公开(公告)号：US20190250184A1

公开(公告)日：2019-08-15

申请号：US16276398

申请日：2019-02-14

申请人： GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVY

发明人： Greg Collins ,  Susan Rose-Pehrsson

IPC分类号： G01N35/10 ,  G01N33/00

CPC分类号： G01N35/1097 ,  G01N33/0057 ,  G01N35/1004 ,  G01N2001/002 ,  G01N2035/00277 ,  G01N2035/00455

摘要： Apparatuses and methods for generating trace vapors are provided. The apparatus includes a controller and an oven. The controller includes: a processor, a memory storing at least one control program, a clean solution supply port constructed to output a clean solution, an analyte solution supply port constructed to output an analyte solution, a carrier gas inlet port constructed to receive a carrier gas, and a plurality of carrier gas supply controllers constructed to output the carrier gas. The oven includes a clean manifold, an analyte manifold, a clean solution nebulizer constructed to: receive the clean solution from the clean solution supply port, and the carrier gas from one of the plurality of carrier gas supply controllers, and output a clean solution vapor stream comprising the clean solution and the carrier gas to the clean manifold, an analyte solution nebulizer constructed to: receive the analyte solution from the analyte solution supply port and the carrier gas from another one of the plurality of carrier gas supply controllers, and output an analyte solution vapor stream comprising the analyte solution and the carrier gas to the analyte manifold, a pneumatic valve controllably connected to the processor and communicatively connected to the clean manifold and the analyte manifold, and an output supply port communicatively connected to the pneumatic valve. The controller is configured to operate the pneumatic valve to allow the clean vapor solution or the analyte vapor solution to enter the chamber and be provided to the output supply port.

公开(公告)号：US10078054B2

公开(公告)日：2018-09-18

申请号：US15309563

申请日：2015-05-07

申请人： AOBIOME LLC

发明人： James Heywood ,  David R. Whitlock

IPC分类号： G01N21/78 ,  G01N31/22 ,  G01N21/84 ,  G01N21/29 ,  G01N33/22 ,  G01N25/00 ,  G01N1/02 ,  G01N21/77 ,  G01N33/00

CPC分类号： G01N21/78 ,  G01N21/293 ,  G01N21/783 ,  G01N21/84 ,  G01N25/00 ,  G01N31/22 ,  G01N31/227 ,  G01N33/0057 ,  G01N33/22 ,  G01N33/227 ,  G01N2001/022 ,  G01N2001/028 ,  G01N2021/7759 ,  H05K999/99

摘要： A system and method is provided for detection at least one of nitrite (NO2), nitric oxide (NO), nitrogen dioxide (NO2), and other nitrogen oxides (NOx) on a substrate, such as skin. According to one aspect, a diagnostic device for measuring a concentration of at least one of nitrite (NO2), nitrogen dioxide (NO2), nitric oxide (NO), and other nitrogen oxides (NOx) on a substrate comprises a patch comprising at least one chemical compound capable of reacting with the at least one of nitrite, nitrogen dioxide, nitric oxide, and other nitrogen oxides to provide an indicator.

公开(公告)号：US10054543B2

公开(公告)日：2018-08-21

申请号：US15050491

申请日：2016-02-23

申请人： The United States of America, as represented by the Secretary of the Army

发明人： Vincent P. Schnee

IPC分类号： G01L21/00 ,  G01N21/64 ,  B82Y15/00

CPC分类号： G01N21/643 ,  B82Y15/00 ,  G01N21/77 ,  G01N33/0031 ,  G01N33/0057 ,  G01N2021/752 ,  G01N2021/7763 ,  G01N2021/7786 ,  G01N2021/7793 ,  G01N2201/062 ,  G01N2201/12 ,  Y10S977/954

摘要： The discrimination ability of a chemical sensing cross-reactive arrays is enhanced by constructing sensing elements in two dimensions, first in the x-y plane of the substrate, second in the z dimension so that the sensors are vertically stacked on top of one another. Stacking sensing elements on top of one another adds to the discrimination ability by enabling the characteristic measurement of how fast target chemicals are passing through the stack of sensors. The new invention also allows the ability to discriminate components in a sample mixture by separating them using their innate difference in diffusional rates. Multi-sensor response patterns at each z level of sensors and time delay information from the sample passing from one level to the next are used to generate the response vector. The response vector is used to identify individual component samples and components in a mixture sample.

公开(公告)号：US20180231514A1

公开(公告)日：2018-08-16

申请号：US15376562

申请日：2016-12-12

申请人： University of Utah Research Foundation

发明人： Hanseup Kim ,  Carlos Mastrangelo

IPC分类号： G01N33/00 ,  G01N27/02 ,  B01D46/00 ,  A62D3/11

CPC分类号： G01N33/0057 ,  A62D3/11 ,  B01D46/0032 ,  B01L2300/0645 ,  B82Y15/00 ,  B82Y40/00 ,  G01N27/021 ,  G01N33/0063

摘要： A zero-power digital chemical analyzer can include a chemically-selective percolation switch. The chemically selected percolation switch can include a positive electrode and a negative electrode separated from the positive electrode by a gap. A binding agent can be located at binding sites in the gap. The binding agent can be selective for binding to a target chemical compound. The binding sites can be distributed in the gap so that target chemical molecules binding to the binding sites can form an electrically conductive pathway via a natural percolation phenomenon between the electrodes when the ambient concentration of the target chemical compound reaches a threshold concentration.

公开(公告)号：US20180196101A1

公开(公告)日：2018-07-12

申请号：US15433862

申请日：2017-02-15

申请人： Analog Devices Global

发明人： Guangyang Qu ,  Yincai Tony Liu ,  Baotian Hao ,  Hanqing Wang ,  Hengfang Mei ,  Rengui Luo ,  Yimiao Zhao ,  Junbiao Ding

IPC分类号： G01R31/28 ,  G01N27/416 ,  G01N27/12 ,  G01N33/00

CPC分类号： G01R31/2829 ,  G01N27/122 ,  G01N27/4163 ,  G01N33/0057 ,  G01R27/02 ,  G01R27/16 ,  G01R35/005

摘要： An apparatus comprises a load resistance connectable in series with the electronic sensor to form a series resistance of the load resistance and the internal impedance of the electronic sensor; an excitation circuit configured to apply a predetermined voltage to a circuit element; and a measurement circuit configured to: initiate applying the predetermined voltage to the series resistance and determining the series resistance; initiate applying the predetermined voltage to the load resistance and determining the load resistance; and calculate the internal impedance of the sensor using the determined series resistance and the load resistance, and provide the calculated internal impedance to a user or process.

公开(公告)号：US20180172655A1

公开(公告)日：2018-06-21

申请号：US15891699

申请日：2018-02-08

申请人： UNIVERSITY OF MARYLAND, COLLEGE PARK ,  UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE ,  GEORGE MASON UNIVERSITY ,  THE GEORGE WASHINGTON UNIVERSITY

发明人： Abhishek MOTAYED ,  Geetha ALURI ,  Albert V. DAVYDOV ,  Mulpuri V. RAO ,  Vladimir P. OLESHKO ,  Ritu BAJPAI ,  Mona E. ZAGHLOUL

IPC分类号： G01N33/00 ,  G01N27/12

CPC分类号： G01N33/0057 ,  G01N27/127 ,  G01N33/0031 ,  G01N33/0037 ,  G01N33/004 ,  G01N33/0042 ,  G01N33/0044 ,  G01N33/0047 ,  G01N33/0049 ,  G01N33/005 ,  G01N33/0054 ,  Y02A50/245 ,  Y02A50/246

摘要： A nanostructure sensing device comprises a semiconductor nanostructure having an outer surface, and at least one of metal or metal-oxide nanoparticle clusters functionalizing the outer surface of the nanostructure and forming a photoconductive nanostructure/nanocluster hybrid sensor enabling light-assisted sensing of a target analyte.

公开(公告)号：US09972482B2

公开(公告)日：2018-05-15

申请号：US15634151

申请日：2017-06-27

申请人： Smiths Detection Montreal Inc.

发明人： Jan Hendrikse ,  Vladimir Romanov

IPC分类号： H01J49/16 ,  H01J49/14 ,  H01J49/00 ,  H01J49/24 ,  H01J49/04

CPC分类号： H01J49/168 ,  G01N33/0057 ,  H01J49/0004 ,  H01J49/0022 ,  H01J49/0036 ,  H01J49/0404 ,  H01J49/145 ,  H01J49/24

摘要： A concentric APCI surface ionization probe, supersonic sampling tube, and method for use of the concentric APCI surface ionization probe and supersonic sampling tube are described. In an embodiment, the concentric APCI surface ionization probe includes an outer tube, an inner capillary, and a voltage source coupled to the outer tube and the inner capillary. The inner capillary is housed within and concentric with the outer tube such that ionized gas (e.g., air) travels out of the outer tube, reacts with a sample, and the resulting analyte ions are sucked into the inner capillary. A supersonic sampling tube can include a tube coupled to a mass spectrometer and/or concentric APCI surface ionization probe, where the tube includes at least one de Laval nozzle.

公开(公告)号：US09958397B1

公开(公告)日：2018-05-01

申请号：US14743425

申请日：2015-06-18

申请人： U.S. Army Edgewood Chemical and Biological Command

发明人： Gregory W. Peterson ,  Joseph A. Rossin ,  Jennifer R. Soliz ,  Kathryn L Killops

IPC分类号： G01N21/78 ,  G01N21/29 ,  G01N33/20 ,  G01N33/00

CPC分类号： G01N31/22 ,  G01N21/78 ,  G01N33/0036 ,  G01N33/0037 ,  G01N33/0042 ,  G01N33/0044 ,  G01N33/0049 ,  G01N33/0052 ,  G01N33/0054 ,  G01N33/0057 ,  G01N33/203 ,  Y10T436/175383 ,  Y10T436/178459 ,  Y10T436/184 ,  Y10T436/186 ,  Y10T436/255

摘要： Processes for sensing a variety of toxic chemicals and/or processes for determining the residual life of a filter or filtration system are provided. Exemplary process for sensing a toxic chemical include contacting a toxic chemical, or byproduct thereof, with a sorbent that includes a porous metal hydroxide and a transition metal reactant suitable to react with a toxic chemical or byproduct thereof. The sorbent is contacted with the toxic chemical or byproduct thereof for a sampling time. A difference between a post-exposure colorimetric state of the sorbent and a pre-exposure colorimetric state of the sorbent or control is determined to thereby sense exposure to, or the presence of, the toxic chemical or byproduct thereof.

公开(公告)号：US20180113106A1

公开(公告)日：2018-04-26

申请号：US15331340

申请日：2016-10-21

申请人： Bernard Gorski

发明人： Bernard Gorski

IPC分类号： G01N33/22 ,  G01N21/78

CPC分类号： G01N33/227 ,  G01N21/293 ,  G01N21/78 ,  G01N21/783 ,  G01N21/84 ,  G01N25/00 ,  G01N31/22 ,  G01N33/0057 ,  G01N33/22 ,  G01N2001/022 ,  G01N2001/028 ,  G01N2021/7759 ,  G01N2021/7796

摘要： A wipe for detecting the presence of an explosive substance is composed of an absorbent or adsorbent substrate and a chemical detection solution impregnated within the substrate. The chemical detection solution includes a redox color indicating agent that is operable to exhibit a color change upon reacting with the explosive substance.

公开(公告)号：US20170364785A1

公开(公告)日：2017-12-21

申请号：US15626041

申请日：2017-06-16

申请人： Massachusetts Institute of Technology

发明人： Timothy Manning Swager ,  Joseph Michael Azzarelli ,  Rong Zhu

IPC分类号： G06K19/07 ,  G06Q50/26 ,  A61B5/08 ,  A61B5/00 ,  G01N27/414

CPC分类号： G06K19/0717 ,  A61B5/082 ,  A61B5/4845 ,  A61B2562/0285 ,  A61B2562/029 ,  G01N27/122 ,  G01N27/127 ,  G01N27/4146 ,  G01N33/0057 ,  G01N33/0075 ,  G06Q50/265

摘要： A wireless sensor platform design and a single walled carbon nanotube/ionic liquid-based chemidosimeter system can incorporated into a highly sensitive and selective chemical hazard badge that can dosimetrically detect an analyte down to a sub parts-per-million concentration.