370 results about "Nanosensor" patented technology

Embodiments of nanoelectronic sensors are described, including sensors for detecting analytes such ammonia. An environmental control system employing nanoelectronic sensors is described. A personnel safety system configured as a disposable badge employing nanoelectronic sensors is described. A method of dynamic sampling and exposure of a sensor providing a number of operational advantages is described.

An electronic system and method for detecting analytes, such as carbon dioxide, is provided, using an improved nanostructure sensor (CO2 sensor). The CO2 sensor may comprise a substrate and a nanostructure, such as a one or more carbon nanotubes disposed over the substrate (e.g., as a network). One or more conductive elements may electrically communicate with the nanostructure. A counter or gate electrode may be positioned adjacent the nanostructure. A functionalization material reactive with carbon dioxide may be included, either disposed in contact with the nanostructure or isolated by a dielectric. The sensor may be connected to a circuit responsive to changes in CO2 concentration in the environment. Embodiments are described of medical sensing systems including one or more CO2 sensors. One embodiment comprises a breath sampling cannula which is connected to a sensor unit. In an alternative, the cannula permits supplemental oxygen to be administered, while recovering and measuring analytes in breath samples. The cannula may connect to a portable processor-display unit for monitoring one or more analytes, such as CO2. Another embodiment includes a cannula configured for the monitoring of sleep disorders, such as apnea, comprising one or more sensors disposed adjacent a breath sampling channel, optionally including flow rate or other sensors. The sensors may be connected by wired or wireless links for to a processor/input/display unit. Any of the embodiments may include filters, selectively permeable membranes, absorbents, and the like to precondition the breath sample, may be configured to include complementary chemistry measurements.

Apparatus, oilfield assemblies, and methods of use are described. The apparatus comprises, in one embodiment, a swellable elastomeric composition comprising a swellable elastomer and one or more nanosensors dispersed therein and shaped into an oilfield element. Methods of the invention comprise using an apparatus of the invention in an oilfield operation, thus exposing the oilfield element to an oilfield environment, and sensing one or more reservoir parameters. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

A new sensing technology for chemical/biomolecular sensors is provided. One such sensor detects molecular hydrogen (H₂) using nanoelectronic components. A tiny, low-cost nanosensor chip can offer: (i) performance that matches or exceeds that of existing technology, (ii) plug-and-play simplicity with both digital and analog control systems, and (ii) the small size and low power consumption needed for wireless integration.

Homeland Intelligence Systems Technology “H-LIST” and battlefield apparatus comprises nano-sensors embedded in a silicon substrate and etched/fused in a micro-fibered material. The silicon substrate is alloyed with miniaturized steel responsive to weapons, preventing bullet penetration and providing effective detection platform on an outfit. The outfit is operable for monitoring suspicious terrorist activities and for tracking biological and chemical gases, and explosives, including weapons of mass destruction and physiological conditions of personnel. Disclosed embodiments provide wearable detection apparatus comprising plurality sensors on an outfit configured to be worn by military personnel, an officer, a security officer, a bus driver, hostesses, Doctors, civil establishment hospital patients and the like, for protection and for sensing deadly gases, explosives, and physiological conditions in a defined area. A receptor is operatively configured and worn proximate to the outfit responsive to detection signals. The receptor is communicatively connected to the sensors and operable for receiving/analyzing detection signal communications wirelessly indicative of the presence of a sensed agent, whereby detected signals are transported wirelessly to a central security monitoring station, providing communications to first responders. The communications could be reachable to backup security personnel or agents, prompting them to respond to the vicinity of the detection. The sensors are multifunctional and coded to recognize wavelike pattern of gases and explosives traveling through the wave. Embodiments provide the outfit and the receptor being operable to process the portion of the detection signal to determine the detection type and/or whether there is a concealed object by conducting a test in which a first characteristic of a first dielectric constant associated with a person is determined, and a second characteristic of a second dielectric constant associated with the concealed object and or weapons of mass destruction is determined to expedite data transmission and communication to first responders.

The invention provides nanosensors and nanosensor components for the detection of ion channel activity, receptor activity, or protein protein interactions. Certain of the nanosensor components comprise a nanoparticle and recognition domain. Following contact with cells and, optionally, internalization of the nanosensor component by a cell, the recognition domain binds to a target domain, e.g., a heterologous target domain, of a polypeptide of interest such as an ion channel subunit, G protein coupled receptor (GPCR), or G protein subunit. Ion channel activity, GPCR activity, or altered protein interaction results in a detectable signal. The nanoparticles may be functionalized so that they respond to the presence of an ion by altering their proximity. Certain of the nanosensors utilize the phenomenon of plasmon resonance to produce a signal while others utilize magnetic properties, RET, and/or ion-sensitive moieties. Also provided are polypeptides, e.g., ion channel subunits, comprising a heterologous target domain, and cell lines that express the polypeptides. Further provided are a variety of methods for detecting ion channel activity, receptor activity, or protein interaction and for identifying compounds that modulate one or more of these. In certain embodiments the invention allows the user to detect the activity of specific ion channels even in the presence of other channels that permit passage of the same ion(s) or result in activation of the same downstream targets, thereby achieving improved specificity in high throughput screens while at the same time providing a high signal to noise ratio.

A gas sensing device (nanosensor) includes a substrate with at least a pair of conductive electrodes spaced apart by a gap, and an electrochemically functionalized semiconductive nanomaterial bridging the gap between the electrodes to form a nanostructure network. The nanomaterial may be single-walled carbon nanotubes (SWNTs) functionalized by the deposition of nanoparticles selected from the group consisting of an elemental metal (e.g., gold or palladium), a doped polymer (e.g., camphor-sulfonic acid doped polyaniline), and a metal oxide (e.g. tin oxide). Depending on the nanoparticles employed in the functionalization, the nanosensor may be used to detect a selected gas, such as hydrogen, mercury vapor, hydrogen sulfide, nitrogen dioxide, methane, water vapor, and/or ammonia, in a gaseous environment.

A method of producing polymer/nanotube composites where the density and position of the nanotubes (11) within the composite ca be controlled. Carbon nanotubes (11) are grown from organometallic micropatterns. These periodic nanotube arrays are then incorporated into a polymer matrix (7) by deposing a curable polymer film on the as-grown tubes. This controlled method of producing free-standing nanotube/polymer composite films may be used to form nanosensor (3) which provide information regarding a physical condition of a material (20), such as an airplane chassis or wing, in contact with the nanosensor (3).

Homeland Intelligence Systems Technology “H-LIST” comprises nano-sensors embedded in a silicon substrate and etched/fused in a micro-fibered material to enable an outfit for monitoring suspicious terrorist activities and for track biological and chemical gases, and explosives, including stationary and portable weapons of mass destruction such as those that are likely carried on the body of a terrorist or suicide bomber, or that are likely planted in a parked vehicle or carried inside a moving vehicle. H-LIST includes a wired outfit comprising at least a jacket that is worn by an officer, a security officer, a bus driver, hostesses, Doctors and the like, for sensing deadly gases and explosives in a defined area. A receptor is operatively configured with the outfit and attached on a waist belt, and communicatively connected to the outfit input/output connector through at least wired or wirelessly means for empowering the sensors and for receiving signal communication wirelessly; indicating the presence of a sensed agent. Detected signals are transported wirelessly through radio frequency signals to a central security monitoring station, enabling communication with first responders and backup security personnel or agents to the vicinity of the detection. The sensors are multifunctional and coded to recognize wavelike pattern of gases and explosives traveling through wave. The wired outfit and the receptor are operable to process the portion of the detection signal to determine whether there is a concealed object by conducting a test in which a first characteristic of a first dielectric constant associated with a person is determined, and a second characteristic of a second dielectric constant associated with the concealed object and or weapons of mass destruction is determined to expedite data transmission and communication to first responders.

The present invention relates, e.g., to a method for detecting a nucleic acid molecule of interest in a sample comprising cell-free nucleic acids, comprising fluorescently labeling the nucleic acid molecule of interest, by specifically binding a fluorescently labeled nanosensor or probe to the nucleic acid of interest, or by enzymatically incorporating a fluorescent probe or dye into the nucleic acid of interest, illuminating the fluorescently labeled nucleic acid molecule, causing it to emit fluorescent light, and measuring the level of fluorescence by single molecule spectroscopy, wherein the detection of a fluorescent signal is indicative of the presence of the nucleic acid of interest in the sample.

Homeland Intelligence Systems Technology “H-LIST” comprises nano-sensors embedded in a silicon substrate and etched/fused in a micro-fibered material alloyed with miniaturized steel responsive to preventing bullet penetration and to enable effective detection platform on an outfit for monitoring suspicious terrorist activities and for tracking biological and chemical gases, and explosives, including weapons of mass destruction and physiological conditions of personnel. H-LIST comprises plurality sensors on an outfit worn by an officer, a security officer, a bus driver, hostesses, Doctors, civil establishment hospital patients and the like, for sensing deadly gases, explosives, and physiological conditions in a defined area A receptor is operatively configured and worn proximate to the outfit responsive for empowering the sensors and for receiving/analyzing detection signal communications wirelessly indicative of the presence of a sensed agent, whereby detected signals are transported wirelessly to a central security monitoring station, enabling communication with first responders and backup security personnel or agents to the vicinity of the detection. The sensors are multifunctional and coded to recognize wavelike pattern of gases and explosives traveling through the wave, enabling the outfit and the receptor to be operable and process the portion of the detection signal to determine the detection type and/or whether there is a concealed object by conducting a test in which a first characteristic of a first dielectric constant associated with a person is determined, and a second characteristic of a second dielectric constant associated with the concealed object and or weapons of mass destruction is determined to expedite data transmission and communication to first responders.

The invention relate to systems and methods for sequencing polynucleotides, as well as detecting reactions and binding events involving other biological molecules. The systems and methods may employ chamber-free devices and nanosensors to detect or characterize such reactions in high-throughput. Because the system in many embodiments is reusable, the system can be subject to more sophisticated and improved engineering, as compared to single use devices.

A wearable outfit comprising nano-sensors for continuous physiological condition and body temperature monitoring configured with load cells and strain gages for monitoring and measuring the degree of force impacted on an athlete during a hit or collision in a sporting event such as a football game, the strain gages are composed of electrical resistance elements embedded in a micro-fibered material and etched in a silicon substrate and located in a position that is in contact with the body of the wearer. The wearable outfit also enables wireless communication to computer device configured for algorithm and analysis of the detected conditions and for signaling personnel about the severity of an injury or collision through either auditory or visual device. The computer device is configured with algorithms for enabling accurate interpretation of the physiological condition or body surface temperatures of personnel.

The invention provides a friction nanometer sensor based on an electron transfer mechanism. The sensor comprises a first conducting element, a second conducting element and a space maintaining element, wherein the lower surface of the first conducting element is in contact with a placed first friction layer; a nanometer structure which directly grows on the upper surface of the second conducting element or is chemically linked with the upper surface of the second conducting element through keys is a second friction layer; the space maintaining element is used for enabling the lower surface of the first friction layer to be realize the face-to-face state with the upper surface of the second friction layer and to maintain a certain distance with the upper surface of the second friction layer; the first friction layer and the second friction layer can be at least in partial contact under the effect of external force, and the original distance is recovered through the effect of the space maintaining element when the external force is withdrawn; meanwhile, electric signals are outwards output through the first conducting element and the second conducting element; and in addition, the electric signals can be changed after the second friction layer is combined with substances of targets to be detected. The sensor has the advantages of self driving performance, high sensitivity, portability and the like.

A method and system for evaluating status and response of a mineral-producing field (e.g., oil and/or gas) by monitoring selected chemical and physical properties in or adjacent to a wellsite headspace. Nanotechnology sensors and other sensors are provided for one or more underground (fluid) mineral-producing wellsites to determine presence/absence of each of two or more target molecules in the fluid, relative humidity, temperature and/or fluid pressure adjacent to the wellsite and flow direction and flow velocity for the fluid. A nanosensor measures an electrical parameter value and estimates a corresponding environmental parameter value, such as water content or hydrocarbon content. The system is small enough to be located down-hole in each mineral-producing horizon for the wellsite.

A biomolecular sensor system includes an array of magnetoresistive nanosensors designed for sensing biomolecule-conjugated superparamagnetic nanoparticles. Materials and geometry of each sensor element are designed for optimized sensitivity. The system includes magnetic field generators to apply forces to superparamagnetic nanoparticles for 1) nanoparticle manipulation, 2) sensor magnetic biasing, 3) magnetic pull-off measurement for differentiation against non-specific association, and 4) removal of all particles from the sensor array surface.

The invention discloses a nano-sensor for detecting antibiotics. The nano-sensor comprises gold nano-particles, wherein the surfaces of the gold nano-particles are modified with at least one kind of aptamers which can be specifically bonded with specific antibiotics through an Au-S bond, and the aptamers are labeled with a fluorescent dye. The invention aims to provide the nano-sensor capable of quickly, accurately, qualitatively and quantitatively determining one kind of antibiotics or synchronously testing the multiple kinds of antibiotics, and also provide a preparation method and application of the nano-sensor.

Disclosed are magnetic nanosensors or transducers that permit measurement of a physical parameter in an analyte via magnetic reasonance measurements, in particular of non-agglomerative assays. More particularly, in certain embodiments, the invention relates to designs of nanoparticle reagents and responsive polymer coated magnetic nanoparticles. Additionally provided are methods of use of nanoparticle reagents and responsive polymer coated magnetic nanoparticles for the detection of a stimulus or an analyte with NMR detectors.

The invention relates to a method for preparing a pyramid array on a monocrystalline silicon substrate, and belongs to the technical field of manufacture of photovoltaic and semiconductor devices. The method comprises the following steps of: covering microballons in periodic arrangement on the surface of a monocrystalline silicon piece, and annealing near the glass transition temperature point of the microballoon; in oxygen atmosphere, obtaining a microballoon array in separation arrangement after etching by use of inductive coupling plasma; depositing a metallic titanium membrane on the monocrystalline silicon piece uniformly by a physical vapor deposition manner; and putting a silicon wafer with a masking film into an alkaline solution containing a surfactant for corrosion so as to obtain the pyramid array in order arrangement. The method is simple in process, short in preparation period and mature in technology; and three structures such as a positive pyramid array, an inverted pyramid array and a positive and inverted pyramid combined array can be obtained by a method for preparing a template through selecting and fine turning. The method has wide application value in the fields of photovoltaic, magnetic memory devices, nano photoelectric devices, nano sensors, surface raman enhancement and surface plasma effect and the like.

A universal microelectromechanical (MEMS) nano-sensor platform having a substrate and conductive layer deposited in a pattern on the surface to make several devices at the same time, a patterned insulation layer, wherein the insulation layer is configured to expose one or more portions of the conductive layer, and one or more functionalization layers deposited on the exposed portions of the conductive layer to make multiple sensing capability on a single MEMS fabricated device. The functionalization layers are adapted to provide one or more transducer sensor classes selected from the group consisting of: radiant, electrochemical, electronic, mechanical, magnetic, and thermal sensors for chemical and physical variables and producing more than one type of sensor for one or more significant parameters that need to be monitored.