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7389673 |
Sensor for detecting analyte in liquid and device for detecting analyte in liquid using the same
A sensor for detecting an analyte in liquid includes a base substrate provided with openings and electrode lands on one surface thereof and SAW elements each provided with a sensing portion having...
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7387010 |
Sensor arrangement having sensor array provided on upper portion of a container
A chemical sensing system has: an interrogation unit operable to wirelessly transmit an interrogation signal and wirelessly receive a response; an environmentally sealed container for holding a...
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7350367 |
Environmental control system fluid sensing system and method
A system for monitoring a fluid in an environmental control system includes a mechanical resonator positioned for contacting a thermal change fluid. In some embodiments, the mechanical resonator is...
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7340941 |
Dense thin film-based chemical sensors and methods for making and using same
Sensors for determining the ambient amount (e.g., concentration) of a chemical (e.g., molecular hydrogen in a gas or vapor) are disclosed. Preferred embodiments of these sensors comprise a dense...
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7331231 |
Apparatus and method for measuring micro mass using oscillation circuit
A micro mass measuring apparatus includes a cantilever on which a subject is attached, a piezoelectric element formed on the cantilever, an oscillation circuit for actively vibrating the cantilever...
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7302829 |
Contactless humidity/chemical vapor sensor device and associated method of fabrication
The invention provides a contactless sensor device operable for sensing water vapor or a predetermined chemical vapor including a thin film, wherein the thin film includes a nanostructured sensing...
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7299678 |
Sensor apparatus
A measurement head particularly for borehole use can measure multiple parameters with no electronics in the head and only a single conductor cable. Double-ended tuning forks ( 26, 28 and 38, 40 )...
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7268662 |
Passive SAW-based hydrogen sensor and system
A hydrogen detecting system is characterized by a passive surface acoustic wave (SAW) sensor. The sensor includes a piezoelectric substrate having a self assembled monolayer arranged on at least a...
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7266989 |
Sensor system for high-precision measurements of temperature, composition, and/or pressure of a fluid
A sensor system immersible in an ambient-fluid for sensing at least two conditions of the ambient fluid, includes a sealed chamber filled with a reference fluid of a known composition and/or...
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7213444 |
Optoacoustic gas sensor
An optoacoustic sensor for detecting one or more target gases includes a body featuring halves containing measurement cells. Each measurement cell is in communication with a light source and a...
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7201035 |
Sensor arrangement
A chemical sensing system has: an interrogation unit operable to wirelessly transmit an interrogation signal and wirelessly receive a response; an environmentally sealed container for holding a...
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7201034 |
Gas concentration measurement instrument and gas concentration measurement method
A gas concentration measurement instrument comprises: ultrasonic wave transmitting means for transmitting an ultrasonic wave according to an ultrasonic wave generation signal composed of a group of...
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7197942 |
Apparatus for measuring velocity and flow rate of a fluid having a non-negligible axial mach number using an array of sensors
An apparatus 10 and method is provided that includes a spatial array of unsteady pressure sensors 15–18 placed at predetermined axial locations x 1 –x N disposed axially along a pipe 14 ...
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7194909 |
Pressure and vibration sensing apparatus
A pressure and vibration sensing apparatus designed to sense pressure together with vibration through one apparatus. The pressure and vibration sensing apparatus includes a case adapted to be...
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7194891 |
High-temperature gas sensors
A method of sensing the amount of a gas in a fluid flow includes operating an acoustic wave (AW) sensor at a first resonant frequency. The AW sensor includes a high temperature stable piezoelectric...
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7178378 |
Resonant sensor and sensing system
The disclosed sensor chip includes a substrate and a moving member coupled to the substrate and disposed for movement relative to the substrate. The moving member moves relative to the substrate in...
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7174767 |
Particulate matter analyzer and method of analysis
An apparatus and method for the analysis of particles in an aerosol includes providing an inlet for the aerosol, a sample collector which accumulates particles passing through the inlet, a sample...
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7146857 |
Real time analysis for gas mixtures
The invention is concerned with a method and apparatus for real time analysis of gas mixtures, e g determination of air quality, including at least one resonator ( 1, 11 ), means for gas...
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7143632 |
Gas detecting method, and gas detecting device
An electronic signal relating to a sonic wave when an intended gas does not exist in air is synchronized and locked in a feedback circuit constituting a phase-locked loop (PLL). Then, an electronic...
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7127936 |
Acoustic analysis of gas mixtures
An acoustic gas analyzer for gas mixture has an acoustic velocity meter that provides a first output dependent on a detected transmission of acoustic energy through a gas to be analyzed, a...
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7127934 |
Methods, systems, circuits, and computer program products for determining polarization of a gas
A system for determining polarization of a gas comprises a container that contains the polarized gas. An oscillator circuit comprises an NMR coil that is positioned adjacent to the container. A...
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7111495 |
Sensor based on surface components with capacitative coupling of the high frequency connections
In a sensor on the basis of surface wave components disposed in a housing with at least one surface wave component, a fluid channel and conductors for high frequency signals, the conductors are...
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7091869 |
Optoacoustic measuring arrangement and use thereof
The measuring arrangement contains a measuring cell and a reference cell, respectively, and microphones assigned to these cells, to which microphones an electronic evaluation circuit is connected...
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7082810 |
Gas sensor
A gas sensor ( 10 ) including a measurement chamber ( 28 ) into which a gas GS is flown and a detection element main body ( 40 ) facing the measurement chamber ( 28 ). The detection element main...
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7081745 |
Paramagnetic oxygen sensing apparatus and method
A paramagnetic oxygen sensor and method employs a pressure sensor having a membrane extending through an air gap for a magnetic field. A piezoelectric element is mounted on the membrane. Gas...
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7047792 |
Surface acoustic wave hydrogen sensor
The present invention provides a delay line SAW device fabricated on a lithium niobate substrate and coated with a bilayer of nanocrystalline or other nanomaterials such as nanoparticles or...
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6997039 |
Carbon nanotube based resonant-circuit sensor
Disclosed are resonant gas sensors and methods for forming and using the disclosed sensors. The sensors include a resonator including a layer comprising adsorptive nanostructures, for example...
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6978656 |
Transducer-based sensor system and method
A system and method for performing rupture event scanning and other sensing operations on a sample. The method includes providing a transducer with an immobilized binding partner material and a...
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6962071 |
Method for improved measurement of local physical parameters in a fluid-filled cavity
The present invention relates to remotely determining local physical parameters in a fluid-filled cavity (e.g. heart cavities, blood vessels, industrial container) by means of ultrasound waves and...
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6935158 |
MIS hydrogen sensors
Hydrogen gas sensors employ an epitaxial layer of the thermodynamically stable form of aluminum nitride (AlN) as the “insulator” in an MIS structure having a thin metal gate electrode suitable...
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6931913 |
Chemical agent detector
A chemical agent detector utilizing surface acoustic wave (SAW) sensors for detecting the presence of a multitude of chemical agents by sampling ambient air is provided. A pressure-differential...
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6892566 |
Gas concentration sensor
A gas concentration sensor includes a measurement chamber for measuring a concentration of a specific gas component in a gas under measurement; an inflow path for allowing inflow of the gas under...
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6892565 |
Gas sensor and gas concentration detecting device
A gas sensor includes an element case 42 with an internal peripheral surface formed as a taper surface 100 . A portion of a housing section 43 surrounded by the taper surface 100 and a...
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6886412 |
Ultrasonic-wave propagation-time measuring method and gas concentration sensor
An ultrasonic-wave propagation-time measuring method and gas concentration sensor are disclosed in which a reception wave which has been transmitted and received by an ultrasonic element 5 is...
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6848295 |
Acoustic wave sensor apparatus, method and system using wide bandgap materials
An acoustic wave sensor to detect an analyte, the sensor comprising a piezoelectric material including a wide bandgap semiconductor material grown using plasma source molecular beam epitaxy.
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6843101 |
CO2 sensor
A sensor for the measurement of carbon dioxide concentration within an air flow being input to a measuring cell ( 1 ) connected to at least one electroacoustic element ( 2, 3 ) for transmitting and...
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6823715 |
Gas concentration measuring apparatus and method
A gas-concentration measuring apparatus for measuring the concentration variation of gas residing in a target region. The gas-concentration measuring apparatus comprises an ultrasound-transmitter...
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6820462 |
Acoustic gas monitor
An acoustic gas monitor has a measurement chamber into which a reference gas of known composition is received and is provided with a wall section for the selective transmission of a gaseous...
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6784381 |
Method of manufacturing a microbalance
22 A temperature and/or pressure compensated microbalance is disclosed. Temperature compensation is achieved by applying heat to at least a part of the microbalance, measuring a...
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6718270 |
Vibration testing device and vibration response evaluating method
A vibration testing device includes a computer system having: a measurement processing block for inputting an output of the monitoring sensor and processing the output; a model substituting block...
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6715339 |
Self-normalizing flow sensor and method for the same
An apparatus to normalize a flow rate of a fluid in a main flow channel is provided. The apparatus uses a movable member, such as a flexible membrane disposed for reciprocating displacement, to...
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6706977 |
Self-monitoring controller for quartz crystal microbalance sensors
A controller for a quartz crystal microbalance (QCM) sensor system and method for detecting mass deposition on a QCM sensor. The controller controls a QCM using temperature-, voltage- and...
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6680994 |
Monitoring the contents of a container by ultrasonic means
The contents of a container 1 are non-intrusively monitored by probing the container with an ultrasonic signal, and measuring changes in the ultrasound signature of the received signal after the...
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6668618 |
Systems and methods of monitoring thin film deposition
Systems and methods of monitoring thin film deposition are described. In one aspect, a thin film deposition sensor includes an acoustical resonator (e.g., a thin film bulk acoustical resonator)...
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6640613 |
Method for producing surface acoustic wave sensors and such a surface acoustic wave sensor
In a method for producing surface wave sensors on the basis of a surface wave building component a polymer parylene film with a thickness of 20 to 200 nm is applied to a hydrophilic sensor surface...
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6626026 |
Acoustic wave based sensor
An apparatus that is configured to sense the presence of gases, vapors and liquids using acoustic waves. The apparatus comprises a first part that is configured to generate acoustic waves. The...
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6581452 |
Apparatus for measuring volume under microgravity
Volume measuring apparatus is used in a closed space as in the case of volume measurement of liquid in a container placed on an orbit of an artificial satellite and permits the volume measurement...
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6568248 |
Method and apparatus for thermodynamic analysis of a mixture of fluids
The invention relates to a method and to apparatus for thermodynamic analysis of a mixture of fluids, in which the volume of a sample of a given quantity of said mixture is caused to vary step by...
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6526828 |
Sensitive and selective method and device for the detection of trace amounts of a substance
A piezoelectric crystal element and a sensor utilizing the same are presented for use in a sensor device for identifying at least one foreign material from environment. The crystal element...
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6523392 |
Microcantilever sensor
An apparatus and method for sensing chemical and/or biological analytes includes a deflectable arm of a microcantilever formed over and contacting a sensing element. A gaseous or liquid medium...
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