Embodiments relate to a system for particulate matter collection and analysis. The embodiments include system components and an associated control system. One or more of the components are dynamically adjustable. Fluid flow is captured by a capture medium positioned relative to a fluid channel, and particulate matter present within the fluid flow is acquired. A modifiable component is provided relative to the capture medium. The control system is provided in communication with the system components and functions to provide and support dynamic adjustment of the modifiable component in response to acquired particulate matter and analysis thereof.

A field effect transistor (FET) biosensor for virus detection of a selected virus within a sample volume is disclosed. The FET comprises a semiconductor substrate, a source and drain electrode on the substrate, the electrodes spaced to form a channel. A gate electrode carried on the substrate and located in the channel between the source and drain electrodes. An insulating layer is coupled to a top surface of the gate electrode and a bottom surface of the source and drain electrodes, with an open channel above the insulating layer. A channel material is coupled to the insulating layer. Aptamers are oriented within the open channel to bind to the channel material and with the selected virus to enable a detection of the selected virus by the FET biosensor based on a change in drain-source current at a selected gate voltage.

A field effect transistor (FET) biosensor for virus detection of a selected virus within a sample volume is disclosed. The FET comprises a semiconductor substrate, a source and drain electrode on the substrate, the electrodes spaced to form a channel. A gate electrode carried on the substrate and located in the channel between the source and drain electrodes. An insulating layer is coupled to a top surface of the gate electrode and a bottom surface of the source and drain electrodes, with an open channel above the insulating layer. A channel material is coupled to the insulating layer. Aptamers are oriented within the open channel to bind to the channel material and with the selected virus to enable a detection of the selected virus by the FET biosensor based on a change in drain-source current at a selected gate voltage.

Disclosed are methods for determining and classifying aircraft air contaminants using contaminant analyzers comprising a contaminant collector comprising a membrane and a heater vaporizing captured contaminants; a gravimetric sensor generating a proportionate response when contaminant mass is added to or removed from the sensor, the sensor arranged to receive contaminants desorbed from the membrane when the membrane is heated; a frequency measurement device, measuring the response generated by the sensor as the contaminant is added to and removed from the sensor; a computer readable medium bearing a contaminant recognition program and calibration data; a processor executing the recognition program, the program including a module classifying contaminants by type, and a module using the calibration data for comparison with magnitude of the response generated by the sensor to calculate contaminant concentration; and, a pump, generating flow of aircraft air through the contaminant collector before and after the membrane is heated.

Embodiments relate to a system for particulate matter collection and analysis. The embodiments include system components and an associated control system. One or more of the components are dynamically adjustable. Fluid flow is captured by a capture medium positioned relative to a fluid channel, and particulate matter present within the fluid flow is acquired. An image capture device is employed to analyze captured particulate matter. In addition, a modifiable component is provided relative to the capture medium, the fluid channel and the image capture device. The control system is provided in communication with the system components and functions to provide and support dynamic adjustment of one or more of the modifiable component, image capture device, or capture medium in response to the acquired particulate matter and analysis thereof.

The following is an apparatus and a method that enables the automated collection and identification of airborne particulate matter comprising dust, pollen grains, mold spores, bacterial cells, and soot from a gaseous medium comprising the ambient air. Once ambient air is inducted into the apparatus, aerosol particulates are acquired and imaged under a novel lighting environment that is used to highlight diagnostic features of the acquired airborne particulate matter. Identity determinations of acquired airborne particulate matter are made based on captured images. Abundance quantifications can be made using identity classifications. Raw and summary information are communicated across a data network for review or further analysis by a user. Other than routine maintenance or subsequent analyses, the basic operations of the apparatus may use, but do not require the active participation of a human operator.

Methods for determining and classifying by type aircraft air contaminants, and aircraft air contaminant analyzers, are disclosed.

An air contaminant collector device for use in an aircraft air contaminant analyzer, and a method for its use, are disclosed.

A sensor element includes a membrane structure suspended on a frame structure, wherein the membrane structure includes a membrane element and an actuator. The membrane structure is deflectable in a first stable deflection state and in a second stable deflection state and is operable in a resonance mode in at least one of the first and the second stable deflection states. The actuator is configured to deflect the membrane structure in a first actuation state into one of the first and the second stable deflection states, and to operate the membrane structure in a second actuation state in a resonance mode having an associated resonance frequency.

Sensors employing bulk acoustic wave (BAW) resonators are used to assay characteristics of blood. The BAW sensors may be used to sense viscosity of a sample comprising blood to determine coagulation properties of the blood. The viscosity of the blood may be evaluated in the presence of agents that inhibit coagulation or that promote coagulation. The change in viscosity of the sample in the presence of such agents may provide information regarding whether the blood suffers from a coagulation disorder.