In an embodiment, a benzene sensor comprises a substrate having an iodine complex disposed thereon, a radiation source configured to project UV radiation onto the complex, and a UV detector configured to detect a UV reflection off of the substrate having the iodine complex. The iodine complex can include a cyclodextrine-iodine complex such as an alpha-cyclodextrine-iodine complex, a -cyclodextrine iodine complex, or any combination thereof.

The present invention relates to diagnostic devices incorporating electrode modules and fluidics for performing chemical analyzes. The invented devices consist of at least one component sensor formed on an electrode module, the sensor being contained within a fluidic housing. The electrode module is a laminate of a perforated epoxy foil and a photo-formed metal foil with sensor membranes deposited into the perforations. The fluidic housing is a diagnostic card consisting of a plastic card-like body, the at least one component sensor, a sealed chamber defined in the card body for containing a fluid, a fluid conduit for fluidically connecting the chamber with the sensor region, a valve for fluidically connecting the chamber to the fluid conduit, and a delivery structure separate and distinct from the valve for forcing fluid from the chamber and into the fluid conduit.

Arrays of integrated analytical devices and their methods for production are provided. The arrays are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. The devices allow the highly sensitive discrimination of optical signals using features such as spectra, amplitude, and time resolution, or combinations thereof. The devices include an integrated diffractive beam shaping element that provides for the spatial separation of light emitted from the optical reactions.

The present invention provides a method for preparing catalytic particles and using them for increased sensitivity in lateral flow immunoassays. Palladium salt is reduced in the presence of a protein using sodium borohydride as a reducing agent to form brown or gray particles. These particles catalytically develop a dye to detect the presence of an analyte.

Arrays of integrated analytical devices and their methods for production are provided. The arrays are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. The devices allow the highly sensitive discrimination of optical signals using features such as spectra, amplitude, and time resolution, or combinations thereof. The devices include an integrated diffractive beam shaping element that provides for the spatial separation of light emitted from the optical reactions.

Provided is a detection tool that detects a temperature of air. The detection tool includes a detection section that detects a temperature of air released from an air turbine handpiece, and a main body that includes a surface. The detection section is provided on the surface to allow the air turbine handpiece to be brought close to the detection section.

The present invention provides a facile heteroepitaxial method for growing conductive zinc-catecholate frameworks on bio-fibers with biomimetic connections, which is beneficial to fabricate biocompatible and high-performance photodetectors and chemiresistors, and the corresponding bio-fiber based metal-organic framework. In this method, a conductive layer is first introduced on the surface of polysaccharide bio-fibers, before well-aligned zinc oxide nanoarrays were densely constructed on the bio-fibers by a physiological coagulation mechanism. The obtained fibrous materials may be used in devices, including in electronic components, having the advantages of good stability, environmental-friendly, flame retardancy, and high response.

Arrays of integrated analytical devices and their methods for production are provided. The arrays are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. The devices allow the highly sensitive discrimination of optical signals using features such as spectra, amplitude, and time resolution, or combinations thereof. The devices include an integrated diffractive beam shaping element that provides for the spatial separation of light emitted from the optical reactions.

A colorimetric sensor for detecting an analyte of interest in a fluid sample includes a photonic structure comprising a first receptor, wherein the photonic structure may be configured such that, when an analyte contacts the first receptor within the photonic structure, a refractive property of the photonic structure changes thereby to cause a detectable color change in the photonic structure. The first receptor may comprise an optical absorber indicator, wherein a second receptor is part of a structure of the optical absorber indicator, such that, when the analyte contacts the second receptor, the analyte causes a photo-induced electron transfer to induce a color change of the optical absorber indicator.

The present invention provides a method for increasing the sensitivity of LFIAs by using palladium nanoparticles, selecting appropriate dye chemistries, and improving the timing of the development chemistry. In the presence of a palladium nanoparticle, three reagents interact with a catalytic label to form a colored dye. The three reagents include a hydrogen peroxide source, a color developer (a substituted para-phenylenediamine), and a color coupler (e.g. a napthol or a phenol). The timing of the development chemistry is improved by any combination of using a reducing agent, delaying hydrogen peroxide application by diffusion, using dissolving materials as a time delay, using serpentine flow, and separating the color coupler and the color developer on the strip.