Abstract: The present invention relates to a device for detecting corrosion of a metal part comprising a housing which is a hollow cylinder comprising a proximal end located proximate to the metal part upon installation of the device, and a distal end located away from the metal part upon installation of the device, a display having at least a part which is located inside the housing, a spring located inside the housing in a compressed manner, pushing the display outwardly and a sensor located in a manner that associates the housing with the display, comprising a corroded portion located outside the housing. According to this invention, the corroded portion of the sensor has a diameter in a range of 0.6 to 1.5 mm. Further, the present invention relates to a method for detecting corrosion of a metal part comprising installing the device according to this invention to the metal part.

Abstract: Methods, electrodes, and electrochemical devices using surface-modified pseudo-graphite are disclosed. In one illustrative embodiment, a method may include depositing a pseudo-graphite material onto a surface of an electrode substrate to produce a pseudo-graphite material surface. The method may also include modifying the pseudo-graphite material surface to alter electrochemical characteristics of the electrode.

Abstract: A method includes a step of introducing a solution between a substrate with a membrane in which the membrane is provided so as to close an opening and a substrate provided with an independent electrode in which the independent electrode is provided, a step of pressure bonding the substrate with the membrane and the substrate with the independent electrode through a partition wall, and a step of forming a sealed liquid tank surrounded by at least the membrane and the partition wall by the pressure bonding, and arraying of a solid-state type nanopore sequencer is simply performed.

Abstract: A capillary cartridge achieves both improvement of attachability and improvement of heat dissipation performance for realizing short-time analysis. A heat dissipation body is provided between a capillary having a detection unit provided in a part thereof and a plate-like support body that supports the capillary, and temperature increase inside the capillary is suppressed by the heat dissipation body, and thereby, electrophoresis can be performed under a high voltage application condition where the amount of heat increases and analysis time is reduced. In addition, it is possible to redress complexity of an operation by reducing a fixing place at the time of attachment to only a detection unit and an electrode holder by using an integration structure in which the capillary, the supporting body, and the heat radiating body are integrated.

Abstract: A method for diagnosing COVID-19 infection of a person. The method includes acquiring a sputum sample of the person, measuring a level of reactive oxygen species (ROS) in the sputum sample, and detecting a COVID-19 infection status of the person based on the measured level of ROS. Measuring the level of ROS in the sputum sample includes recording a cyclic voltammetry (CV) pattern from the sputum sample and measuring a current peak of the recorded CV pattern. Detecting the COVID-19 infection status of the person based on the measured level of ROS includes detecting the person is infected with COVID-19 if the measured current peak is in a first range of current peaks and detecting the person is not infected with COVID-19 if the measured current peak is in a second range of current peaks.

Abstract: Techniques for generating a diagnostic waveform for a sensor are provided. In an example, a control circuit for an electrochemical sensor can include power supply inputs configured to receive a supply voltage, a first signal generator configured to receive control information and to generate a first signal on a first output using the supply voltage and the control information, a second signal generator configured to receive the control information and to provide a second signal on a second output, using the supply voltage and the control information. An output voltage between the first output and the second output, in a diagnostic mode of operation of the control circuit, can include a periodic signal having a peak-to-peak voltage greater than the supply voltage.

Abstract: A gas sensor includes: a sensor element; a plurality of element pads formed on a rear end portion of the sensor element; and a plurality of contact members holding the rear end portion of the sensor element and electrically connected respectively to the plurality of element pads. At least one contact member of the plurality of contact members has an end portion having a smaller width Wt than the other contact members.

Abstract: A method for quantifying a target substance, comprising: bringing a sample containing the target substance into contact with a biosensor which comprises an enzyme electrode containing an oxidoreductase and a counter electrode; measuring a change in the potential difference between the enzyme electrode and the counter electrode due to oxidation reaction of the target substance catalyzed by the oxidoreductase; and calculating the concentration of the target substance based on the change in the potential difference; wherein a potential is applied between the enzyme electrode and the counter electrode before the measurement of the change in the potential difference.

Abstract: There is presented an electrochemical sensor (100) for sensing an analyte in an associated volume (106), the sensor comprising a first solid element (126), a second solid element (128) being joined to the first solid element, a chamber (110) being placed at least partially between the first solid element and the second solid element, a working electrode (104) in the chamber (110), a reference electrode (108), and wherein one or more analyte permeable openings (122) connect the chamber (110) with the associated volume (106), and wherein the electrochemical sensor (100) further comprises an analyte permeable membrane (124) in said one or more analyte permeable openings, wherein the one or more analyte permeable openings are placed at least partially between the first solid element and the second solid element.

Abstract: Methods, electrodes, and sensors for chlorine species sensing using pseudo-graphite are disclosed. In one illustrative embodiment, a method may include coating a pseudo-graphite material onto a surface of an electrode substrate to produce a pseudo-graphite surface. The method may also include exposing the pseudo-graphite surface to a sample to detect chlorine species in the sample.

Abstract: The presently disclosed subject matter relates to compositions, systems and methods of screening one or more species of polypeptide in a complex mixture of polypeptides, e.g., multi-subunit proteins. For example, the subject matter relates to ligands used in connection with affinity capillary electrophoresis, as well as methods and systems for detecting polypeptides in a mixture of multimers that include multispecific antibodies, e.g., bispecific antibodies.

Abstract: A monitor and indicator system includes a sensor part, a control and indication part, and a power part. The monitor and indicator system is configured to: (a) monitor a concentration of a sterilant in a sanitizing solution; (b) determine a depletion of the sterilant upon detecting that the concentration of the sterilant becomes equal to or falls below a predetermined threshold concentration level; and (c) indicate the depletion of the sterilant of the sanitizing solution by emitting a notification.

Abstract: An object separator may include a substrate, a fluid channel supported by the substrate, a pair of electrodes along the fluid channel to form a dielectrophoretic force to interact with an object entrained in a fluid and an inertial pump supported by the substrate to move the fluid along the fluid channel.

Abstract: A system, an apparatus and a method for simulating and assessing a damaged corrosion film in a pipe segment for pitting corrosion potential under field conditions, including variations in cathode to anode ratios. The apparatus has an anode case that holds a working electrode, a first body portion attachable to one end of the pipe segment, and a second body portion attachable to another end of the pipe segment, the first and second body portions defining a corrosion simulation cell. The anode case can be contained within the corrosion simulation cell, and the working electrode can include a test matrix.

Abstract: Described herein are systems, assays, methods and compositions for identification of oxidase microbial redox-enzymes (MREs) specific to an analyte of interest from an environmental source. The technology relates to identification of analyte-responsive MREs that can quantify the concentration of a target analyte with high specificity and high sensitivity, for example, where the identified analyte-responsive redox-enzyme can be used to engineer an electrochemical biosensor.

Abstract: In a general aspect, an apparatus can include a first carbon nanotube array that is patterned to define a first electrode having a first plurality of electrode segments. The apparatus can also include a second carbon nanotube array that is patterned to define a second electrode having a second plurality of electrode segments. The second plurality of electrode segments can be interdigitated with the first plurality of electrode segments. The apparatus can further include a biorecognition agent disposed on a surface of the first electrode and disposed on a surface of the second electrode. The first plurality of electrode segments can each have a height-to-width aspect ratio of at least 1 to 1.

Abstract: Described are devices, systems, kits, methods, and techniques for analyzing test fluids to determine presence, absence, or concentration of analytes in the test fluids and useful for performing diagnostic testing, such as to quickly identify whether or not an individual may have a particular disease or condition, such as infection by SARS-CoV-2 or a SARS-CoV-2 variant or vaccine-induced immunity or natural immunity to infection by SARS-CoV-2 or a SARS-CoV-2 variant. The devices, systems, kits, methods, and techniques described herein can be used to detect analytes in body fluids using a functionalized electrochemical test strip and potentiostatic measurements, allowing for prompt identification of whether or not an individual has a particular disease or condition, such as in a period of 5 minutes or less.

Abstract: The present disclosure relates to an ion-selective electrode for an electrochemical sensor for determining a measurand representing a concentration of an analyte in a measuring medium, including a probe body made of a first material and a sensor element including a base body made of a second material different from the first material and an ion-selective layer arranged on the base body. The probe body is connected to the base body by way of a liquid-tight joint, where the joint is formed by a receptacle, serving as a first joining partner, and a joining section protruding into the receptacle, serving as a second joining partner.

Abstract: Disclosed herein are methods and compositions for determining an improved estimate of the true fractional abundance of target analytes (e.g., specific polynucleotide sequences) in a sample using a nanopore sensor, e.g., by correcting errors inherent to identifying and correlating electrical signals to amounts of a target analyte or reference analyte in a sample.

Abstract: Methods, electrodes, and sensors for pH sensing using pseudo-graphite are disclosed. In one illustrative embodiment, a method may include coating a pseudo-graphite material onto a surface of an electrode substrate to produce a pseudo-graphite surface. The method may also include exposing the pseudo-graphite surface to a sample to detect organic content in the sample.