Toyohashi University of Technology

Sintokogio, Ltd.

National University Corporation Toyohashi University of Technology

Other

Seiko Instruments Inc

Sharp Kabushiki Kaisha Corporation

Hamamatsu-photonics K.k.

Japan Science and Technology Agency

Japan Science and Technology Corporation

Biox Corporation

National University Corporation Toyohashi Universi

National University Corp Toyohashi University

Kazuaki Sawada

Seiichiro Mizuno

Junichi Matsuo

Makoto Ishida

Fumihiro Dasai

Toshihiko Noda

Minoru Sudo

Yoshihisa Suzuki

Hidekuni Takao

Masato Futagawa

Toshiki Wakamori

Daisuke Akai

Yuki Maruyama

Hirokazu Nakazawa

Manase Mizutani

Satoshi Saitoh

Hiroo Yamamoto

Toshio Yoshida

Tomohiro Konishi

Hideki Muto

Kenichi Nagai

Shinichi Nakahigashi

Masakatsu Uchiyama

Yiping Guo

Keisuke Hirabayashi

Mikako Yokawa

Takeshi Hizawa

Sou Takahashi

Kazuhiro Takahashi

Hiroki Oyama

A gas measuring device includes: a gas rectification unit configured to rectify gas to control traveling directions and traveling speeds of gas molecules based on molecular weights of the gas molecules; and a gas sensor configured to absorb the gas molecules of the gas rectified by the gas rectification unit, and to detect absorption positions and absorption amounts.

Gas measuring device and gas measuring system

A gas measuring device includes a gas chamber into which a sample gas containing a target gas is introduced, a gas detection unit configured to detect the target gas contained in the sample gas introduced into the gas chamber, an irradiation unit configured to apply polarized light to the sample gas introduced into the gas chamber using a polarizer, an optical rotation measurement unit configured to measure optical rotation between the polarized light applied from the irradiation unit to the sample gas and the polarized light that has been transmitted through the sample gas using an analyzer, and an output unit configured to output information on the target gas detected by the gas detection unit and information on the optical rotation of the polarized light detected by the optical rotation measurement unit in association with each other.

Gas measuring device and gas measuring method

The gas measurement device includes a filter having a plurality of openings, each opening being variable in size, an adjustment mechanism configured to vary size of the plurality of openings, a first gas sensor configured to detect gas molecules passing through an opening of the filter and output a first measurement value corresponding to the detected gas molecules, and a second gas sensor configured to detect the gas molecules passing through the opening of the filter, output a second measurement value corresponding to the detected gas molecules, and detect gas molecules of a gas species different from the gas molecules detected by the second gas sensor.

Gas measurement device and gas measurement method

The gas measurement device includes a catalyst member connected to a power source applying voltage or current, performing a reaction of a first gas and a second gas contained in a mixed gas contacted with the catalyst member to generate a third gas, and exhibiting a catalytic action in which the reaction changes in response to temperature, and a gas sensor configured to detect gas molecules contacted with the catalyst member.

The gas measurement device includes a gas sensor disposed in a gas chamber, a filter configured to control passing gas molecules to the gas chamber, and a driving unit configured to move at least a part of a member defining the gas chamber.

Gas measurement device having variable volume

A smell sensor includes an ion sensor in which a sensing section provided with a sensitive film configured to change a potential in accordance with a state of a measurement target is formed on a semiconductor substrate; a substance adsorption film disposed on the sensitive film and configured to change the state with adsorption of a smell substance; and a reference electrode configured to apply a reference voltage to the substance adsorption film. The reference electrode is disposed to be separated from the sensitive film and not to overlap the sensing section when viewed in a thickness direction of the semiconductor substrate.

Odor sensor and method for manufacturing odor sensor

An ion concentration distribution measurement device includes a unit detection element for outputting charges of an amount according to an ion concentration, and an integration circuit for outputting a signal value according to the amount of charges which are output from the unit detection element. The unit detection element includes a MOS transistor, an ion sensitive portion, a first capacitive portion, and a transfer switch. The integration circuit includes an amplifier, a second capacitive portion, and a reset switch.

Ion concentration distribution measuring device

Proposed is a device for detecting a chemical/physical phenomenon, in which, via a novel scheme, charges are accumulated in a charge accumulation region. An amount of charges thus accumulated reflects the potential of a sensing region and the potential corresponds to an external environment (chemical phenomenon or physical phenomenon) to be detected. A charge accumulation regionincludes a first potential well region FDthat is continuous with a sensing region, the boundary potential of the charges held in the first potential well region FDbeing made equal to the potential of the sensing region, whereby the potential of the sensing regionis made to be reflected in the amount of charges held in the first potential well region FD

Device for detecting chemical/physical phenomenon

Provided is an ion sensor including a supporting substrate, a plurality of cells, a silicon substrate, a plurality of transistors, and an analog-digital conversion circuit. The plurality of cells, the plurality of transistors, and the analog-digital conversion circuit are provided above the supporting substrate. Each of the plurality of transistors has a corresponding gate provided on a first surface of the silicon substrate. The analog-digital conversion circuit is provided on the silicon substrate. The ion-sensing surface is provided on a second surface of the silicon substrate. The second surface is opposite to the first surface.

Ion concentration sensor

An ion sensor is configured such that part of a P well on which part a sensing section is provided is different, in dopant concentration, from the other part of the P well so that electric charges are injected merely to the sensing section in a state where a voltage is applied to an N-type substrate.

Chemical/physical phenomenon detecting device and method of producing the same

Provided is a charge-transfer-type sensor suitable for high integration while eliminating a potential barrier. A sensor provided with a semiconductor substratepartitioned into a sensing regionin which a potential varies in corresponding fashion to a variation in the external environment, a charge input regionfor supplying charges to the sensing region, an input charge control regioninterposed between the sensing regionand the charge input region, and a charge accumulation regionfor accumulating electric charges transported from the sensing region, the sensor for detecting the amount of electric charges accumulated in the charge accumulation region, wherein a diffusion layeris formed between the input charge control regionand the sensing regionof the substrate, and dopants for producing charges having the same polarity as the charges supplied from the charge input regionare diffused in the diffusion layer

Device for detecting chemical/physical phenomenon having a diffusion layer formed between an input charge control region and a sensing region on a substrate

The purpose of the present invention is to measure pH of a sample with high accuracy in a pH sensor array, without the use of a glass reference electrode. Each time that a sample is measured, the potential Vrm of the sample is identified, and the identified potential Vrm is used to calculate the pH. The outputs Voiand Voiof a first element and a second element located near one another in a sensor array are represented as follows. Voi=Si&#xd7;pHi+Gi&#xd7;Vrm+Ci, Voi=Si&#xd7;pHi+Gi&#xd7;Vrm+Ci. Voi is the output of the element, Si and Gi are sensitivity coefficients, and Ci is a constant, these values having been derived in advance. Here, where the potential Vrm is constant, and the elements located near one another are presumed to be at equal pH (pHi=pHi), the potential Vrm is identified by solving a linear equation with two unknowns.

Method for identifying pH, device for same, and method for identifying ion concentration

Provided are a device for detecting chemical and physical phenomenon suitable for high integration, and a method therefor. Rather than using a TG section signal to select pixels that require charge measurement, the on-off timing (the timing for moving the charge from a sensing section to an FD section) of the TG section is harmonized for all pixels, and the release or injection of the charge to the sensing section is separately controlled, whereby the charge is held only in sensing sections of pixels that require charge measurement, and the charge is emptied in sensing sections of pixels that do not require charge measurement. In this state, the TG section of all pixels can be opened at the same time, whereby the charge is transferred to the FD section from only the sensing sections holding a charge, and the charge level of the pixel is detected.

Method for detecting chemical and physical phenomenon, and device therefor

Provided is a small-sized device for measuring an oxidation-reduction potential, whereby an oxidation-reduction current and an oxidation-reduction potential can be measured by reducing noise even when a signal from a solution being measured is small. A device for measuring an oxidation-reduction potential is provided with a substrate (), a working electrode () mounted on a surface of the substrate (), and a bipolar transistor () for amplifying the output of the working electrode () also provided on the surface of the substrate (), and the signal amplified by the bipolar transistor () is inputted to a processing circuit ().

Device for measuring oxidation-reduction potential and method for measuring oxidation-reduction potential

Provided is a device adapted for detecting chemical and physical phenomena and suitable for high integration, and a method for controlling the detection device. When a plurality of pH-detecting devices are used, a variation in sensitivity occurs in each of the sensing units. The variation in sensitivity can be calibrated using a simple method. The amount of charge (output signal) delivered by each of the sensing units to a standard solution is determined, and the difference between the delivered charge amount and a standard charge amount (standard output signal) delivered by a standard sensing unit is determined. The capacity of the potential well of the sensing unit is changed, or the potential of a TG unit when a charge is delivered is changed, so as to cancel out the difference.

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Toyohashi, Japan

Kazuaki Sawada