Horiba, Ltd.

Other

Katsuhiko Tomita

Haruo Kotani

Tsuyoshi Nakanishi

Hiroki Tanabe

Takaaki Yada

Junji Kojima

Susumu Mimura

Satoshi Nomura

Kazuaki Sawada

Akemi Mototsune

Kimio Miyatake

Hirofumi Akano

Tetsuo Shimizu

Kazuo Nakajima

Takeshi Kohno

Toshihiko Uno

Tomoaki Fukushige

Toshiyuki Kuritani

Yoko Ogihara

Syuji Takamatsu

Hiroshi Iwasaki

Masaichi Bandoh

Ken Katsuki

Masaru Okada

Masami Nakane

A molecular recognition layer is formed on a sensor face of a chemical CCD having such a structure that a plurality of potential wells constituted to change a depth corresponding to a chemical quantity are arranged two-dimensionally, electric charges are injected into the potential wells , and the chemical quantity is converted into an electric charge corresponding to the sizes of the potential wells. Thus, it is provided a novel and useful molecular recognition type chemical CCD capable of measuring an ultramicro chemical substance with an ultrahigh sensitivity at a molecular level.

Molecular recognition type chemical CCD

A detector assembly for detecting a plurality of different properties at the same location at the same time is provided by integrating onto a single semiconductor substrate a first detector unit for measuring a first property and a second detector unit for measuring a second property. The first and second detector units can share, for example, a common element, such as a sensor device that can provide electrical output signals representative of, respectively, the first property and the second property. The common element can include a diaphragm with a pyroelectric element to provide a measurement of temperature and pressure.

Multiple detecting apparatus for physical phenomenon and/or chemical phenomenon

Method and equipment easily visualize various physical phenomena or chemical phenomena by simultaneously taking in, accumulating, and transferring data at a plurality of points. Electric charge is injected in potential wells constructed to vary the depth in accord with the magnitude of the physical or chemical quantity, and the physical or chemical quantity is converted into electric charge according to the depth of the potential wells.

Apparatus for measuring physical and chemical phenomena

A method of measuring microbial activity of microbes in real time includes preparing a medium to enable microbial activity and placing the medium in operative contact with an appropriate sensor. The sensor is scanned to provide measurement electrical signals representative of position and amount of microbial activity, the sensor being responsive to a by-product of the microbial activity, such as a change in pH. The measurement signals can then be processed to provide a visual image display, and the display can visually distinguish between levels of pH activity and coordinate positions of the microbial activity.

Process for visually measuring a microbial activity state during real

A pH sensor having an ISFET is provided on a crystalline substrate of silicon with a thin film of aluminum oxide formed to have epitaxial growth with an overlaying thin film of silicon epitaxial grown on the aluminum oxide layer. A source element and a drain element are provided on the silicon film, and a pH responsive film layer is connected to the source and drain. The pH sensor can be accompanied with appropriate circuitry also integrally formed on the same epitaxial SOI substrate.

Semiconductor PH sensor and circuit and method of making same

A method of measuring temperature by the use of an infrared sensor is capable of measuring temperature with high accuracy without being influenced by thermal drifts due to conditions of the atmosphere and environment before the start of measurement. An infrared sensor is associated with a normally closed shutter. The shutter includes a plurality of openings, such that one starting signal provided to the shutter produces a plurality of output signals from the infrared sensor 6 by a single reciprocating motion of the shutter. The first signal is excluded or averaged with the subsequent signals in calculating temperature.

Method of measuring temperature by use of an infrared sensor

A method of producing a pH-responsive membrane by coating a substrate with an anhydrous coating solution of tantalum alkoxide. In a first preferred embodiment, an anhydrous tantalum alkoxide solution is deposited drop by drop on a surface of an electrode substrate which is rapidly rotating to form a film of tantalum alkoxide. After drying to remove the solvent, the electrode is baked to decompose the tantalum alkoxide, thereby forming a pH-responsive membrane of tantalum pentoxide. The thickness of this membrane can be controlled by altering the speed of substrate rotation and the volume of coating solution deposited thereon. In a second preferred embodiment, an electrode substrate is immersed in an anhydrous coating solution of a tantalum alkoxide followed by pulling the electrode substrate from the solution at a controlled rate to form a tantalum alkoxide film which is then converted to a pH-responsive membrane of tantalum pentoxide by drying and baking.

Method of producing a pH-responsive membrane

A compact infrared gas analyzer capable of reducing the quantity of heat generated from a radiation source and the effects of temperature on samples is provided. A shutter is provided between the radiation source and the sample cell and/or between the sample cell and a detector with the shutter in a closed position. The shutter is opened and closed during measurement. A resistor comprising a resistance element made of one of RuO.sub.2, W, SnO.sub.2, FeCrAlY, Pt, Pt-Rh and Pt-Pd, formed on an AlN substrate, may be used as the radiation source, with the radiation source and the shutter being interrelatedly controlled.

Infrared gas analyzer

An improved compact ion-concentration measuring apparatus having a removable sample testing module with gelatinized electrodes. The gelatinized portion of the electrodes can be formed with a jelly containing an acrylic polymer with sodium.

Removable sample testing member for use in measuring ion concentration

A thin film made of a sol solution of noble metal alcoxides is formed on a substrate and then dried and baked in a reductive or oxidative atmosphere to produce a thin film of metals or metal oxides. The solution of noble metal alcoxides may contain merely a single component or a plurality of components. In addition, a solution of metal alcoxides with noble metal alcoxides as main components or additives may be used in place of the solution of noble metal alcoxides. The thin film of metals or metal oxides can be formed in a single layer or a plurality of layers on a substrate to improve, for example, the response of a sensor.

Method of producing metallic thin film sensors

A removable gelatinized calibration member is provided for use in storing or calibrating an ion concentration measuring device having measuring electrodes located in a concave measuring portion. The gelatinized calibration member is provided in the same shape as the concave measuring portion so that it may be removably placed onto the measuring device electrodes. The gelatinized calibration member may be a discrete pad or it may be provided in a rod-like configuration that can be moved in and out of a cylindrical housing.

Gelatinized member for use in electrodes measuring ion concentration

An apparatus for the simultaneous measurement of a plurality of ionic concentrations can utilize a test station having a common support sheet for supporting a plurality of ion selective electrodes, reference electrode and pH responsive electrode. Simultaneous measurements can be taken at the same time from a single sample and the pH reference electrode can validate the operative range of an ion selective electrode.

Apparatus for simultaneous measurement of a plurality of ionic

A sheet-type, highly polymerized composite electrode used for measuring ionic concentration includes a thin film ion-selective responsive membrane formed on an upper surface of an insulating support layer by sequentially dripping an ion-selective responsive membrane paste containing solvent onto the support layer. The ion-selective responsive paste has a polymerization degree sufficient to provide an enduring ion-responsive membrane without any reinforcing structure.

Sheet-type electrode for use in the measurement of ion concentration

The present invention is characterized by a solid body disposed so that a remarkably small gap may be formed between it and a surface of an electrode. A super-thin liquid membrane is formed in the small gap by an interfacial tension of a liquid. An object to be measured is applied to or acted upon either the solid body or the super-thin liquid membrane. An electric signal due to the physical properties of the super-thin liquid membrane itself or an electric signal due to a chemical or physical reaction, which is generated on an interface of the solid body and the super-thin liquid membrane and diffused through the super-thin liquid membrane itself, is detected by means of the electrode to measure the physical properties of the object to be measured.

Method of measuring physical properties by super-thin liquid membrane

A method of measuring an ion-concentration characterized by a sample absorbed in an easily absorbing solution material and the absorbing material is brought into contact with a measuring portion to measure an ion-concentration 10/90 in the sample so that a highly accurate measurement can be achieved even though a quantity of the sample is small. In addition, the desired measurement can be carried out without using any instruments for sampling and needing any complicated pretreatments. A sheet for use in the calibration of an ion-concentration 10/90 measuring device characterized by a calibrating buffer solution absorbed in a chemically stabilized, hygroscopic, water-absorbing sheet eluting no ions and then the water-absorbing sheet is dried.

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Kyoto, Japan

Katsuhiko Tomita