Abstract: The invention relates to a membrane. Partly permeable membranes often have holes or perforations having a specific diameter to allow substances having a smaller particle diameter to pass through, but to hold back substances having a larger particle diameter. Such membranes are subject to wear primarily at the holes, i.e. cracks form which grow through the membrane proceeding from a hole. Particularly in the case of micromechanical membranes having holes having a small diameter in the range of 1 ?m or less, it is very difficult to detect the state of the membrane, in particular whether the latter has cracks. Membranes having cracks can then undesirably allow passage even of those particles which should actually be held back. In medical or hygienic applications, the function can then be impaired.

Abstract: The present invention relates to a gas sensor (1) for detecting gases, with at least one gas-sensitive layer which is applied to a substrate (2), wherein at least one conductor track (3) for contact-connecting the layer is also provided on the substrate (2), and wherein the conductor track (3) is formed from a doped metal oxide material with non-catalytic properties in order to avoid the conductor track (3) influencing the detection of the gas. This avoids the disadvantages of the prior art and provides contact-connection of the gas-sensitive layers which does not influence the sensitive properties when detecting the gas by means of the layer.

Abstract: A device and method for testing a fibre-composite component, which is to be processed by means of bonding, for the presence of at least one substance out of a selection of possible contaminants. A surface heating device for regional heating of a part-zone of the fibre-composite component to be bonded is performed for desorption of contaminants. A sensor array with a plurality of sensors detects contaminants in the gas phase, and a control device ascertains and signals contaminations which are found. An extractor device can be employed to extract machining dust from the fibre-composite component to a desorption device.

Abstract: The invention relates to a gas detection system (1) for detecting gases, vapors and biological pathogens, having at least one receptor (4) arranged on a line (5) connecting the ambient air (7) to an air storage unit, wherein the gas detection system (1) is designed as a “breathing” system containing clean CO2-carrying and moisture-saturated air in the air storage unit (2), wherein the operating temperature of the gas detection system (1) is the room temperature. Additionally, a method is proposed for detecting gases, vapors and biological pathogens using the inventive gas detection system. This avoids the shortcomings of the known solutions of the prior art, and an improved and more cost-effective solution for detecting trace gases is made available.

Abstract: The invention relates to a membrane. Partly permeable membranes often have holes or perforations having a specific diameter to allow substances having a smaller particle diameter to pass through, but to hold back substances having a larger particle diameter. Such membranes are subject to wear primarily at the holes, i.e. cracks form which grow through the membrane proceeding from a hole. Particularly in the case of micromechanical membranes having holes having a small diameter in the range of 1 ?m or less, it is very difficult to detect the state of the membrane, in particular whether the latter has cracks. Membranes having cracks can then undesirably allow passage even of those particles which should actually be held back. In medical or hygienic applications, the function can then be impaired.

Abstract: The invention relates to a gas detection system (1) for detecting gases, vapors and biological pathogens, having at least one receptor (4) arranged on a line (5) connecting the ambient air (7) to an air storage unit, wherein the gas detection system (1) is designed as a “breathing” system containing clean CO2-carrying and moisture-saturated air in the air storage unit (2), wherein the operating temperature of the gas detection system (1) is the room temperature. Additionally, a method is proposed for detecting gases, vapors and biological pathogens using the inventive gas detection system. This avoids the shortcomings of the known solutions of the prior art, and an improved and more cost-effective solution for detecting trace gases is made available.

Abstract: A device for detecting chemical or biological substances includes an analytical instrument for detecting the substances and for providing information concerning the qualitative or quantitative presence of the substances, and also a contamination sensor for measuring the degree of contamination of the analytical instrument and/or of the device.

Abstract: The present invention relates to a gas sensor (1) for detecting gases, with at least one gas-sensitive layer which is applied to a substrate (2), wherein at least one conductor track (3) for contact-connecting the layer is also provided on the substrate (2), and wherein the conductor track (3) is formed from a doped metal oxide material with non-catalytic properties in order to avoid the conductor track (3) influencing the detection of the gas. This avoids the disadvantages of the prior art and provides contact-connection of the gas-sensitive layers which does not influence the sensitive properties when detecting the gas by means of the layer.

Abstract: In a method and apparatus for detecting toxic chemical hazardous materials and warfare agents in a gas, the gas is exposed to a substrate with a hydrogen terminated surface. The substrate may be made from a nonconductor material with available surface conductivity, or from a semiconductor material. The electrical resistance at the hydrogen terminated surface is measured to detect the presence of the hazardous materials and warfare agents. A method of producing such a substrate detector is also disclosed.

Abstract: The present invention relates to a device (1) for detecting chemical or biological substances, having an analytical instrument (2) for detecting the substances and for providing information concerning the qualitative or quantitative presence of the substances, wherein the device (1) additionally has a contamination sensor (3) which is constructed for measuring the degree of contamination of the analytical instrument (2) and/or of the device (1).

Abstract: An open stator axial flux asynchronous induction electric motor has an open stator having two spaced insulating supports with a slot extending from a periphery of each of the supports to an inner location. A plurality of poles extend between and are secured to the supports. The stator has either distributed winding or salient phase pole windings associated with at least some of the poles with an opening between adjacent poles in the regions of the slots in the supports. The motor has a rotor with a shaft extending through the slots and at right angles to the supports. Two spaced rotor discs are present on the shaft and are located at either side of the stator. Each disc is made of a magnetically permeable material and has either an inner face of electrically conductive material or an inner face with conductive paths which function as rotor windings.