Detector Detail Patents (Class 73/24.06)
  • Patent number: 10444133
    Abstract: A sample in a gas state to be measured is forced to impinge on a structure in which a change in a characteristic including a mechanical deformation, an optical change, an electric change and a magnetic change is exerted due to the impingement of a gaseous sample, a gasified liquid sample or solid sample to cause at least one of changes in characteristics including a mechanical deformation, an optical change, an electric change and a magnetic change; and the molecular weight of the sample in a gas state is obtained.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: October 15, 2019
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Genki Yoshikawa, Kota Shiba
  • Patent number: 10094778
    Abstract: An integrated system for monitoring a chemical concentration in an ionic liquid, comprising: a. an online FTIR instrument with an ATR window; b. a sample conditioning station that removes light hydrocarbons and produces a degassed ionic liquid that is analyzed by FTIR; and c. a solvent flushing system that flows solvent across the ATR window. Also, a process for monitoring the chemical concentration, comprising: a. degassing the ionic liquid in the sample conditioning station; b. passing the degassed ionic liquid over an ATR window; c. periodically redirecting a flow of the degassed ionic liquid via a bypass line or an on-off valve that isolates the ATR window from the process unit that elutes the ionic liquid; and d. flowing a solvent and a purging gas over the ATR window during the periodically redirecting step c); and e. resuming the passing of the degassed ionic liquid over the ATR window.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: October 9, 2018
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Hye-Kyung Cho Timken, Toni Zhang Miao, Howard Steven Lacheen, Bi-Zeng Zhan
  • Patent number: 10024813
    Abstract: A gas detection apparatus (1) which includes a gas detection element (3) including a heat generation resistor (34); an energization control section (7) which switches the energization state of the heat generation resistor to alternately assume one of two resistance values corresponding to one of two set temperatures set in advance; and a casing member (90) which accommodates the gas detection element and has a gas inlet opening (92h). The gas detection apparatus further includes a humidity computation section (7) which computes the humidity of the object atmosphere based on a ratio of a high-temperature-time voltage VH to a low-temperature-time voltage VL; and a clogging determination section (7) which determines the degree of clogging of the gas inlet opening based on a change in the humidity computed by the humidity computation section.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: July 17, 2018
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Yusuke Matsukura, Shoji Kitanoya, Masaya Watanabe
  • Patent number: 9939412
    Abstract: Devices, systems, and methods for sensing one or more odorants are disclosed. The device may include an oscillator crystal coated with a polymer. The oscillator crystal may typically oscillate at a known first frequency. The coated crystal may respond to exposure to an odorant by oscillating at one or more alternative frequencies. The coated crystal response may depend on the polymer composition, polymer concentration, coating geometry, and/or odorant to which it may be exposed. The system may include one or more oscillator crystals, each coated with a different polymer composition, polymer concentration, and/or coating geometry. The system may include non-coated crystals. The system may also include additional electronics to measure the frequencies of the one or more coated or non-coated crystals and to analyze their frequencies. The method may include the use of such devices and/or systems to identify and/or determine the concentration of one or more odorants.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: April 10, 2018
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventors: Naoya Ichimura, Tatsuaki Hirase
  • Patent number: 9869659
    Abstract: An acoustic sensor includes a side wall, closed at each end by an end wall, to form a substantially cylindrical cavity, a transmitter and a receiver operatively associated with first and second respective end walls. Properties of the relative dimensions of the cavity are configured to create a desired oscillatory motion of the end walls, and oscillations of a fluid pressure in the cavity, to generate an electrical signal via the receiver to be output from the sensor. An array of acoustic sensors can be connected to allow calibration of one of the array of sensors.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: January 16, 2018
    Assignee: The Technology Partnership PLC.
    Inventors: Justin Rorke Buckland, Andrew Robert Campbell
  • Patent number: 9803882
    Abstract: An electronic device may include a housing and a printed circuit board, where the housing has a front cover and a back cover that at least substantially enclose the printed circuit board. In some instances, the back cover may include an outer shell and one or more inward extending walls that extend inwardly toward the printed circuit board. In some cases, the inward extending walls, the outer shell, and the printed circuit board define two or more internal pockets within the housing. The pockets may, in some cases, separate one region of the printed circuit board from another region of the printed circuit board. In some instances, the one or more inward extending walls may be configured to provide support to a back side of the printed circuit board, which may be particularly useful when a touch screen display is mounted on a front side of the printed circuit board.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: October 31, 2017
    Assignee: Honeywell International Inc.
    Inventors: Tarik Khoury, Petr Adamik, Tracy Lentz, Steven J. Mcpherson, Mohammad Aljabari, Arnie Kalla
  • Patent number: 9762204
    Abstract: A piezoelectric resonator for use in a sensor arrangement for detecting or measuring an analyte in a medium, comprises a quartz crystal plate, having a first crystal surface and a second crystal surface. The first crystal surface is provided with a first electrode, which has a surface area of less than 15 mm2 and the second crystal surface is provided with a second electrode. The first electrode may have a rectangular surface shape. A flow cell for use in an apparatus for detecting or measuring an analyte in a medium, comprises walls that form a sensing chamber together with the resonator, and inlet and outlet openings for leading a fluid through the sensing chamber. A part of the resonator constitutes one of the walls of the sensing chamber and is arranged such that the first electrode is situated inside the sensing chamber.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: September 12, 2017
    Assignee: ATTANA AB
    Inventors: Teodor Aastrup, Jan Smith, Henrik Anderson
  • Patent number: 9341597
    Abstract: In general, the present disclosure is directed toward a novel hybrid spintronic device for converting chemical absorption into a change in magnetoresistance. This device uses a novel magnetic material which depends on the attachment of an organic structure to a metallic film for its magnetism. Changes in the chemical environment lead to absorption on the surface of this organometallic bilayer and thus modify its magnetic properties. The change in magnetic properties, in turn, leads to a change in the resistance of a magnetoresistive structure or a spin transistor structure, allowing a standard electrical detection of the chemical change in the sensor surface.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: May 17, 2016
    Assignee: University of South Carolina
    Inventors: Thomas M. Crawford, Samir Y. Garzon
  • Patent number: 9291594
    Abstract: The present disclosure relates to a carbon dioxide sensor able to function in harsh environment, conditions. The carbon dioxide sensor can include a gate-less field effect transistor including a synthetic, quasi-intrinsic, hydrogen-passivated, single-crystal diamond layer exhibiting a 2-dimension hole gas effect, and a sensing layer comprising both a polymer and a hygroscopic material deposited onto a surface of the gate-less field effect transistor.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: March 22, 2016
    Assignee: Honeywell International Inc.
    Inventors: Mihai Brezeanu, Bogdan Catalin Serban, Octavian Buiu, Viorel Georgel Dumitru
  • Patent number: 9140671
    Abstract: A quantitative sensor and manufacture method thereof are disclosed. This quantitative sensor has a dual-mode film bulk acoustic resonator structure to achieve desirable performances in sensitivity, accuracy and efficiency. Furthermore, this quantitative sensor serves as a fluid sensor when a fluid detection metal layer is formed in a sample-receiving chamber; and this quantitative sensor may also serve as a bio sensor when biocompatible metal layer and a bio-sensing layer are formed in the sample-receiving chamber instead of the fluid detection metal layer.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: September 22, 2015
    Inventors: Ying-Chung Chen, Chien-Chuan Cheng, Wei-Tsai Chang, Kuo-Sheng Kao, Re-Ching Lin, Jia-Ming Jiang, Chun-Hung Yang
  • Patent number: 9119748
    Abstract: An electronic discriminating device incorporating a non-contact electronic sensor array, a controller, and a signaling device that may indicate the presence of urine and/or bowel movement is disclosed. In particular, the electronic discriminating device can discriminate between an insult of urine only and an insult containing bowel movement. The device can then generate different alerts based on the type of insult. The electronic discriminating device may also emit a signal at or near the opening of an absorbent article or transmit the alert wirelessly to a radio, computer device, or smartphone.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: September 1, 2015
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Jose K. Abraham, Davis Dang Hoang Nhan, Theodore T. Tower, Candace Dyan Krautkramer, Kathy Geralyn Richardson, John Gavin MacDonald
  • Patent number: 9032780
    Abstract: A gas detector can be releasibly coupled to one of a group of elongated probes each of the probes includes a detector connecting end and a gas in flow/outflow end. The connecting end includes a helical attaching feature which when coupled to the detector defies a plurality of spaced apart angular locking positions. A locking position is selected in response to a flow of air in an adjacent duct to which the detector is being attached. Where the detector carries an elongated display device, the locking position can be selected so that the display device exhibits a desired presentation.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: May 19, 2015
    Assignee: Honeywell International Inc.
    Inventors: Randy Anderson, JeYong Jin, Andrea Rella
  • Patent number: 8991234
    Abstract: The present disclosure relates to a valproic acid biosensor. In some embodiments, the valproic acid biosensor may comprise a microcantilever, a self-assembly monolayer, and a valproic acid antibody layer. The self-assembly monolayer may immobilize on the microcantilever surface. The valproic acid antibody layer may immobilize on the self-assembly monolayer. The valproic acid antibody layer may be used to bind with valproic acid drug samples. The present disclosure further relates to methods for measuring the concentration of valproic acid drug samples.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: March 31, 2015
    Assignee: National Taiwan University
    Inventors: Long-Sun Huang, Kai-Fung Chang, Yu-Chen Chang
  • Publication number: 20150082865
    Abstract: An environmental measurement apparatus includes an operation unit which calculates a first change in a first oscillation frequency of a first QCM sensor and a second change in a second oscillation frequency of a second QCM sensor. The operation unit corrects the second change based on the first change in a first period and the second change in the first period.
    Type: Application
    Filed: December 2, 2014
    Publication date: March 26, 2015
    Inventor: Mitsuo OZAKI
  • Patent number: 8935960
    Abstract: A kit for detecting the presence of an explosive includes a pulsed focused energy source located at a target distance away from a substrate, the energy having a magnitude sufficient to release the internal energy of an explosive if present on the substrate and thereby generate an acoustic wave. The kit also includes a detector adapted to detect the acoustic wave at a detection distance away from the substrate.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: January 20, 2015
    Assignee: Massachusetts Institute of Technology
    Inventors: Charles M. Wynn, Robert W. Haupt, Sumanth Kaushik, Stephen T. Palmacci
  • Publication number: 20140366611
    Abstract: A sensing device is provided that has satisfactory sensing accuracy when a crystal unit where an excitation electrode is formed on both upper and lower surfaces of a piezoelectric piece is used to sense a sensing object. Adsorption regions are arranged in two places so as to intersect a direction of flow of a fluid, thus each of the adsorption regions senses the sensing object and reference regions are individually provided in these adsorption regions. A difference ?f1 between the oscillation frequencies of the regions and a difference ?f2 between the oscillation frequencies of the regions are added, and based on the result of the addition, whether the sensing object is present or not and its concentration are detected.
    Type: Application
    Filed: June 9, 2014
    Publication date: December 18, 2014
    Inventors: HIROYUKI KUKITA, SHUNICHI WAKAMATSU, WAKAKO SHINOBU
  • Patent number: 8850893
    Abstract: The invention relates to a sensor (1) and a method for measuring pressure, variation in sound pressure, a magnetic field, acceleration, vibration, or the composition of a gas. The sensor (1) comprises an ultrasound transmitter (2), and a cavity (4) arranged in connection with it. According to the invention, the sensor (1) comprises a passive sensor element (3, 3?) located at the opposite end of the cavity (4) to the ultrasound transmitter (2), the distance of which from the ultrasound transmitter (2) is selected in such a way that the resonance condition is met at the ultrasound frequency used, the ultrasound transmitter (2) comprises a light-construction diaphragm oscillator (9), which is thus well connected to the surrounding medium, and the sensor includes means for measuring the interaction between the ultrasound transmitter (2) and the cavity (4).
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: October 7, 2014
    Assignee: Valtion Teknillinen Tutkimuskeskus
    Inventors: Heikki Seppa, Teuvo Sillanpää
  • Patent number: 8820141
    Abstract: Device for detecting a gas having an excitation device for exciting the gas by an electromagnetic wave having a wavelength corresponding approximately to that of the gas; and a detection device for detecting the excitation of the gas, the detection device having a waveguide connected to the excitation device, a part of which forms a movable element designed to be in contact with the gas and capable of being set into vibration by the impact of the excited gas molecules; and a measurement sensor, for measuring the vibration of the element, the measurement sensor and the element forming the detection device.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: September 2, 2014
    Assignee: Commissariat a l'energie Atomique et aux Energies Alternatives
    Inventors: Serge Gidon, Patrick Chaton, Sergio Nicoletti
  • Patent number: 8794054
    Abstract: A sensor device for analyzing fluidic samples is provided. The sensor device includes a stacked sensing arrangement having at least three sensing layers and a multilayer structure. The multilayer structure has a hole formed therein which is adapted to let pass the fluidic sample and the stacked sensing arrangement is formed in the multilayer structure in such a way that the fluidic sample passes the stacked sensing arrangement when the fluidic sample passes the hole.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: August 5, 2014
    Assignee: NXP, B.V.
    Inventors: Evelyne Gridelet, Pablo Garcia Tello, Michiel Jos Van Duuren, Nader Akil
  • Publication number: 20140165702
    Abstract: A QCM (Quartz Crystal Microbalance) sensor includes a quartz crystal vibrator for measurement having a first electrode which contacts a measurement sample to be detected and a first quartz substrate in which is formed the first electrode, and a quartz crystal vibrator for reference having a second electrode which contacts a reference sample serving as a reference when detecting the physical quantity of the measurement sample and a second quartz substrate in which is formed the second electrode. A housing accommodates the quartz crystal vibrators and confines the reference sample in a state of contacting the second electrode. The QCM sensor is capable of detecting a physical quantity of the measurement sample accurately at the time of measuring the physical quantity of the sample in an atmosphere of the sample.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 19, 2014
    Applicant: SEIKO INSTRUMENTS INC.
    Inventors: Sachiko TANABE, Masayuki SUDA, Hiroshi MURAMATSU
  • Publication number: 20140165703
    Abstract: A circuit for detecting air, a related system, and a related method are provided. The circuit for detecting air includes a receiver connection and an air-detection circuit. The receiver connection is configured to provide a receiver signal. The air-detection circuit is in operative communication with the receiver connection to process the receiver signal to generate a processed signal corresponding to detected air. The air-detection circuit includes one or more active-rectifying elements configured to actively rectify the receiver signal to provide the processed signal.
    Type: Application
    Filed: December 10, 2013
    Publication date: June 19, 2014
    Applicant: DEKA Products Limited Partnership
    Inventors: Michael J. Wilt, Jason M. Sachs
  • Patent number: 8695403
    Abstract: A support for a thin element in an electrically conducting or semi-conducting material, one face of which is intended to be put into contact with a liquid or gas medium, the support has a first part provided with a central through-passage with a longitudinal axis, said passage including at least one first and one second portion with a different diameter connected to each other through a shoulder, said shoulder being intended for supporting said thin element; a second part penetrating into the passage with the end opposite to the one intended to be exposed to the liquid solution, capable of maintaining the thin element on the shoulder; and a seal between the thin element and the shoulder.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: April 15, 2014
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Carole Pernel, André Poinard
  • Patent number: 8695428
    Abstract: A single-input multi-output surface acoustic wave (“SAW”) device contains two or more output inter-digital transducers (“IDTs”) arranged in a longitudinal direction of a single input IDT. The detection sensitivity and reliability of the SAW device may be improved by eliminating the deviation and signal interference between multiple input IDTs.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: April 15, 2014
    Assignees: Samsung Electronics Co., Ltd., Ajou University Industry-Academic Cooperation Foundation
    Inventors: Yeol ho Lee, Soo Suk Lee, Kee Keun Lee
  • Publication number: 20140069168
    Abstract: There is disclosed a method of determining the phase compositions of a multiphase fluid flow in a fluid line, including obtaining a vibration signal from the fluid flow using a vibration sensor comprising a target disposed in the fluid flow which vibrates in response to fluid flow in the fluid line. The vibration signal is analysed to determine a first energy parameter which is related to the energy of the vibration signal within a first frequency band, and a second energy parameter which is related to the energy of the vibration signal within a second frequency band; and a phase composition parameter, such as a dryness parameter, relating to the phase compositions of the fluid flow is determined using the first and second energy parameters. There is also disclosed an apparatus for determining the phase compositions of a multiphase fluid flow in a fluid line.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 13, 2014
    Applicant: Spirax-Sarco Limited
    Inventors: Ben Frisby, Nashtara Islam, Peter Usher, Mitchell Kane
  • Publication number: 20140007653
    Abstract: An atmospheric environment measuring apparatus including a filter disposed in a casing and adsorbing a component of a gas to be detected; a first mass sensor disposed in the casing between an inlet of the casing and the filter, including a first piezoelectric vibration element and changing a resonance frequency according to a mass of a substance adhered on a surface of the first piezoelectric vibration element; a second mass sensor disposed in a stage following the filter in the casing, including a second piezoelectric vibration element and changing a resonance frequency according to a mass of a substance adhered on a surface of the second piezoelectric vibration element; and a fan disposed in a stage following the second mass sensor in the casing and fluidizing atmosphere from the inlet toward an outlet of the casing.
    Type: Application
    Filed: September 4, 2013
    Publication date: January 9, 2014
    Applicant: FUJITSU LIMITED
    Inventor: Ryozo Takasu
  • Patent number: 8609427
    Abstract: A sulfur dioxide sensor comprising a first beam having a functionalized sensing surface capable of sensing sulfur dioxide, the first beam capable of producing a first resonant frequency; and a second beam having a functionalized reference surface not capable of sensing sulfur dioxide, the second beam capable of producing a second resonant frequency, wherein differential sensing of sulfur dioxide may be performed, further wherein the first beam is functionalized with a liquid phase of a first polymeric compound and the second beam is functionalized with a liquid phase of a second polymeric compound is provided. In one embodiment, the sensor is a nano-sensor capable of low drift accurately detecting sulfur dioxide levels at the zeptograms level. Methods of making and using a sulfur dioxide sensor are also provided.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: December 17, 2013
    Assignee: Honeywell Romania s.r.l.
    Inventors: Bogdan Catalin Serban, Cornel P. Cobianu, Mihai N. Mihaila, Viorel Georgel Dumitru
  • Patent number: 8573031
    Abstract: A tunable nanoscale resonator has potential applications in precise mass, force, position, and frequency measurement. One embodiment of this device consists of a specially prepared multiwalled carbon nanotube (MWNT) suspended between a metal electrode and a mobile, piezoelectrically controlled contact. By harnessing a unique telescoping ability of MWNTs, one may controllably slide an inner nanotube core from its outer nanotube casing, effectively changing its length and thereby changing the tuning of its resonance frequency. Resonant energy transfer may be used with a nanoresonator to detect molecules at a specific target oscillation frequency, without the use of a chemical label, to provide label-free chemical species detection.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: November 5, 2013
    Assignee: The Regents of the University of California
    Inventors: Kenneth J. Jensen, Caglar O. Girit, William E. Mickelson, Alexander K. Zettl, Jeffrey C. Grossman
  • Patent number: 8567232
    Abstract: Techniques are generally described for detecting a concentration level of at least one gas. Some example devices may include a sensor including conductive plate on a surface of dielectric including a nanotube layer formed thereon. The conductive plate and the nanotube layer form a resonator that resonates at a frequency in response to an interrogation signal. The nanotube layer may be configured to associate with one or more gas molecules. The frequency at which the resonator resonates may shift according to which gas molecules are associated with the nanotube layer to identify a particular gas. An amount of resonance may be exhibited as a resonant response signal. An amplitude of the resonant response signal may be indicative of the concentration level of the detected gas.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: October 29, 2013
    Assignee: Empire Technology Development LLC
    Inventors: H. Sprague Ackley, Christopher A. Wiklof
  • Patent number: 8548755
    Abstract: Switching a transmitting and receiving direction of two transducers (2,3) in the forward and the reverse direction, a time differential memory part (17b) storing a propagation time differential every K times a unit measurement process being executed, the propagation time differential being a differential between a propagation time of the ultrasonic wave signal in a forward direction and in a reverse direction, a flow rate calculating part (15) calculating a flow rate of a passing fluid based on a lump sum of propagation times in both the forward and the reverse directions obtained at least every K times of a unit measurement process being executed, an estimating part (18) estimating a change in a momentary flow rate of the fluid based on the time differential obtained every K times of the unit measurement process being executed and storing thereof in a time differential memory part (17b), thus obtaining an accurate flow rate and detecting the change in the momentary flow rate.
    Type: Grant
    Filed: December 25, 2009
    Date of Patent: October 1, 2013
    Assignee: Panasonic Corporation
    Inventors: Koichi Takemura, Fumikazu Shiba, Daisuke Bessho
  • Patent number: 8539816
    Abstract: A system for locking a laser with a resonant optical cavity includes a laser that emits a laser beam, a resonant optical cavity having at least two cavity mirrors, one of which is a cavity coupling mirror, mode matching optics configured to couple the laser beam to the cavity via the cavity coupling mirror, means for applying a periodic dither or modulation waveform signal to the optical frequency of the incident laser beam or to the laser itself to thereby induce modulation of the intracavity optical power, and means for enabling a portion of the light emerging from the cavity coupling mirror to enter a cavity of the laser while maintaining an optical phase that results in periodic optical feedback locking whereby a mean optical frequency of the laser matches a resonance peak of the cavity.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: September 24, 2013
    Assignee: LI-COR, Inc.
    Inventors: Alexander Kachanov, Serguei Koulikov
  • Patent number: 8524501
    Abstract: The invention provides a chemical detection system for detecting at least one target chemical species, including a self-sensed cantilevered probe array having a plurality of self-sensed cantilevered probes, at least one chemical-sensitive coating material applied to at least one cantilevered probe in the cantilevered probe array, and an interface circuit that is coupled to the cantilevered probe array. At least one cantilevered probe in the cantilevered probe array exhibits a shifted cantilevered probe response when the cantilevered probe array is exposed to the target chemical species and the interface circuit actuates the cantilevered probe. A handheld chemical detection system and a method of operation are also disclosed.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: September 3, 2013
    Assignee: Board of Regents of the Nevada System of Higher Education
    Inventor: Jesse D. Adams
  • Patent number: 8516880
    Abstract: An exemplary gas sensing system includes a gas sensing unit, a detecting unit, and a processing unit. The gas sensing unit includes a quartz crystal substrate, a first electrode layer, a second electrode layer, a first activating layer, and a sensor medium layer having adsorption ability and desorption ability to chemical gas. The detecting unit is electrically connected with the first electrode and the second electrode, and is configured for detecting a frequency change of the gas sensing unit before and after adsorbing the chemical gas. The processing unit is electrically connected with the detecting unit, and is configured for obtaining a mass change of the gas sensing unit according to the frequency change.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: August 27, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Kai Pei
  • Patent number: 8511165
    Abstract: An EMAT that generates horizontally polarized shear ultrasonic waves is combined with a PZT that generates longitudinal ultrasonic waves to provide simultaneous or sequential inspection of a test component material for improved accuracy in estimating properties of the material or detecting and estimating the dimensions of defects in the material. The transducer combination is constructed so that the EMAT and PZT elements are concentric and therefore interrogate approximately the same volume of the test component material. Nonferromagnetic insulators, such as elastomers, are installed on the bottom surface of PZT component to increase the transmission and reception the ultrasonic waves into the test component. Ferromagnetic, acoustic-absorbing materials are installed on the top surface of the EMAT coil component to minimize generation of ultrasonic waves in the bias magnet.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: August 20, 2013
    Inventor: Borja Lopez Jauregui
  • Patent number: 8485025
    Abstract: The present invention provides a standing wave fiber assembly for the collection and detection of a biological target in a complex biological fluid, including: an oscillator; and an elongated fiber coupled to the oscillator, wherein the elongated fiber is selectively exposed to a fluid potentially containing the biological target, and wherein the resonated elongated fiber attracts the biological target, and wherein a change in a response of the resonated elongated fiber indicates the presence of the biological target. The assembly also includes a top cover plate including one or more electrical connections and a port through which the fluid is introduced. The assembly further includes a bottom cover plate including a well in which the fluid is contained. Optionally, the elongated fiber includes one or more probes homogenously functionalized along its length that bind targeted biological materials.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: July 16, 2013
    Assignee: InSituTec, LLC
    Inventors: Shane Woody, Jennifer Weller
  • Patent number: 8479559
    Abstract: A photoacoustic detection device includes a cylindrical acoustic resonator having an arrangement for guiding light essentially perpendicular to a cylinder axis in such a manner that a second azimuthal resonance of cylinder oscillation is excitable by absorption of the light.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: July 9, 2013
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Andras Miklos, Judit Angster
  • Patent number: 8448494
    Abstract: An electronic microbalance made in a semiconductor body accommodating an oscillating circuit adjacent to a diaphragm. A stack formed by a first electrode, a second electrode, and a piezoelectric region arranged between the first and the second electrode extends above the diaphragm. Any substance that deposits on the stack causes a change in the mass of the microbalance and thus in the resonance frequency of a resonator formed by the microbalance and by the oscillating circuit and can thus be detected electronically. A chemical sensor is obtained by forming a sensitive layer of a material suitable for binding to target chemicals on the stack. The sensitivity of the microbalance can be increased by making the first electrode of molybdenum so as to increase the piezoelectric characteristics of the piezoelectric region.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: May 28, 2013
    Assignee: STMicroelectronics S.R.L.
    Inventors: Ubaldo Mastromatteo, Flavio Francesco Villa, Gabriele Barlocchi
  • Publication number: 20130098141
    Abstract: Cantilever chemical vapor sensors that can be tailored to respond preferentially in frequency by controlling the location of deposition of an adsorbing layer. Cantilever chemical vapor sensor having a base, one or more legs and a tip are fabricated using a gold layer to promote deposition of a sorbing layer of a polymeric material in a desired location, and using a chromium layer to inhibit deposition of the sorbing layer in other locations. Sorbing layers having different glass temperatures Tg and their effects are described. The methods of making such cantilever chemical vapor sensors are described.
    Type: Application
    Filed: March 14, 2012
    Publication date: April 25, 2013
    Applicant: California Institute of Technology
    Inventors: Heather McCaig, Edward B. Myers, Michael L. Roukes, Nathan S. Lewis, Derrick Chi
  • Patent number: 8375768
    Abstract: An electrochemical piezoelectric sensor is disclosed. The sensor includes a piezoelectric substrate, three (or more) electrodes over a first surface of the substrate, and another electrode over a second (opposing) surface of the substrate. An ionic liquid in the form of a film is adhered, bound, immobilized, or otherwise positioned over the substrate and electrodes of the first surface. The ionic liquid film permits the absorption and detection of analytes from a gaseous sample, for environmental gases, example explosive vapors and/or explosive vapor species in the gaseous sample. Detection (optionally including analyte quantitation and qualitative identification) can be performed by both electrochemical and piezoelectric techniques using a single sensor. Systems incorporating and methods of using the electrochemical piezoelectric sensor also are disclosed.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: February 19, 2013
    Assignees: Oakland University, Board of Trustees of Michigan State University
    Inventors: Xiangqun Zeng, Lei Yu, Yue Huang, Andrew J. Mason
  • Patent number: 8372674
    Abstract: A method includes forming a hole in a first wafer and forming a sensor structure in or on a second wafer. The second wafer includes a piezoelectric material. The method also includes bonding the first wafer and the second wafer, where the sensor structure is located between the wafers. The method further includes forming a sensing layer by depositing material between the wafers through the hole in the first wafer. The sensing layer could be formed by depositing a sensing layer material on the second wafer using direct printing. Also, the hole through the first wafer could be formed using ultrasonic milling, micro-drilling, laser drilling, wet etching, and/or plasma etching. A spacer material could be used to bond the wafers together, such as frit glass paste or an organic adhesive. Trenches could be formed in the first wafer to facilitate easier separation of multiple sensors.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: February 12, 2013
    Assignee: Honeywell International Inc.
    Inventors: Cornel Cobianu, Bogdan-Catalin Serban
  • Patent number: 8365576
    Abstract: Disclosed is a method for detecting a low concentration gas. In the method, a measurand gas containing the target gas in a concentration of 50 ppm or less is supplied to an oscillation element which contains a quartz crystal resonator and a zeolite including a metal complex (such as a zeolite including a cobalt phthalocyanine complex) present on or above the quartz crystal resonator. The target gas is then detected through a change in resonance frequency of the quartz crystal resonator, the change being caused by the adsorption of the target gas by the metal-complex-including zeolite.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: February 5, 2013
    Assignee: National University Corporation Nagoya Institute of Technology
    Inventors: Hideki Masuda, Tomohiko Inomata, Taku Sawaki
  • Patent number: 8359903
    Abstract: A photoacoustic detector for providing a measurement, includes a first light source and a second light source each configured to provide light of a same intensity while retaining a same spectral distribution. Additionally, the photoacoustic detector includes a first beam path allocated to the first light source and at least one second beam path allocated to the second light source, wherein a different absorption of light occurs in the first path and the second beam path in at least one selected wavelength range. Further, the photoacoustic detector includes a photoacoustic measuring cell; and a mechanism for alternately guiding light from the first beam path and from the second beam path into the photoacoustic measuring cell.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: January 29, 2013
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Andras Miklos, Judit Angster
  • Patent number: 8349611
    Abstract: Resonant sensors, preferably having floating bilayer symmetry, and their methods of use is determining the presence, amount or binding kinetics of an analyte of interest in a test sample are disclosed. The test sample may be a liquid or gas.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: January 8, 2013
    Assignee: Leversense LLC
    Inventors: Jacob J. Loverich, Jeremy E. Frank, Peter A. Nagy
  • Patent number: 8342019
    Abstract: A probe unit includes a gas sensor having multiple gas introduction bores for introducing a gas into an inside of the gas sensor, and a sensor holder inside of which the gas sensor is held and that is arranged inside of a duct so as to introduce an exhaust gas flowing in the duct into the gas sensor. A calibration gas flow channel is arranged in the sensor holder and has an opening at an inner surface of a side wall, surrounding the gas introduction bores of the gas sensor, of the sensor holder so as to supply a calibration gas to the gas sensor. A guide groove is arranged continuous to the opening of the calibration gas flow channel and arranged on the inner surface of the side wall along an arranging direction of the multiple gas introduction bores to face the multiple gas introduction bores.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: January 1, 2013
    Assignee: Horiba, Ltd.
    Inventor: Shigeyuki Hokamura
  • Patent number: 8336367
    Abstract: An object of the present invention is to provide a detection sensor and a vibrator which can offer improved sensitivity. The present invention uses a scheme in which no piezoelectric layer, drive electrode, or the like is provided on the surface of a vibrator 30 and in which the vibrator 30 is driven by an actuator 40 provided separately from the vibrator 30. The actuator 40 is of a cantilever type and is provided near a fixed end 30a of the vibrator 30. Vibration of the actuator 40 is transmitted to the vibrator 30 via a coupling beam 70. Thus, vibration of the vibrator 30 is prevented from being inhibited by a piezoelectric layer, a drive electrode, or the like. This improves the Q value of the vibrator 30 and thus the sensitivity of the detection sensor 10. Furthermore, if the detection sensor 10 is configured to offer a sensitivity equivalent to that of a conventional one, the size of the detection sensor 10 can be sharply reduced compared to that of the conventional one.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: December 25, 2012
    Assignees: National Institute of Advanced Industrial Science and Technology, Olympus Corporation
    Inventors: Jian Lu, Tsuyoshi Ikehara, Takashi Mihara
  • Patent number: 8327686
    Abstract: A method and apparatus for the photo-acoustic identification and quantification of one or more analyte species present in a gaseous or liquid medium in low concentration utilizing a laser and a resonant optical cavity containing the medium and having within the cavity at least two partially transparent mirrors, one of which is a cavity coupling mirror and one of which is moveably mounted on an assembly responsive to an input signal.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: December 11, 2012
    Assignee: LI-COR, Inc.
    Inventors: Alexander Kachanov, Serguei Koulikov
  • Patent number: 8322190
    Abstract: A photo acoustic trace gas detector for detecting a concentration of a trace gas in a gas mixture. The detector includes a light source for producing a light beam and a light modulator for modulating the light beam into a series of light pulses for generating sound waves in the gas mixture. The light modulator is arranged for modulating the light beam between a non-zero lower intensity level and a higher intensity level. An amplitude of the sound waves being a measure of the concentration. An optical cavity contains the gas mixture and amplifies a light intensity of the light pulses. A transducer converts the sound waves into electrical signals. A feedback loop with a photo detector for measuring the light intensity of the light pulses regulates the amplification of the light intensity in the optical cavity.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: December 4, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Jeroen Kalkman, Maarten Marinus Johannes Wilhelm Van Herpen
  • Patent number: 8302458
    Abstract: A portable analytical system for detecting organic chemicals in water comprising a miniature preconcentrator and a SAW detector, the latter being characterized by a nanoporous carbon coating that provides improved response compared to prior art polymer coatings, particularly when detecting low concentrations of trihalomethane chemicals, such as chloroform and bromoform.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: November 6, 2012
    Assignee: Parker-Hannifin Corporation
    Inventors: Kazi Zulfiqur Ali Hassan, William M. Cost, Curtis D. Mowry, Michael P. Siegal, Alex Robinson, Joshua J. Whiting, Stephen W. Howell
  • Patent number: 8302475
    Abstract: A probe unit includes a gas sensor having multiple gas introduction bores for introducing a gas into an inside of the gas sensor, and a sensor holder inside of which the gas sensor is held and that is arranged inside of a duct so as to introduce an exhaust gas flowing in the duct into the gas sensor. A calibration gas flow channel is arranged in the sensor holder and has an opening at an inner surface of a side wall, surrounding the gas introduction bores of the gas sensor, of the sensor holder so as to supply a calibration gas to the gas sensor. A guide groove is arranged continuous to the opening of the calibration gas flow channel and arranged on the inner surface of the side wall along an arranging direction of the multiple gas introduction bores to face the multiple gas introduction bores.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: November 6, 2012
    Assignee: Horiba, Ltd.
    Inventor: Shigeyuki Hokamura
  • Patent number: 8291745
    Abstract: A sensing device for detecting an analyte is disclosed. In one aspect, the device includes at least one geometrical structure and at least two clamps provided for clamping the at least one geometrical structure on at least two ends of the geometrical structure. The at least one geometrical structure has at least one chemical responsive layer being absorbent or adsorbent for the analyte, and a support structure provided for at least partly supporting the at least one chemical responsive layer. The at least one chemical responsive layer has a varying effective spring constant which changes upon absorption or adsorption of the analyte.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: October 23, 2012
    Assignee: Stichting IMEC Nederland
    Inventors: Devrez Mehmet Karabacak, Koray Karakaya
  • Patent number: 8288163
    Abstract: The present invention relates to a device and process for the quick and reliable online detection of triacetone triperoxide (TATP).
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: October 16, 2012
    Assignees: Rheinische Friedrich-Wilhelms-Universitaet Bonn, Max-Planck-Gesellschaft zur Foerderung der Wissenschaften E.V.
    Inventors: Siegfried R. Waldvogel, Jürgen Lörgen, Daniel Lubczyk, Klaus Müllen, Roland Bauer