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Emerald Group Publishing Limited
Copyright © 2010, Emerald Group Publishing Limited
Article Type: Patent abstracts From: Sensor Review, Volume 30, Issue 4
Title: Spectrally sensing chemical and biological substances
Inventor: Wang Hong (USA); Guo Xun (USA); Liu Chunwei (CN)
Patent number: US2010070197 (A1)
Publication date: March 18, 2010
A sensor-network system for spectrally sensing a chemical or biological substance includes a plurality of probe assemblies that each includes a sensor comprising a nano-structured surface, wherein the nano-structured surface can adsorb molecules of a sample material captured adjacent to the sensor; a laser configured to emit a laser beam to illuminate the molecules adsorbed to the nano-structured surface, and a spectrometer that can obtain spectral data from light scattered by the molecules adsorbed to the nano-structured surface. A control center includes a computer storage configured to store spectral signatures each associated with a chemical or biological substance and a spectral analyzer that can determine a spectral signature matching at least one of the spectral signatures stored in the computer storage thereby to identify, in the sample material, the chemical or biological substance associated with the one of the spectral signatures.
Title: Quasi-one-dimensional metal oxide nano-material biosensor and method for manufacturing same
Applicant: Suzhou Institute of Nano Tech and N (CN)
Patent number: CN101592626 (A)
Publication date: December 2, 2009
The invention relates to a quasi-one-dimensional metal oxide nano-material biosensor and a method for manufacturing the same. The sensor comprises a silicon chip, a silicon dioxide oxidation layer grown on the silicon chip, a grid electrode, a source electrode, a drain electrode and a microfluid channel; and a quasi-one-dimensional metal oxide semiconductor nano-material is connected with the source and the drain electrodes to form a conduction channel. A process for the quasi-one-dimensional metal oxide nano-material biosensor comprises the following steps: first, synthesizing the quasi-one-dimensional metal oxide semiconductor nano-material; second, adopting a micro-nanometer photolithography standard process and a top-down method to manufacture the quasi-one-dimensional metal oxide semiconductor nano-material and a field effect transistor in array; third, using polydimethylsiloxane to manufacture the microfluid channel; finally, performing surface modification on the quasi-one-dimensional metal oxide semiconductor nano-material, modifying a joining unilayer combined with a target molecule through a self-assembling method, and connecting biological molecules on the surface of the nano-material through joining molecules so as to detect a symbolic molecule of a disease. The quasi-one-dimensional metal oxide nano-material biosensor has the characteristics of rapid response, high sensitivity, strong selectivity, no labeled molecule and the like.
Title: Nano-silicon air-sensitive material and gas sensor
Applicant: University of Beijing Normal (CN)
Patent number: CN101419179 (A)
Publication date: April 29, 2009
The invention discloses a nano-silicon gas sensitive material and a gas sensitive element belonging to the filed of new material technology and nano materials, and is characterized in that the gas sensitive material based on nano-silicon and the gas sensitive element sensitive to nitrogen-oxygen compound gases such as nitric oxide, nitrogen dioxide and the like and gases such as ammonia gas and the like can be prepared through preparing the nano-silicon by erosion of metallic catalyst silicon and adding proper catalyst such as platinum (or gold) and the like. The gas sensitive element has the advantages of good selectivity, good temperature resistance and moisture resistance, good stability, long service life, no environment pollution, stable process, good repeatability and convenient batch production.
Title: Encapsulation structure of micro-nano bionic vector water sound sensor
Applicant: University of North China (CN)
Patent number: CN101354283 (A)
Publication date: January 28, 2009
The invention relates to a micro-nano biomimetic vector acoustic sensor based on a micro-nano MEMS/NEMS processing technology and the bionics principle, in particular to an encapsulation structure of the micro-nano biomimetic vector acoustic sensor. By the encapsulation structure, the performance indexes of the vector acoustic sensor are further improved and perfected. The encapsulation structure comprises a supporting body used for fixing the micro-nano biomimetic vector acoustic sensor, an encapsulation shell which is sheathed the micro-nano biomimetric vector acoustic sensor and is fixed with the supporting body by sealing; the encapsulation shell is filled full of insulation liquid with the same or similar density as the water and is a transaudient rubber cap manufactured by a high-frequency, low-attenuation and low-seepage polyurethane potting material by an acoustic potting technique. Designed according to the bionics principle and with reasonable structure, while protecting the micro-structure of the acoustic sensor, the encapsulation structure does not affect or hinder the detection to sound signals by the micro-structure of the acoustic sensor, thus realizing the purpose of further improving and perfecting the performance indexes of the vector acoustic sensor.
Title: Composite catalyst and method for manufacturing carbon nano-structured materials
Applicant: University of Cincinnati (USA); Shanov Vesselin N. (USA); Gorton Andrew (USA); Yun Yeo-Heung (USA); Schultz Mark J. (USA)
Patent number: WO2008105936 (A2)
Publication date: September 4, 2008
A method of forming a carbon nanotube array on a substrate is disclosed. One embodiment of the method comprises depositing a composite catalyst layer on the substrate, oxidizing the composite catalyst layer, reducing the oxidized composite catalyst layer, and growing the array on the composite catalyst layer. The composite catalyst layer may comprise a group VIII element and a non-catalytic element deposited onto the substrate from an alloy. In another embodiment, the composite catalyst layer comprises alternating layers of iron and a lanthanide, preferably gadolinium or lanthanum. The composite catalyst layer may be reused to grow multiple carbon nanotube arrays without additional processing of the substrate. The method may comprise bulk synthesis by forming carbon nanotubes on a plurality of particulate substrates having a composite catalyst layer comprising the group VIII element and the non-catalytic element, in another embodiment, the composite catalyst layer is deposited on both sides of the substrate.
Title: Two-dimensional position-sensitive radiation sensor for detection of position and radiant power, has nano-scaled tunable electronic material with pores on silicon-radiation sensor material
Applicant: Fahrner Wolfgang R. (DE); Fink Dietmar (DE); Hoppe Kurt (DE)
Patent number: DE102007052565 (A1)
Publication date: March 20, 2009
The two-dimensional position-sensitive radiation sensor has nano-scaled tunable electronic material with pores on silicon (TEMPOS)-radiation sensor material which interconnects both position-dependent measuring voltages by position-true nanotubes pressure contacting at semiconducting lower side on generation of mass reference in focused, movable radiant flux. The sensor operated, focused radiant power is converted to decoupled signal measuring voltage in constant power operation.
Title: Carbon monoxide sensor and analyser
Applicant: Zakrytoe Aktsyonernoe Obshhest (RU); Aleinikov Nikolay Nikolaevich (RU); Vershinin Nikolay Nikolaevich (RU); Efimov Oleg Nikolaevich (RU)
Patent number: WO2009031925 (A1)
Publication date: March 12, 2009
The inventive carbon monoxide sensor comprises a test electrode, a solid electrolyte and a reference electrode, wherein the test electrode is made of a solid electrolyte, a catalytically active material, in the form of a carbon nanoparticles-containing nanomaterial, which are coated with a platinum group metal or alloy, and of a glass carbon powder at the following mass ratio: 50-70 mass percent solid electrolyte and 10-28 mass percent catalytically active material, the rest being the glass carbon powder. The inventive carbon monoxide analyser comprises an electrochemical gas sensor, a microcontroller, a conversion unit and a generator of alternating current which is supplied to the electrodes of the electrochemical gas sensor for conductivity measurement.
Title: Nanofibers and methods of making same and using same in humidity sensors
Inventor: Wang C.E. (CN); Zhang Hongnan (CN); Li Zhenyu (CN); Zheng Wei (CN); Wang Wei (CN); Liu Changkun (USA); Zhou Bing (USA)
Patent number: US2010043529 (A1)
Publication date: February 25, 2010
√A new type of highly efficient and self-cleaning humidity sensor based on Mg2+/Na+-doped TiO2 nanofiber mats is provided. Examples show the response and recovery characteristic curves for ten circles with the RH changing from 11 to 95 percent. The nanofibers are manufactured by mixing together a metal salt comprising titanium, a magnesium compound, a sodium compound, and a high-molecular weight material to form a mixture, electrospinning the mixture to form composite nanofibers, and calcining the composite nanofibers to yield a TiO2 nanofiber material doped with magnesium and sodium.