Various embodiments may provide an optical sensing device based on surface plasmon resonance (SPR). The optical sensing device may include an optical arrangement configured to provide a first polarization light beam and a second polarization light beam, and a first optical member including a sensing surface, the first optical member configured to receive the first and second polarization light beams and reflect the first and second polarization light beams at the sensing surface. The optical sensing device may further include a second optical member arranged to receive the reflected first and second polarization light beams from the first optical member and configured to separate the reflected first and second polarization light beams in a first direction and a second direction, respectively. The optical device may additionally include a detector arrangement configured to detect the reflected first and second polarization light beams from the second optical member.

A sensor device includes a light source configured to emit a primary radiation, a detector having a plurality of detector units, and a sensor film including metallic nanoparticles geometrically between the reflecting optical element and the detector. The sensor film is configured to be exposed to a liquid or gas. The detector is configured to detect a spectral change in the primary radiation caused by the sensor film upon exposure to the liquid or gas. The reflecting optical element is a parabolic mirror. The reflecting optical element is the only reflective optics in a beam path between the light source and the detector. The detector is configured to detect secondary radiation scattered by the metallic nanoparticles. The primary radiation from the light source scattered at the metallic nanoparticles is measured in a transmission configuration.

Disclosed are a zero-power detecting sensor of a chemical substance and a sensing method. As light is irradiated to the detecting sensor including a graphene, a light absorbing layer, and an electrode stacked, the chemical substance is detected without power.

There is provided a sensor fiber including an electrically insulating material having a fiber length. At least one transduction element is disposed along at least a portion of the fiber length and is arranged for exposure to an intake species. A photoconducting element is in optical communication with the transduction element. At least one pair of electrically conducting electrodes are in electrical connection with the photoconducting element. The pair of electrodes extend the fiber length.

This present invention relates generally to devices, systems, and methods for performing optical and electrochemical assays and, more particularly, to devices and systems having universal channel circuitry configured to perform optical and electrochemical assays, and methods of performing the optical and electrochemical assays using the universal channel circuitry. The universal channel circuitry is circuitry that has electronic switching capabilities such that any contact pin, and thus any sensor contact pad in a testing device, can be connected to one or more channels capable of taking on one or more measurement modes or configurations (e.g., an amperometric measurement mode or a current drive mode).

Labelled silica nanoparticles for immunochromatographic reagent, comprising silica nanoparticles containing a labelled substance.

An analyte sensing device and a mobile device incorporating an analyte sensing device are disclosed. One example of an analyte sensing device is disclosed to include a body, a sensor die, and a substantially transparent material positioned such that the sensor die is sandwiched between the body and the substantially transparent material. The sensor die may be in optical communication with the substantially transparent material and in electrical communication with the body.

An analyte sensing device and a mobile device incorporating an analyte sensing device are disclosed. One example of an analyte sensing device is disclosed to include a body, a sensor die, and a substantially transparent material positioned such that the sensor die is sandwiched between the body and the substantially transparent material. The sensor die may be in optical communication with the substantially transparent material and in electrical communication with the body.

A preparation method and use of a BiOX/N-doped biochar nanocomposite, where X is I or Br is provided. The preparation method includes the following steps: step 1: preparation of an N-doped biochar; step 2: preparation of an acidified N-doped biochar; and step 3: preparation of the BiOX/N-doped biochar nanocomposite. In the present disclosure, a discarded crayfish shell, crab shell, or tofu residue is used as a raw material to prepare the BiOX/N-doped biochar nanocomposite, to realize the transformation of a renewable biological resource from waste into treasure. A photoelectric sensor is constructed based on the BiOX/N-doped biochar nanocomposite that can realize the detection of adenosine triphosphate (ATP) or Escherichia coli (E. coli).

A detection unit for a gas sensor, having at least one gas-sensitive element (1) including at least one gas-sensitive material, the optical properties of which vary as a function of the contact with a target gas. The detection unit is configured for arrangement on a mobile evaluation unit (5) having an image acquisition unit (6), in order to form a gas sensor, and the detection unit has at least one optical lens (2), and the gas-sensitive element (1) and the optical lens (2) are arranged in such a way that the ambient light (U) that passes through the gas-sensitive element (1) can be imaged by the optical lens (2), in particular can be imaged onto the image acquisition unit (6) when the detection unit is arranged on the mobile evaluation unit (5).