A substrate (10) suitable for incorporation into an absorbent article (100) for monitoring and detecting the presence of wetness therein and/or risk of exudate leakage therefrom, is provided. Said substrate (10) comprises a conductive pattern (101) disposed on a first surface (20) capable of being arranged proximal to a body facing side of the absorbent article (100), wherein said conductive pattern (101) can be brought in electrical communication with a clip-on data processing module (103). Said conductive pattern (101) comprises: a plurality of connection tracks (1′,2′,3′,4′,5′); and a plurality of sensing tracks (9) connected to said connection tracks (1′,2′,3′,4′,5′), wherein the conductive pattern (101) is configured in a manner that addressing multiple combinations of said plurality of connection tracks (1′,2′,3′,4′,5′) with corresponding terminals (1,2,3,4,5) of the clip-on data processing module (103) result in multiple electrical circuit configurations for measuring resistance, impedance and/or capacitance therethrough.

A process for producing a sensor component for detecting an analyte; a sensor component producible by the process; a process for detecting an analyte; and a device comprising the sensor component. The process comprises electrochemically growing a plurality of conducting polymer molecules from a monomer electrolyte solution to provide a percolation network. The plurality of conducting polymer molecules are grown on the surface of an insulating substrate to connect a first electrode to a second electrode and are capable of displaying a change in an electrical property in response to interaction with an analyte A plurality of conductive nodes may be disposed on a surface of the insulating substrate. A potentiostatic method or a galvanostatic method may be employed to grow the plurality of conducting polymers. Chronoamperometry may be employed to electrochemically grow the plurality of conducting polymers. Cyclic voltammetry is not employed to grow the plurality of conducting polymers.

Methods of detecting a non-explosive analyte can include exposing a sensor compound to a non-explosive analyte and displaying a change in the sensor compound upon exposure of the sensor compound to the non-explosive analyte. A variety of sensor compounds for detecting a target analyte, including both explosive and non-explosive analytes, is also described. Sensor devices for detecting a target analyte can include a substrate and a sensor compound positioned on the substrate in a plurality of detection zones.

A system and method for direct and/or active detection and monitoring of civil engineering or other infrastructural structures, and in a preferred embodiment, for hydrocarbon leakage in oil and gas pipelines, storage structures, and/or transportation structures. Particularly, the system and method relate to various nanocomposite sensor coating and data gathering systems. In one embodiment, the apparatus includes a single measurement sensor coating (thin film) sensor. Other embodiments relate to multiple measurement sensor coating systems. The sensor is comprised of either a discrete conductive filament layer, or a single or multiple mesh of interwoven filaments of conductive material in one direction and nonconductive material in a perpendicular direction, as a substrate coated with sensitive coating materials to form a sensor grid. Various embodiments of the sensor coating and their applications are also disclosed.

Systems and methods for the detection of one or more target molecules, such as benzene, are described. The systems and methods may include a molecularly imprinted polymer film; a sensing material, wherein the molecularly imprinted polymer film comprises a polymer host with one or more binding sites for one or more target molecules. The molecularly imprinted polymer film may be coated upon the sensing material.

In an embodiment, the present disclosure pertains to a method of sensing an analyte in a sample by: (1) exposing the sample to an electrode that includes a covalent-organic framework with a plurality of metal-coordinated aromatic units that are linked to one another by aromatic linkers; (2) detecting a change in a property of the electrode; and (3) correlating the change in the property to the presence or absence of the analyte. In an additional embodiment, the present disclosure pertains to said covalent-organic frameworks. Additional embodiments of the present disclosure pertain to methods of making the covalent-organic frameworks.

A gas sensor for sensing a gas in a humid environment includes a first electrode layer, a second electrode layer that is spaced apart from the first electrode layer, and a gas sensing layer that electrically interconnects the first electrode layer and the second electrode layer. The gas sensing layer is made of a hygroscopic electrically insulating material.

A hydrogen sensor element comprising a pair of electrodes and a hydrogen detection film disposed in contact with the pair of electrodes, wherein the hydrogen detection film contains a conjugated polymer and a dopant, and wherein the absolute value |ΔG| of energy difference between the lowest unoccupied orbital of the dopant and the highest occupied orbital of the conjugated polymer in the ground state is 4.5 eV or more, is provided.

A hydrogen sensor element comprising a pair of electrodes and a hydrogen detection film disposed in contact with the pair of electrodes, wherein the hydrogen detection film contains a conjugated polymer and an organic dopant, and wherein the organic dopant includes a dopant having an acid group, and containing an atom having an absolute value of negative charge of 0.55 or more in the molecular structure other than the acid group, is provided.

Sensors and methods of fabricating sensors for detecting an analyte, such as a cytokine are provided. A sensor includes a porous, hydrophilic substrate, throughout which a coating comprising a mixture of graphene and a conductive polymer is disposed. The sensor further includes a sensing area, at which the coating is functionalized with at least one molecule that provides for a binding interaction with the analyte, and a contact area. The contact area includes an electrode in operative arrangement with the sensing area to provide a signal indicative of an impedance.