A polymer-based sensor for detecting agricultural analytes is disclosed, including stable polymer-based sensing films such as molecular imprinted polymers (MIPs) that can be incorporated in sensors for detecting herbicides and pesticides, as well as methods of making the sensing films.

Presented herein are methods, systems, and apparatus for single analyte detection or multiplexed analyte detection based on amplified luminescent proximity homogeneous assay (alpha) technology, but using hollow polymer fiber optics doped with acceptor bead dye (e.g., thioxene, anthracene, rubrene, and/or lanthanide chelates) or donor bead dye (e.g., phthalocyanine) that carry a signal generated by the dopant via singlet oxygen channeling.

An oxygen scanning device includes a console unit. The console unit includes a light source emitting excitation radiation and a detector configured to receive and detect phosphorescence radiation. The device includes a needle sensor operably, optically coupled to the console unit by an optical fiber movably received within a transparent tube housing the optical fiber, the transparent tube being coated by an oxygen-sensitive dye material on an outer side thereof. The optical fiber is terminated by a 45 degree reflecting surface at a distal end thereof wherein excitation radiation is directed to the oxygen sensitive dye material and phosphorescence radiation from the oxygen sensitive material is returned from the oxygen sensitive material to the detector.

A sensing system for characterizing analytes of interest in a sample comprises a photonic integrated circuit with an integrated interferometer. The integrated interferometer is configured for spectroscopic operation. The integrated interferometer comprises at least a sensing arm and a reference arm, both the sensing arm and the reference arm having an exposable segment available for interaction with the sample, whereby the exposable segment of the reference arm has an optical path length which is smaller than twice the optical path length of the exposable segment of the sensing arm. The exposable section of the sensing arm is selective to the analyte of interest, whereas the exposable section of the reference arm is not selective to the analyte of interest.

A planar waveguide device (PWD) for interacting with a fluid (FLD) is disclosed, the planar waveguide device (PWD) comprising a waveguide layer (WGL) for supporting optical confinement, a coupling arrangement (CPA) for in-coupling and out-coupling of light into and from the waveguide layer (WGL), a fluid zone (FZN) for accommodating the fluid (FLD), a filter layer (FTL) arranged between the fluid zone (FZN) and the waveguide layer (WGL) in an interaction region (IAR) of the waveguide layer (WGL),
wherein the filter layer (FTL) comprises filter openings (FOP) arranged to allow the fluid (FLD) to interact with an evanescent field of light guided by the waveguide layer (WGL),
wherein the filter openings (FOP) are adapted to prevent particles (PAR) larger than a predefined size from interacting with said evanescent field,
wherein the filter openings (FOP) are arranged as line openings having their longitudinal direction in parallel with the direction of propagation (DOP) of light guided by the waveguide layer (WGL).

Presented herein are methods, systems, and apparatus for single analyte detection or multiplexed analyte detection based on amplified luminescent proximity homogeneous assay (alpha) technology, but using hollow polymer fiber optics doped with acceptor bead dye (e.g., thioxene, anthracene, rubrene, and/or lanthanide chelates) or donor bead dye (e.g., phthalocyanine) that carry a signal generated by the dopant via singlet oxygen channeling.

Presented herein are methods, systems, and apparatus for single analyte detection or multiplexed analyte detection based on amplified luminescent proximity homogeneous assay (alpha) technology, but using hollow polymer fiber optics doped with acceptor bead dye (e.g., thioxene, anthracene, rubrene, and/or lanthanide chelates) or donor bead dye (e.g., phthalocyanine) that carry a signal generated by the dopant via singlet oxygen channeling.

A polymer-based sensor for detecting agricultural analytes is disclosed, including stable polymer-based sensing films such as molecular imprinted polymers (MIPs) that can be incorporated in sensors for detecting herbicides and pesticides, as well as methods of making the sensing films.

A scanning sensor system, methods of use and kits for detecting a biologically active analyte are provided. The scanning senor system includes a light source, a detector, a substrate comprising a plurality of waveguides and a plurality of optical sensing sites in optical communication with one or more waveguide of the substrate, and at least one adapter configured to couple with the substrate and provide optical communication between the light source, the waveguides of the substrate, and the detector.

A polymer-based sensor for detecting agricultural analytes is disclosed, including stable polymer-based sensing films such as molecular imprinted polymers (MIPs) that can be incorporated in sensors for detecting herbicides and pesticides, as well as methods of making the sensing films.