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9016131 Method for detecting wavelength with sound pressure sensors inserted in a liquid  
At least two sound pressure sensors in parallel with each other are inserted into a liquid to which waves are applied. The sound pressure sensors have a bar-like shape and the same sensitivity. In...
8991234 Valproic acid biosensor and method for measuring concentration of valproic acid  
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...
8826724 Carbon dioxide sensor  
Chemical sensors such as carbon dioxide sensors and methods for making such sensors are disclosed. An example carbon dioxide sensor may include a substrate, with a sensing beam supported by the...
8789211 Mode-synthesizing atomic force microscopy and mode-synthesizing sensing  
A method of analyzing a sample that includes applying a first set of energies at a first set of frequencies to a sample and applying, simultaneously with the applying the first set of energies, a...
8763442 Combined acoustic excitation and standoff chemical sensing for the remote detection of buried explosive charges  
In representative embodiments, a system includes an acoustic emitter, a controller, an optical sensor, and an indicator for indicating a detection of a predetermined trace chemical vapor by the...
8746037 Ultrasonic apparatus and method for measuring the concentration of gas  
In an ultrasonic apparatus for measuring the concentration of gas provided with two ultrasonic oscillators for transmitting/receiving an ultrasonic wave, arranged opposite to each other in piping...
8733149 Film bulk acoustic wave resonator-based ethanol and acetone sensors and methods using the same  
The present invention relates generally to the detection of alcohol. The present invention relates more particularly to the film bulk acoustic wave resonator-based devices, and their use in the...
8695428 Single input multi-output surface acoustic wave device  
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...
8689606 Gas sensing using ultrasound  
A sensor chip (1030) for gas has cells (200) for emitting and receiving ultrasound and is configured for a sufficiently large frequency range and for measuring concentration of at least one of the...
8586351 Electronic detection of biological materials  
A hybridization detecting device, wherein a probe cell has a body of semiconductor material forming a diaphragm, a first electrode on the diaphragm, a piezoelectric region on the first electrode,...
8573031 Tunable multiwalled nanotube resonator  
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...
8567232 Gas sensor using nanotubes  
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...
8548755 Flow rate measurement device  
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...
8544314 Carbon dioxide sensor with functionalized resonating beams  
A carbon dioxide sensor comprising a first beam that includes a functionalized surface and a second beam that includes a functionalized surface such that reduced-drift differential sensing of...
8516880 Gas sensing system with quartz crystal substrate  
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...
8492167 Methods and apparatus for assay measurements  
Methods and apparatuses for determining whether a fluid has been introduced into an assay measurement apparatus involving delivering a fluid to a surface of a resonant device. The methods also...
8475715 Resonant sensor systems and methods with reduced gas interference  
A system having reduced gas interference that includes a fluid chamber and a resonant sensor device in fluid communication with a fluid in the fluid chamber. The system includes a fluid control...
8464577 Quartz sensor and sensing device  
To provide a quartz sensor capable of detecting a sensing target with high sensitivity also in measurement in a liquid phase in which a difference in Q values at the time of measurement in the...
8456062 Surface acoustic wave sensor device and method of controlling liquid using the same  
A surface acoustic wave sensor device includes a main body and a liquid controller disposed external to the main body. The main body includes a sample chamber, a surface acoustic wave sensor...
8448494 Integrated electronic microbalance plus chemical sensor  
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...
8381574 Reduction of pressure induced temperature influence on the speed of sound in a gas  
An apparatus for determining the proportion of gases in a gas mixture, has a measurement chamber having a chamber defining structure, a gas inlet and a gas outlet, an ultrasound source and an...
8375768 Ionic liquid thin layer sensor for electrochemical and/or piezoelectric measurements  
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...
8365576 Method for detecting low concentration gas  
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...
8349611 Resonant sensors and methods of use thereof for the determination of analytes  
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...
8342005 Micro-optical-mechanical system photoacoustic spectrometer  
All-optical photoacoustic spectrometer sensing systems (PASS system) and methods include all the hardware needed to analyze the presence of a large variety of materials (solid, liquid and gas)....
8302458 Portable analytical system for detecting organic chemicals in water  
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...
8291745 Analyte sensing device  
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...
8288163 Apparatus and method for detecting triacetone triperoxide  
The present invention relates to a device and process for the quick and reliable online detection of triacetone triperoxide (TATP).
8256275 In-liquid-substance detection sensor  
An in-liquid-substance detection sensor that achieves size reduction and detection accuracy improvement includes a piezoelectric substrate, at least two SAW devices provided on one major surface...
8252598 Method of sensing chemical and bio-molecular analytes and sensing system using a microcantilever  
Methods and systems of detecting analytes using a microcantilever system are generally described. The microcantilever system generally includes micro- or nano-sized elements that can be...
8247949 Surface acoustic wave sensor device and method of controlling liquid using the same  
A surface acoustic wave sensor device includes a main body and a liquid controller disposed external to the main body. The main body includes a sample chamber, a surface acoustic wave sensor...
8230720 Functionalized monolayers for carbon dioxide detection by a resonant nanosensor  
A resonant nanosensor apparatus associated with a functionalized monolayer for detecting carbon dioxide and a method of forming the same. A wafer including a sensing vibrating beam and a reference...
8227261 Methods and apparatus for assay measurements  
Methods and apparatuses for performing assays involving binding material elements with a plurality of bonds over a substantial area of a surface of a resonant device establishing a normalized...
8215170 Chemical and biological sensing using tuning forks  
A device for sensing a chemical analyte is disclosed. The device is comprised of a vibrating structure having first and second surfaces and having an associated resonant frequency and a wire...
8166799 Gas concentration distribution measuring apparatus  
A gas concentration distribution measuring apparatus includes a gas detection part, a gas detector position information measuring part, and a gas concentration distribution display unit. The...
8117897 Elliptical photo-acoustic sensor  
An elliptical photo-acoustic spectrometer chamber design will result in a larger intensity signal at the pick-up microphone and allow high frequency light modulation. This makes the spectrometer...
8097067 Runtime sensor for small forced air handling units  
Herein are disclosed devices and methods that can be used to provide an indication of the need to change a filter in a small forced air handling unit, based on the actual operating time (runtime)...
8069703 Semi-continuous detection of mercury in gases  
A new method for the semi-continuous detection of heavy metals and metalloids including mercury in gaseous streams. The method entails mass measurement of heavy metal oxides and metalloid oxides...
8060334 Aircraft pitot-static tube with ice detection  
An aircraft Ice Detection pitot-static tube is described which uses sensors integrated into the pitot-static tube to determine when and where the pitot-static tube is icing up. Temperature,...
7930923 Quartz crystal microbalance with nanocrystalline oxide semiconductor thin films and method of detecting vapors and odors including alcoholic beverages, explosive materials and volatilized chemical compounds  
A nanocrystalline ITO thin film formed on a quartz crystal microbalance (QCM) facilitates detection of gaseous compounds emitted from an analyte. Adsorption of gas molecules onto the...
7913541 Matrix nanocomposite containing aminocarbon nanotubes for carbon dioxide sensor detection  
The design and synthesis of a matrix nanocomposite containing amino carbon nanotubes used as a functionalized sensing layer for carbon dioxide detection by means acoustic wave sensing devices,...
7886577 Devices with surface bound ionic liquids and method of use thereof  
An ionic liquid bound on an exposed surface of a device such as for detecting organic chemicals, preferably a gas sensor is described. The gas sensor can operate at high temperatures with a fast...
7886575 High sensitivity acoustic wave microsensors based on stress effects  
Acoustic sensing utilizing a bridge structure coupled about a portion of at least two sides of said bridge to a base substrate, wherein said bridge includes a piezoelectric section and has at...
7814777 Background acoustic signal suppression in photoacoustic detector  
The present invention relates to a photo-acoustic device (100) for photo-acoustic analysis of a sample such as exhaled human breath. The device includes a sample cell cavity (102) for containing...
7816837 Surface acoustic wave sensor  
A surface acoustic wave sensor for detecting a target substance by measuring the change in frequency due to the mass applied to a reaction membrane placed on a surface acoustic wave element having...
7814776 Carbon nanotube-quartz resonator with femtogram resolution  
Methods for sensing and building sensors provide for adding nanotubes to a sensor to improve characteristics such as the Q-factor associated with the sensor. Mass loading and damping...
7784327 Reduction of pressure induced temperature influence on the speed of sound in a gas  
An apparatus for determining the proportion of gases in a gas mixture, has a measurement chamber having a chamber defining structure, a gas inlet and a gas outlet, an ultrasound source and an...
7752886 Measuring gas components together with a paramagnetic gas  
The invention concerns a gas analyzer, which comprises: an electromagnet that has an air gap; a power source for supplying cyclically variable electrical current/voltage to said electromagnet; a...
7681449 Metal loss rate sensor and measurement using a mechanical oscillator  
The present invention is a mechanical oscillator metal loss sensor for use in a corrosive or erosive environment. The elements include a mechanical oscillator that is mechanical excited with two...
7647814 Environment difference detector  
An environment difference detector includes an elastic surface wave element equipped with a substrate including a surface having an annular surface acoustic wave circulating path, a surface...

Matches 1 - 50 out of 289 1 2 3 4 5 6 >