination of the array by said excitation light. A processing unit (4) is arranged to associate the detected optical radiation with the address of the pixel or pixels within the array at which the surface plasmon resonance was generated.

A concentration measurement method is performed using a concentration measurement device comprising: a measurement cell for flowing a fluid to be measured; a light source for generating light incident on the measurement cell; a photodetector for detecting light emitted from the measurement cell; an arithmetic unit for calculating the absorbance and concentration of the fluid to be measured based on an output of the photodetector; and a temperature sensor for measuring the temperature of the fluid to be measured. The concentration measurement method includes: a step of flowing a gas whose molecular structure varies with the temperature as the fluid to be measured in the measurement cell; a step of making light of a wavelength absorbable by the fluid to be measured to be incident from the light source to the measurement cell; a step of measuring the intensity of light emitted from the measurement cell by the photodetector; and a step of calculating the concentration of the fluid to be measured based on the temperature and the output of the photodetector measured by the temperature sensor.

A photonic quantum dew point sensor determines a dew point of an analyte and includes a common substrate; a photonic dew sensor on the common substrate and exposed for direct contact with the analyte; a photonic temperature sensor on the common substrate; an optomechanical temperature sensor on the common substrate; a dew sensor substrate interposed between the photonic dew sensor and the common substrate; a heater on the dew sensor substrate proximate to the photonic dew sensor; a temperature sensor substrate interposed between the common substrate and each of the photonic temperature sensor and the optomechanical temperature sensor; and a sensor cover on the photonic temperature sensor, the optomechanical temperature sensor, and the temperature sensor substrate to cover the photonic temperature sensor and the optomechanical temperature sensor to prevent direct contact between the analyte and each of the photonic temperature sensor and the optomechanical temperature sensor.

The concentration measurement device 100 includes an electric unit 20 having a light source 22 and a photodetector 24, a fluid unit 10 having a measurement cell 1, a first light-transmission member 11 for transmitting light from the light source to the measurement cell, a second light transmission member 12 for transmitting light from the measurement cell to the photodetector, a lens 3A provided in the fluid unit, the lens 3A being arranged such that light from the first light transmission member is to be incident on the first position and light is to be emitted from the second position to the second light transmission member, a pressure sensor 5 for measuring pressure of fluid flowing through the measurement cell, and an arithmetic circuit 28 for detecting concentration of the fluid flowing through the measurement cell, the arithmetic circuit being configured to calculate the fluid concentration based on the output of the photodetector and a correction factor related to the pressure output by the pressure sensor and the concentration of fluid in order to reduce the measurement error due to the refractive index of the fluid.

An imaging apparatus (1) for imaging a sample (7) comprising an array of electronically addressable pixels (6) wherein each pixel is arranged to support a surface plasmon resonance thereinto generate an evanescent electromagnetic field (8) which extends transversely from the pixel so as to be salient from plane of the array for illuminating the sample (7). An optical detector (12) is arranged for detecting optical radiation (9, 10, 11) scattered from the evanescent electromagnetic field (8) by the sample (7). A processing unit (4) arranged to associate the detected optical radiation (9, 10, 11) with the address of the pixel or pixels within the array at which the surface plasmon resonance was generated.

Photoacoustic detecting device (1), intended to be applied, via a contact face (3), against a medium to be analysed, the device comprising: a hollow cavity (20) comprising a first aperture (22) produced in the contact face, the cavity being bounded by a containment shell (21) that extends around the first aperture; a pulsed or amplitude-modulated light source (10) configured to emit, in an emission spectral band (Δλ), an incident light wave (11) through the cavity (20) to the first aperture; an acoustic transducer (28) linked to the cavity and configured to detect a photoacoustic wave (12) extending through the cavity.

The photoacoustic detecting device is optimized to increase the amplitude of the photoacoustic wave detected by the acoustic transducer.

A nanohole array (NHA)-based plasmonic sensor (e.g., gas/condensed phase sensor), their preparation, and their use to detect and analyze samples, especially mixtures of chemicals/bio-chemicals.

An imaging apparatus (1) for imaging a sample (7) comprising an array of electronically addressable pixels (6) wherein each pixel is arranged to support a surface plasmon resonance thereinto generate an evanescent electromagnetic field (8) which extends transversely from the pixel so as to be salient from plane of the array for illuminating the sample (7). An optical detector (12) is arranged for detecting optical radiation (9, 10, 11) scattered from the evanescent electromagnetic field (8) by the sample (7). A processing unit (4) arranged to associate the detected optical radiation (9, 10, 11) with the address of the pixel or pixels within the array at which the surface plasmon resonance was generated.

The present invention relates to testing biological or industrial samples. Disclosed by preferred embodiments is an electronic assay test reader for reading a lateral flow test strip having a development area comprising a test background region and at least one test result line, the electronic lateral flow assay test reader comprising: a cassette for retaining the test strip and a carrier adapted to removably retain the cassette therein; at least one illumination LED operably associated with one or a combination of the cassette and the carrier for illuminating the test strip, and; a light guide comprising a window structure of one or a combination of the cassette and the carrier to direct light emitted or reflected from a selected portion of the development area of the test strip to a sensor wherein the proportion of the at least one test result line relative to the proportion of test background region in the selected portion of the development area of the test strip is maximised

An apparatus related method for measuring a property of a target material. The system may include a pump device that generates a pump beam. A modulation device may receive the pump beam and generate a modulated pump beam by modulating an intensity amplitude of the pump beam, which may be directed to the target material. A probe device may generate a probe beam, which is directed to the target material. A part of the probe beam may be reflected off of the target material, and has similar frequency characteristic as the modulated pump beam. A detection device may detect the reflected probe beam and produce a signal. An analyzing device may receive the signal and calculate the target material property by comparing the modulated frequency characteristics of the signal to those of the pump beam. At least one of the pump and the probe beams may be infrared light.