A moisture, gas, fluid enabled sensor that includes an electronics component and a sensing component. The sensing component includes active electrode layer, a middle layer and a less active layer. When exposed to moisture, gas or fluid, the sensing component generates electricity which is then used to power the electronics component.

Devices and methods for detecting an analyte in a gas involve the use of plasmonic excitation of a nanostructured sensing element that is tuned to absorb at a narrow bandwidth specific for light absorbed by the analyte. The sensing element can be used as a capacitive or inductive element in a circuit.

A pH sensor includes a glass electrode unit to respond to pH; a comparative electrode unit to be measured for its potential relative to the glass electrode unit; a main pipe to convey test liquid; and a fluid inlet connected to the glass electrode unit and the main pipe. The glass electrode unit includes: a first storage unit filled with electrolyte solution; a first electrode to electrically connect the inside and outside of the first storage unit; a glass film disposed between the first storage unit and the main pipe; and a first pressure transmission unit connected to the fluid inlet. The first pressure transmission unit regulates the internal pressure of the first storage unit to control the pressure difference between the first storage unit and the main pipe separated by the glass film. The comparative electrode unit includes: a second storage unit filled with buffer solution; a second electrode to electrically connect the inside and outside of the second storage unit; a liquid junction unit disposed between the second storage unit and the main pipe; and a second pressure transmission unit connected to the fluid inlet. The second pressure transmission unit regulates the internal pressure of the second storage unit to control the pressure difference between the second storage unit and the main pipe separated by the liquid junction unit.

A probe chamber that includes a holder having a bore capable of holding a sensor or probe; a chamber housing having a central bore in fluid communication with the bore of the holder, wherein the chamber housing can be joined with the holder; and a measurement chamber in fluid communication with the central bore, wherein the measurement chamber comprises a gate, an inlet and an outlet and is capable of receiving a probe tip or sensor tip. Methods for calibrating a probe or sensor are also disclosed.

A hydrogen permeability testing device can measure hydrogen amount(s) entering a metal material by electrochemical hydrogen permeation. The device may include: a metal specimen having a hydrogen entry face through which hydrogen enters, a hydrogen detection face on which the entered hydrogen is detected, and a metal plating formed on the hydrogen detection face to detect the entered hydrogen; a reference and counter electrode for making an electrochemical reaction progress; an electrolytic vessel provided on a hydrogen detection face side, housing the reference and counter electrode, and containing an aqueous sodium silicate solution having a freezing point of ≤0° C. and capable of suppressing residual current to ≤10 nA/cm.sup.2 when an electric potential of the hydrogen detection face is −1 to 1 V relative to the reference electrode; and a measurement unit which measures the amount of hydrogen based on a current value resulting from the electrochemical reaction.

A hydrogen permeability testing device can measure hydrogen amount(s) entering a metal material by electrochemical hydrogen permeation. The device may include: a metal specimen having a hydrogen entry face through which hydrogen enters, a hydrogen detection face on which the entered hydrogen is detected, and a metal plating formed on the hydrogen detection face to detect the entered hydrogen; a reference and counter electrode for making an electrochemical reaction progress; an electrolytic vessel provided on a hydrogen detection face side, housing the reference and counter electrode, and containing an aqueous sodium silicate solution having a freezing point of ≤0° C. and capable of suppressing residual current to ≤10 nA/cm.sup.2 when an electric potential of the hydrogen detection face is −1 to 1 V relative to the reference electrode; and a measurement unit which measures the amount of hydrogen based on a current value resulting from the electrochemical reaction.

The invention provides a multi-layered electrode for sensing pH, the electrode comprising: a sensing layer on a substrate, the sensing layer comprising at least one proton-sensitive metal oxide, wherein a pH-dependent potential of the multi-layered electrode is measurable via an electrically conductive connection to the sensing layer; a proton-permeable layer covering at least a portion of the sensing layer, the proton-permeable layer comprising at least one electrically insulating proton-conductive metal oxide; and a carbonaceous layer on the proton-permeable layer, the carbonaceous layer comprising amorphous carbon.

A process fluid connector for a single-use process fluid sensing system is provided. The process fluid connector includes a pair of process fluid connections, each process fluid connection being configured to couple to a cooperative process fluid coupling. A process fluid conduit section is operably coupled to each of the process fluid connections. A sensor attachment port is coupled to the process fluid conduit section and is configured to receive and mount a process fluid sensor. A retractable fluid chamber is coupled to the process fluid conduit section and configured to provides wet storage for sensing component(s) of the process fluid sensor. A process fluid sensing system using the process fluid connector is also provided.

An apparatus and method wherein the apparatus includes a channel; at least one pair of electrodes provided within sides of the channel; an electrolyte configured to move through the channel such that when the electrolyte is positioned between the at least one pair of electrodes the electrolyte provides a current path between the at least one pair of electrodes; and wherein the at least one pair of electrodes are configured such that movement of the electrolyte through the channel enables a time varying voltage to be provided.

An organic light emitting display device includes a plurality of pixels. Each of the pixels includes an organic light emitting diode, first to third transistors, a storage capacitor, and a first capacitor. The second transistor includes a gate electrode receiving a first scan signal, a first electrode receiving a data signal, and a second electrode connected to a first electrode of the first transistor. The third transistor includes a gate electrode receiving a second scan signal, a first electrode connected to a second electrode of the first transistor, and a second electrode connected to a gate electrode of the first transistor. The storage capacitor includes a first electrode receiving a power voltage and a second electrode connected to the gate electrode of the first transistor. The first capacitor includes a first electrode connected to the gate electrode of the third transistor and a second electrode receiving the power voltage.