Class / Patent application number | Description | Number of patent applications / Date published |
204412000 | Three or more electrodes | 71 |
20080197018 | DEVICE WITH A PRE-DEFINED AND GUIDED CAPILLARY FILL DESIGN - The present invention discloses a device with a predefined capillary fill design comprising a substrate ( | 08-21-2008 |
20080237042 | High purity water pH sensor with shielded flowing liquid junction - A pH sensor is provided. The pH sensor includes a body, a glass electrode, a reference electrode and a solution ground. The glass electrode is disposed on the body to contact a liquid sample. The reference electrode has a reference fill solution disposed within the body. The solution ground electrode is operably coupled to the body and has a portion of the solution ground electrode that is disposed within a harbor such that a portion of the solution ground electrode is configured to contact the liquid sample. The body has a passageway that extends from the reference fill solution to an aperture proximate the liquid sample. | 10-02-2008 |
20080257730 | System and method for sensing using diamond based microelectrodes - A method and system is disclosed for monitoring one or more characteristics associated with a fluid. An insulating layer comprising non-conducting diamond is positioned within a housing and has a surface exposed directly or indirectly to the fluid. A plurality of microelectrodes made of electrically conducting diamond each have a surface exposed directly or indirectly to the fluid. An electrical circuit in electrical communication with each of the microelectrodes is adapted to convert electrical signals from the microelectrodes into at least one signal associated with a characteristic being monitored. The sensing system is well suited to hydrocarbon wellbore related applications, but can also be used in other applications. | 10-23-2008 |
20080264788 | Wastewater Analysis Sensor Cartridge - A wastewater analysis sensor cartridge ( | 10-30-2008 |
20090014329 | AMPEROMETRIC SENSOR - An amperometric sensor includes a first electrode, a second electrode and a reference electrode. The sensor further includes a switch to selectably electrically connect the first electrode as a working electrode and to electrically connecting the second electrode as an auxiliary electrode during a first time interval. During a second time interval, the switch electrically connects the first electrode as the auxiliary electrode and electrically connects the second electrode as the working electrode. The switching of the two electrodes is repeated continuously as amperometric measurements are performed. Preferably, the sensor includes an ultrasonic transducer proximate the working electrode and the auxiliary electrode to clean the electrodes. | 01-15-2009 |
20090026076 | NOX SENSOR WITH IMPROVED SELECTIVITY AND SENSITIVITY | 01-29-2009 |
20090120791 | GAS SENSOR AND NITROGEN OXIDE SENSOR - A gas sensor and nitrogen oxide sensor, which, when fitted to the exhaust system of an internal combustion engine, can suppress the influence of harmful substances contained in a measurement gas and can prevent the reduction in sensitivity over time. A harmful substance-trapping layer is formed at a gas inlet for introducing a to-be-measured gas from an external space into an internal space, and in a buffering space formed between diffusion resistance portions. In a trap-formed portion of a gas passage in which the harmful substance-trapping layer is formed, the measurement gas can pass in an amount of 80% or more of when the harmful substance-trapping layer is not formed in the trap-formed portion. A diffusion resistance is attained in the diffusion resistance portions; a harmful substance is trapped in the harmful substance-trapping layer; and the measurement gas is allowed to flow into a detection electrode side. | 05-14-2009 |
20090166197 | SENSOR APPARATUS FOR MEASURING AND DETECTING ACETYLENE AND HYDROGEN DISSOLVED IN A FLUID - A fuel cell sensor is provided for detecting the presence of acetylene and hydrogen in a fluid. The sensor includes a sensing element having first and second gas diffusing electrodes spaced from one another. The first gas diffusing electrode can be used for sensing acetylene. The second gas diffusing electrode can be used for sensing hydrogen. A fuel cell spacer having an acidic electrolyte is disposed between the sensing element and a common electrode. The sensing element can be configured to have a specific ratio of the area between the first gas diffusing electrode in relation to the area of the second gas diffusing electrode. | 07-02-2009 |
20090178925 | Chemical Sensor Based on Zinc Oxide Nanostructures for Detection of Hydrazine - The present invention relates to a chemical sensor for detection of hydrazine. The invention detects hydrazine with a modified electrode using ZnO nanostructures such as nanonails and hexagonal-shaped nanorods by electrochemical analysis. The ZnO nanostructures are grown by simple non-catalytic thermal evaporation process in the presence of oxygen and coated on the surface of electrode. The prepared ZnO nanostructures/electrode is used as electron mediator and enhances the electron transfer between the hydrazine and electrodes and produces a high sensitivity. The most important target of this invention is to present the use of novel, cost effective and easily grown ZnO nanostructures as efficient electron mediators to modify the electrodes and fabricate the chemical sensor for effective detection of hydrazine. | 07-16-2009 |
20090194417 | Electrochemical sensors - An electrochemical sensor comprising sensing and counter electrodes and first (sensor) and second (reservoir) matrices of respectively different porosity, each matrix containing electrolyte, the surface of the first matrix adjacent and in contact with the second matrix having a catalytic coating applied thereto as sensing electrode and the electrolyte contained within the second matrix being capable of flow to or from the first matrix. | 08-06-2009 |
20090242401 | NOx SENSOR - A sensor for specifying a concentration of a predetermined gas component in a measurement gas on the basis of a current flowing in an electrolyte by decomposition of the predetermined gas component, includes an internal space; a reference gas space; a pumping cell capable of pumping out oxygen in the internal space by applying a predetermined voltage between a first electrode and a second electrode; and a measuring cell including third and fourth electrodes and measuring a current flowing when a voltage is applied between the third electrode and the fourth electrode; wherein the first electrode is formed of porous cermet consisted of a noble metal and an oxygen ion conductive solid electrolyte, and the porosity of the first electrode is greater than or equal to 10% and less than or equal to 50%. | 10-01-2009 |
20090242402 | NOx SENSOR - A gas sensor for specifying a concentration of a predetermined gas component in a measurement gas on the basis of a current flowing in an electrolyte by decomposition of the predetermined gas component, includes an internal space; a reference gas space; a pumping cell capable of pumping out oxygen in the internal space by applying a predetermined voltage between a first electrode and a second electrode; and a measuring cell including a third electrode and a fourth electrode and measuring a current flowing between the third electrode and the fourth electrode when a voltage is applied between the third electrode and the fourth electrode; wherein the first electrode is formed of porous cermet consisted of noble metal containing gold of greater than or equal to 0.01 wt % and less than or equal to 0.95 wt %. | 10-01-2009 |
20090308747 | AMMONIA SENSOR - A gas sensor, particularly an ammonia sensor, having a first sensor cell that is made up of a solid electrolyte, a first measuring electrode that is to be exposed to the measuring gas and a second measuring electrode. In order to reduce an NO | 12-17-2009 |
20100012492 | Small Volume In Vitro Sensor and Methods of Making - A sensor utilizing a non-leachable or diffusible redox mediator is described. The sensor includes a sample chamber to hold a sample in electrolytic contact with a working electrode, and in at least some instances, the sensor also contains a non-leachable or a diffusible second electron transfer agent. The sensor and/or the methods used produce a sensor signal in response to the analyte that can be distinguished from a background signal caused by the mediator. The invention can be used to determine the concentration of a biomolecule, such as glucose or lactate, in a biological fluid, such as blood or serum, using techniques such as coulometry, amperometry, and potentiometry. An enzyme capable of catalyzing the electrooxidation or electroreduction of the biomolecule is typically provided as a second electron transfer agent. | 01-21-2010 |
20100025239 | Biosensor - A biosensor is a sensor strip that is folded to form a base and a cover. The base has sides, a reactive layer and two electrodes. One of the electrodes is mounted longitudinally on the base, extends from the base to the cover and is covered with insulating materials. The other electrode is mounted on the base from an end of the base to the reactive layer. The cover bonds to and is shorter than the base and has a sample notch. The sample notch is formed in one side of the cover, corresponds to the reactive layer and is near the electrode on the reactive layer. A sample reacts thoroughly with the reactive layer because the anode on the cover takes time to transfer electrons therefore accurate test results are obtained. | 02-04-2010 |
20100051457 | PLANAR INTEGRATED ION SENSOR - A planar integrated ion sensor has a planar substrate, a working electrode assembly, a reference electrode assembly and an exchange junction. The working electrode assembly is mounted on one surface of the planar substrate and has an ion selective electrode, a working conductor electrically coupled with the ion selective electrode and a working barrier partially covering the ion selective electrode and the working conductor. The reference electrode assembly has a reference electrode, a reference conductor electrically coupled with the reference electrode, a reference barrier partially covering the reference electrode and the reference conductor and a hood with an inner space filled with electrolyte. The exchange junction allows communication between a liquid sample and the electrolyte in the inner space of the hood. The present invention has a decreased volume, is easily portable and is convenient for an operator to determine ion concentration in the liquid sample without incorporating other device. | 03-04-2010 |
20100078324 | ELECTROCHEMICAL CELL - A hollow electrochemical cell is provided. In one exemplary embodiment, a hollow electrochemical cell includes two sets of electrodes and an opening for admitting an analyte to the cell. At least one of the two sets of electrodes can be in fluid communication with the opening. Further, a first set of electrodes can include a working electrode spaced from a counter or counter/reference electrode by less than 500 μm. In one embodiment the working and counter or counter/reference electrodes are not co-planer. In another embodiment the working and counter or counter/reference electrodes are of substantially corresponding area. In yet another embodiment the working and counter or counter/reference electrodes are spaced from 100 to 200 μm apart. The first set of electrodes and the second set of electrodes can be spaced apart by greater than about 500 μm. Other embodiments of a hollow electrochemical cell are also provided, as are several embodiments of a glucose sensor. | 04-01-2010 |
20100096264 | MULTILAYER CERAMIC NOx GAS SENSOR DEVICE - A mixed potential NO | 04-22-2010 |
20100224489 | Electrochemical Cell - The present invention relates to an electrochemical cell comprising a vibratile electrode (eg a vibratile microelectrode). | 09-09-2010 |
20100224490 | MULTIPLE-ELECTRODE IONIC PROBE - A multiple-electrode ion meter ( | 09-09-2010 |
20100236924 | LIQUID ELECTROLYTE COMPOSITION AND ITS USE IN GAS SENSORS - A liquid electrolyte composition obtainable by combining a first component comprising bistrifluoromethanesulfonimide and/or an analogue thereof with a second component comprising a dialkyl sulfone, diaryl sulfone, alkyl aryl sulfone, alkyl acyl sulfone, boric acid, alkyl boronic acid, aryl boronic acid, dialkyl phosphite, trialkyl phosphite, dialkyl phosphate, trialkyl phosphate, alkylene carbonate, alkanoic lactone, preferably alkanoic γ-lactone an analogue of any of these, or mixtures thereof, wherein any of the alkyl, aryl of alkenyl groups may be substituted or unsubstituted. The liquid electrolyte is used in an electrochemical gas sensor. | 09-23-2010 |
20100243444 | GAS SENSOR - A gas sensor includes a gas sensor element. The gas sensor element includes a first detection chamber; a first oxygen pumping cell including a first solid electrolyte body and a pair of first electrodes; a second detection chamber; a second oxygen pumping cell including a second solid electrolyte body and a pair of second electrodes; and an oxygen-concentration sensing cell including a third solid electrolyte body and a pair of third electrodes. A sensing electrode of the third electrodes is disposed downstream beyond a first inner electrode of the first electrodes relative to a gas flow direction. A cross-sectional area of a space of the first detection chamber which faces the first inner electrode falls within a range from 0.03 mm | 09-30-2010 |
20100276287 | Multi-gas microsensor assembly - A multi-gas microsensor assembly for simultaneously detecting carbon dioxide and oxygen in real time. According to one embodiment, the assembly comprises a non-conductive, solid substrate. A plurality of sensing electrodes, a single reference electrode, and a single counter electrode are positioned on one side of the non-conductive, solid substrate. In addition, all of the electrodes are in intimate contact with the same side of a solid-polymer electrolyte anion-exchange membrane, the solid polymer electrolyte membrane having at least one gas diffusion opening aligned with each sensing electrode. The sensor is operated in a three-electrode potentiostatic mode, in which a constant potential is maintained between the sensing and reference electrodes, and the current is measured between the sensing and counter electrodes. Control of the electrodes is achieved with a small bi-potentiostat. The design of the bi-potentiostat allows at least two different sensing electrodes to share the same counter and reference electrodes. | 11-04-2010 |
20100294662 | FAST RESPONSE ELECTROCHEMICAL ORGANOPHOSPHATE SENSOR - Working electrodes, electrochemical sensors including a working electrode, and methods for manufacturing the same are disclosed. An example working electrode for an organophosphate sensor may include a titanium based porous layer that has a Three-Dimensionally Ordered Macro-Porous (3DOM) structure. The porous layer may be able to detect an organophosphate material having a nitrobenzene ring. | 11-25-2010 |
20100320087 | MEASUREMENT CELL - A measurement cell provides electrochemical characterisation of a sample. The cell includes a container in which a sample is located, the container having walls and a base defining an interior region for containing a conductive media. A base electrode is located adjacent a base of the container, a counter electrode is spaced from the base electrode and a reference electrode is located between the base and counter electrodes. Samples that may be characterised include the conductive media, an element forming the base electrode or a surface of the base electrode, an element in contact with the conductive media, or any two or more of these. The reference electrode contacts the conductive media between the base electrode and the counter electrode such that electrical paths are is established through the sample between the base electrode and the counter electrode and between the base electrode and the reference electrode. | 12-23-2010 |
20110042212 | ANALYZING TOOL - The present invention relates to an analyzing tool including: a plurality of electrodes | 02-24-2011 |
20110100812 | ELECTRODE MODULE - An electrode module includes a working electrode, a counter electrode, a reference electrode and a well (container) for retaining an electrolytic solution and is used in electrochemical measuring instruments. This electrode module is produced by integrating the well with at least one of the working electrode, the counter electrode and the reference electrode. This integrated electrode includes a chip-like electrode having a thin membrane of an electrode material formed on the surface of a chip-like base metal. This chip-like electrode is disposed on and integrated with the bottom of the well in a detachable manner. There is provided the compact, low price electrode module of high repetition use efficiency with no need of maintenance and having easy handling. | 05-05-2011 |
20110108419 | HEATED BISTABLE SENSOR HAVING SIMPLIFIED ELECTRICAL CONTACTING - A sensor element for determining a physical property of a gas in a measuring gas chamber includes at least two electrodes, at least one solid-state electrolyte connecting the electrodes, and at least one heating element having at least two heating contacts. A first heating contact and a first electrode are contacted via a common connecting line, and a second heating contact and a second electrode are connected to a common ground line. | 05-12-2011 |
20110192722 | ELECTROCHEMICAL DETECTION CELL FOR LIQUID CHROMATOGRAPHY SYSTEM - A detection cell for a chromatography system includes a cell body having an inlet, an outlet, and a counter electrode, a working electrode, a sample flow passageway extending between the inlet and the outlet and in fluid contact with the counter and working electrodes, and a palladium/noble metal reference electrode system. A method of using the detection cell is also described. | 08-11-2011 |
20110209996 | Electrochemical sensor - An electrochemical sensor for detecting the concentration of ions in a solution includes a substrate, a sensor unit, and a reference electrode. The sensor unit includes at least one working electrode. The working electrode has a conductive layered structure formed on the substrate, and a sensor element of a metal oxide film formed on the conductive layered structure and capable of reacting with the ions in the solution to generate a potential. The reference electrode is spaced apart from the working electrode, and includes a conductive film printed on the substrate for establishing a potential difference between the working electrode and the reference electrode when the electrochemical sensor is brought into contact with the solution. | 09-01-2011 |
20110209997 | Electrochemical Cells, and Gas Sensor and Fuel Cell Devices Comprising Same - An electrochemical cell for applications such as electrochemical fuel cells, or electrochemical cell gas sensors used for detection of target gas species in environments containing or susceptible to presence of same. The electrochemical cell utilizes an ionic liquid as an electrolyte medium, thereby achieving a broader range of operational temperatures and conditions, relative to electrochemical cells utilizing propylene carbonate or other conventional electrolytic media. | 09-01-2011 |
20110226618 | GAS SENSOR - A gas sensor including an internal space, a first electrode, a second electrode, a pumping cell, a third electrode, a fourth electrode, a measuring cell, and a porous diffusion layer. The first and third electrodes, and the second and fourth electrodes are formed inside and outside the internal space, respectively. The pumping cell includes the first and second electrodes, and the measuring cell includes the third and fourth electrodes. The pumping cell pumps oxygen from the internal space when a predetermined voltage is applied between the first and second electrodes. The third electrode reduces an oxide gas component in a predetermined gas component to which a predetermined diffusion resistance has been applied by the porous diffusion layer. The measuring cell measures current flow between the third and fourth electrodes when a voltage corresponding to the degree of reduction in the third electrode is applied between the third and fourth electrodes. | 09-22-2011 |
20110233060 | GAS SENSOR - A gas sensor including a sensor element constituted by an oxygen-ion conductive solid electrolyte as a main component and detecting a predetermined gas component in a measurement gas includes: an external communication part having an opening opened to the outside, and introducing the measurement gas from the outside under a predetermined diffusion resistance; an internal space communicating with the external communication part; a first electrode formed on a surface of the internal space; a second electrode formed in a space different from the internal space; and a pumping cell operable to pump out oxygen existing in the internal space when a predetermined voltage is applied between the first electrode and the second electrode. The thickness of the external communication part is 50% or more and 100% or less of the thickness of the internal space. | 09-29-2011 |
20110308946 | Ion-Selective Electrode - An ion-selective electrode comprising: a housing, which surrounds a housing interior; an ion-selective membrane; especially a polymer membrane; and a sensing system, which is in contact with the ion-selective membrane, for sensing a potential of the ion-selective membrane, wherein the ion-selective membrane at least partially fills the housing interior, and is in contact with a medium surrounding the housing via at least one traversing bore through a housing wall of the housing. | 12-22-2011 |
20110315551 | ELECTRODE FOR ACTIVE OXYGEN SPECIES AND SENSOR USING THE ELECTRODE - An electrode for active oxygen species comprising a conductive component with a polymer membrane of a metal porphyrin complex formed on the surface is disclosed. The electrode for active oxygen species can detect active oxygen species such as superoxide anion radicals, hydrogen peroxide, and .OH and other active radical species (NO, ONOO—, etc.) in any environment including in vivo environment as well as in vitro environment. The electrode thus can be used for specifying various diseases and examining active oxygen species in food or in water such as tap water and sewage water. | 12-29-2011 |
20120018303 | ELECTROCHEMICAL SENSOR - An electrochemical sensor having at least two electrodes, and a reservoir chamber containing electrolyte. The reservoir chamber is internally coated with a wicking material to spread the electrolyte evenly over the walls of the reservoir. | 01-26-2012 |
20120125771 | CARBON NANOTUBE SENSOR - The present invention provides a remote monitoring system for monitoring the operation of a fluid treatment system and/or the qualities, characteristics, properties, etc., of the fluid being processed or treated by the fluid treatment system. The present invention also relates to carbon nanotube sensors. | 05-24-2012 |
20120152740 | MICROFLUIDIC SYSTEM - Disclosed is a micro-fluidic system including a lower substrate, an upper substrate formed opposite to the lower substrate and formed with an air injection path, and a micro-fluidic device interposed between the upper and lower substrates, wherein the micro-fluidic chamber includes a fluid chamber filled with a fluid and the fluidic chamber is physically connected to the air injection path. | 06-21-2012 |
20120228138 | ARRAY-TYPE NH3 SENSOR - An array-type sensor that senses NH | 09-13-2012 |
20130015064 | Sensors For Carbon Dioxide And Other End Uses - Electrochemical sensors measure an amount or concentration of CO | 01-17-2013 |
20130015065 | MEASURING DEVICEAANM Nakatani; MasayaAACI HyogoAACO JPAAGP Nakatani; Masaya Hyogo JPAANM Takahashi; MakotoAACI OsakaAACO JPAAGP Takahashi; Makoto Osaka JP - A measuring device is configured to measure a reaction of test objects suspended in a first liquid. The measuring device includes a base and a vibration generator. The base has a first cavity and second cavities provided therein. The first cavity is configured to store the first liquid. The vibration generator generates a standing wave in the first liquid stored in the first cavity. The base has through-holes provided therein. Each of the through-holes allows respective one of the second cavities to communicate with the first cavity. The through-holes have opening sections. The opening sections open to the first cavity and are configured to capture the test objects. This measuring device can measure a test objects with a high efficiency. | 01-17-2013 |
20130087457 | AUXILIARY GAS DIFFUSION ELECTRODES FOR DIAGNOSTICS OF ELECTROCHEMICAL GAS SENSORS - An electrochemical gas sensor includes additional gas diffusion electrodes incorporated to carry out one or more diagnostic functions while the sensor is responding to a target gas. Members of a plurality of sensing and diagnostic electrodes can be switched by associated control circuits to intermittently sense a target gas while others intermittently sense a different gas. The diagnostic electrodes are in direct communication with the target gas that is entering the cell. | 04-11-2013 |
20130220808 | GAS SENSOR - A gas sensor including an internal space, a first electrode, a second electrode, a pumping cell, a third electrode, a fourth electrode, a measuring cell, and a porous diffusion layer. The first and third electrodes, and the second and fourth electrodes are formed inside and outside the internal space, respectively. The pumping cell includes the first and second electrodes, and the measuring cell includes the third and fourth electrodes. The pumping cell pumps oxygen from the internal space when a predetermined voltage is applied between the first and second electrodes. The third electrode reduces an oxide gas component in a predetermined gas component to which a predetermined diffusion resistance has been applied by the porous diffusion layer. The measuring cell measures current flow between the third and fourth electrodes when a voltage corresponding to the degree of reduction in the third electrode is applied between the third and fourth electrodes. | 08-29-2013 |
20130256133 | ELECTROCHEMICAL SENSOR - A voltammetric pH sensor, especially for characterising wellbore fluids, comprises a plurality of electrodes with a redox active organic compound attached to an electrode and having at least one functional group convertible electrochemically between reduced and oxidized forms with transfer of at least one proton between the compound and surrounding aqueous phase, wherein the compound has at least one substituent group which promotes hydrogen bonding at a said functional group and thereby increases the reaction rate of proton transfer. The substituent group may form an internal hydrogen bond with a redox-convertible group or may enhance polarity to promote electrostatic interaction with water molecules and reduce activation energy. Typical examples include alizarin or 1,2-dihydroxy-anthraquinone (RH=72-48-0), quinizarin or 1,4-dihydroxy-anthraquinone (RN=81-64-1), 2-acetoxy-benzoquinone (RN=1125-55-9), chloranil or 2,3,4,5-tetrachloro-benzoquinone (RN=118-75-2) and 1,4-diamino-2,3-dichloro-anthraquinone (RN=81-42-5) deposited on a glassy carbon electrode. In this way, anomalous measurements at low ionic strength and low concentrations of pH buffering species can be overcome. | 10-03-2013 |
20130277216 | ELECTROCHEMICAL CELL - The present invention relates to electrochemical cells including a first working electrode | 10-24-2013 |
20140008220 | Microfluidic Nitric Oxide Sensor - The presently disclosed subject matter relates to a microfluidic device for measuring an amount of a molecular species in a sample. The device comprises a body and an electrode assembly, the electrode assembly comprising at least one electrode coupled to the body. The device also includes a gas permeable membrane disposed on at least one electrode and a detector for measuring a current at each of the electrodes. Further, the device comprises a channel defined between a substantially planar substrate and planar cover glass. The presently disclosed subject matter also relates to methods of making the microfluidic device. | 01-09-2014 |
20140008221 | NITRIC OXIDE MICROSENSORS VIA FLUOROSILANE-BASED XEROGEL MEMBRANES - The presently disclosed subject matter relates to sensors for measuring an amount of a gaseous species in a sample. The sensors comprise a gas permeable polysiloxane network membrane, comprising both alkyl and fluorinated alkyl groups. In some embodiments, the polysiloxane network can be formed from the co-condensation of a mixture of an alkylalkoxysilane and a fluorosilane. The presently disclosed subject matter also relates to methods of making the sensors, methods of selectively measuring an amount of a gaseous species, such as nitric oxide, in a sample, and to compositions comprising the polysiloxane networks. | 01-09-2014 |
20140014512 | AMPEROMETRIC SENSORS AND DEVICES FOR MEASURING CONCENTRATION OF S-NITROSOTHIOLS BASED ON PHOTO-INDUCED DECOMPOSITION OF S-NITROSOTHIOLS - Provided are an amperometric sensor and device for electrochemically quantifying nitrosothiol (RSNO), which is associated with storage and delivery of nitric oxide (NO) in the human body. The amperometric sensor for measuring a concentration of RSNO includes an electrode configured to measure an electric current generated by an oxidation reaction of NO, and a means configured to start and stop photo-induced decomposition of RSNO. Here, the electric current is measured by the oxidation reaction of NO before and after the photo-induced decomposition of RSNO. The amperometric sensor may measure separate signals of RSNO and NO, which are present in the sample at the same time, using one electrode, thereby preventing an inhibition action caused by NO during the measurement of RSNO. Also, the amperometric sensor is simple in structure and easy to manufacture and may be applied to manufacture of a small electrode, and thus may be developed as a sensor for in vivo measurements. | 01-16-2014 |
20140061047 | GAS SENSOR - In an electrochemical gas sensor ( | 03-06-2014 |
20140151225 | ELECTROCHEMICAL DETECTOR AND METHOD FOR PRODUCING SAME - An electrochemical detector is an electrochemical detector for detecting a substance in a liquid by generating a redox cycle, the electrochemical detector comprising: a first working electrode having a first electrode surface, a second working electrode having a second electrode surface, and a plurality of insulating spacer particles, wherein the first and second electrode surfaces are placed so as to face each other so that an electric field is formed between the first and second electrode surfaces, and the plurality of spacer particles are placed along the first and second electrode surfaces so as to separate the first and second electrode surfaces from each other. | 06-05-2014 |
20140174923 | ION SELECTIVE ELECTRODE - A five-part internal reference electrode, including a membrane formed in situ, which is useful in automated clinical chemistry analyzers, the method of forming a direct solid state connection to the membrane eliminating the need for the use of an internal reference electrode internal filling solution, and a ganged assembly of said internal reference electrodes with a grounding unit and an external reference electrode. | 06-26-2014 |
20140174924 | NANOTUBE ELECTROCHEMISTRY - The invention relates to electrodes for electrochemical analysis comprising: —an insulating surface; —carbon nanotubes situated on the insulating surface at a density of at least 0.1 μm | 06-26-2014 |
20140202856 | MINIATURISED ELECTROCHEMICAL SENSOR - A miniaturised electrochemical sensor for detection of a component in a gas is provided. The sensor comprises a reference electrode, a counter electrode and a structure comprising a plurality of passages delineated by walls extending along the passages. A working electrode covers the walls of the structure and a layer of an ionomer covers at least part of the working electrode along the walls of the structure. The layer of ionomer is in ion conducting contact with the electrodes. The disclosure further relates to a method of fabricating a miniaturised electrochemical sensor and to a device for measuring content of NO in exhaled breath comprising such a miniaturised electrochemical sensor. | 07-24-2014 |
20140299469 | SENSOR - A sensor including: a detection element; terminal members; and a separator, wherein at least one specific first electrode terminal portion and an other first electrode terminal portion are formed on a first main surface of the detection element, wherein a second electrode terminal portion formed on a second main surface of the detection element is disposed so as to be offset from the specific first electrode terminal portion and to overlap with the other first electrode terminal portion in the axial direction, and in a thickness direction, a distance between the detection element and a specific first frame body portion brought into electrical connection with the specific first electrode terminal portion is larger than a distance between the detection element and the other first frame body portion brought into electrical connection with the other first electrode portion. | 10-09-2014 |
20140299470 | ELECTROCHEMICAL GAS SENSOR WITH AN IONIC LIQUID AS ELECTROLYTE FOR THE DETECTION OF AMMONIA AND AMINES - An electrochemical gas sensor, particularly for the detection of ammonia and/or amines, with an ionic fluid as an electrolyte, wherein the ionic fluid contains at least one protic ammonium cation with at least one dissociable hydrogen atom, whereby the at least one protic ammonium cation reacts with the ammonia and/or amines to be measured via deprotonation. The present invention also relates to the use of such a gas sensor. | 10-09-2014 |
20140326601 | Analytical Device, Method for Manufacturing the Same, and Measuring Apparatus Using the Same - Provided are an analytical device comprising a pair of hematocrit electrodes (first pair of electrodes) and a pair of glucose electrodes (second pair of electrodes) that allows a sample to sufficiently reach as far as the second pair of electrodes that are provided on a downstream side in a flow path, a method for manufacturing the analytical device, and a measuring apparatus using the analytical device. | 11-06-2014 |
20150014164 | ANALYTE SENSING DEVICE - Analyte sensing devices suitable for measuring pH or other analytes are provided in a variety of form factors, including a hand-held device. | 01-15-2015 |
20150034484 | GAS SENSOR - Provided is a gas sensor capable of accurately obtaining the concentrations of water vapor and carbon dioxide in a measurement gas. A main pumping cell adjusts an oxygen partial pressure of a first internal space such that water vapor and carbon dioxide in the measurement gas are all decomposed in the first internal space. A first measuring pumping cell adjusts an oxygen partial pressure of a second internal space such that hydrogen generated through the decomposition of water vapor is selectively burned. A second measuring pumping cell adjusts an oxygen partial pressure on the surface of a second measuring internal electrode such that carbon monoxide generated through the decomposition of carbon dioxide is all burned on the surface of the second measuring internal electrode. The concentration of water vapor is identified based on the magnitude of a current flowing between a first measuring internal electrode and an external electrode, and the concentration of carbon dioxide is identified based on the magnitude of a current flowing between the second measuring internal electrode and the external electrode. | 02-05-2015 |
20150136600 | GAS SENSING SYSTEM - A gas sensing system includes an air intake hole which comprises a plurality of micro-flow channels, a replaceable sensor for receiving an air from the air intake hole and detecting the received air, and a processing unit coupled to the replaceable sensor and doing determination for the component of the air according to a detection result of the replaceable sensor. Wherein, the replaceable sensor includes a plurality of sensing chips arranged in an array and each sensing chip is coated with a sensing thin film separately to detect a different gas. | 05-21-2015 |
20150346136 | LIQUID SENSOR - A sensor may be provided with a first electrode having a first opposing surface; a second electrode having a second opposing surface opposing the first opposing surface with an interval in between; an insulator accommodating the first electrode and the second electrode, and contacting a contact surface being a part of a surface of the first electrode other than the first opposing surface, or a part of a surface of the second electrode other than the second opposing surface, or a combination thereof; and a shield electrode surrounding the insulator. The shield electrode may have a third opposing surface opposing the contact surface via the insulator. The third opposing surface may contact the insulator. | 12-03-2015 |
20150346137 | LIQUID SENSOR - A liquid sensor may be provided with a lid disposed at an opening of the container, and having an insertion hole; a control circuit; a case housing the control circuit, and being assembled with the lid; a first electrode integrally fixed to the case, and protruding from the case so as to be positioned on a container side of the insertion hole; a second electrode integrally fixed to the lid, and opposing the first electrode with an interval in between; and a terminal extending from the control circuit and piercing the case, and electrically in contact with the second electrode. | 12-03-2015 |
20150346144 | PH METER - Voltammetric sensors prepared from composite materials and optionally using microfabrication techniques enable detection of analyte in sample volumes under ten microliters. | 12-03-2015 |
20150369773 | ELECTROCHEMICAL GAS SENSOR SYSTEM - An electrochemical gas sensor system ( | 12-24-2015 |
20150377831 | DIGITAL MICROFLUIDIC DEVICES AND METHODS EMPLOYING INTEGRATED NANOSTRUCTURED ELECTRODEPOSITED ELECTRODES - Digital microfluidic devices, and methods for the control and fabrication thereof, and provided in which an integrated nanostructured electrodeposited electrode is provided such that the digital microfluidic array can be actuated to contact a droplet with the nanostructured electrodeposited electrode. In some embodiments, digital microfluidic devices are provided having an integrated electrochemical sensor, where the working electrode is provided in the form of a nanostructured electrodeposited electrode. Various methods of fabricating such integrated device are described, including methods that employ a lift-off process that exposes an underlying base electrode for the electrodeposition of a nanostructured electrodeposited electrode, while providing a hydrophobic surface for droplet transport. | 12-31-2015 |
20160033445 | GAS SENSOR WITH PARTITIONED FILTER - A gas sensor including a housing containing a potassium permanganate element sandwiched between two polytetrafluoroethylene elements, a carbon element, a polytetrafluoroethylene element located adjacent to the carbon element, a sensing electrode, a reference electrode, and a counter electrode with attached current collectors, and an electrolyte. | 02-04-2016 |
20160061768 | GAS SENSOR - Provided is a gas sensor having excellent detection sensitivity and responsiveness. In a sensor element, 3.5≦D2/D1≦6 is satisfied, where D1 is a value of a diffusion resistance of a measurement gas via a main gas distribution part extending from an outside edge position of a first gas inlet to the second internal space, and D2 is a value of a diffusion resistance of a measurement gas flowing via a second gas inlet that causes the outside and the second internal space to communicate with each other. The concentration of a predetermined gas component contained in the measurement gas through the second gas inlet is determined on the basis of a potential difference between the sensing electrode and a reference electrode, while pumping oxygen in or out for the measurement gas via the main gas distribution part such that the oxygen concentration of the second internal space is maintained at 1 vol % or more. | 03-03-2016 |
20160077035 | ELECTRODE FOR ELECTROCHEMICAL MEASUREMENT, ELECTROLYSIS CELL FOR ELECTROCHEMICAL MEASUREMENT, ANALYZER FOR ELECTROCHEMICAL MEASUREMENT, AND METHODS FOR PRODUCING SAME - Provided are an electrode, an electrolysis cell, and an electrochemical analyzer that improve the long-term stability of analysis data. A working electrode, a counter electrode, and reference electrode are disposed in an electrolysis cell. The working electrode is obtained by forming a lead wire in a composite material having platinum or a platinum alloy as a base material, in which a metal oxide is dispersed, or in a laminated material obtained by laminating a valve metal and platinum such that the cross sectional crystal texture in the thickness direction of the platinum is formed in layers and the thickness of each layer of the platinum is 5 micrometers or less. The metal oxide is selected from among zirconium oxide, tantalum oxide, and niobium oxide, and the metal oxide content of the platinum or the platinum alloy is 0.005 to 1 wt % in terms of the zirconium, tantalum, or niobium metal. | 03-17-2016 |
20160103091 | CONTROLLED POTENTIAL ELECTROLYSIS GAS SENSOR - A controlled potential electrolysis gas sensor including, as gas electrodes | 04-14-2016 |
20160123915 | PHOTOELECTROCHEMICAL ASSAY APPARATUS FOR DETERMINING CHEMICAL OXYGEN DEMAND - The present disclosure discloses a chemical oxygen demand detection apparatus. In the apparatus, a working electrode, which is included TiO | 05-05-2016 |
20160178565 | GAS SENSOR WITH SOLID ELECTROLYTE HAVING WATER VAPOR DIFFUSION BARRIER COATING | 06-23-2016 |
20160187284 | MULTI-PORE SILICON SUBSTRATE AND BIOTECHNOLOGICAL TEST STRIP WITH THE MULTI-PORE SILICON SUBSTRATE - A multi-pore silicon substrate and a biotechnological test strip with the multi-pore silicon substrate. The multi-pore silicon substrate includes a main body. The main body has a first side, a second side and multiple pores. The pores pass through the main body, respectively. Two ends of each pore communicate with the first and second sides of the main body. The multi-pore silicon substrate is applied to a biotechnological test strip necessitating the multi-pore silicon substrate. The biotechnological test strip with the multi-pore silicon substrate improves the shortcomings of the conventional in vitro test strip that it is uneasy to manufacture the test strip and the blood filtering effect is poor. Also, the biotechnological test strip with the multi-pore silicon substrate is manufactured at much lower cost and the reservation period of the biotechnological test strip with the multi-pore silicon substrate is prolonged. | 06-30-2016 |