Abstract: A composite body made of at least two ceramic layers, in which the ceramic layers are permanently bonded to one another at defined bonding points by a contact layer made of a bonding material. To achieve a permanent, thermally stable bond of ceramic layers having different coefficients of thermal expansion, the bonding material has a low modulus of elasticity. During the manufacture of the composite body, the bonding points of the ceramic layers are pretreated to form a porous surface structure, the bonding material is applied to these bonding points, and after the ceramic layers are laid one on top of another with bonding points facing toward one another and bonding material lying between them, the assembled composite body is subjected to a heat treatment.

Abstract: The present invention relates to a method for identifying pesticidally active substances. The present invention relates in particular to a binding assay with labelled phthalic diamides on membrane preparations and the displacement of these labelled phthalic diamides by unlabelled test substances.

Abstract: A microfluidic device which operates without the need for an external power source. The device includes a body structure, at least one microscale channel within the structure, a port for introducing fluid into the channel, and a power source internal to the structure for propelling the fluid through the channel. Various structures are described which embody the invention.

Abstract: A green ceramic insert having a green ceramic body provided with a recess extending through the ceramic body is provided, the recess being filled with a paste which may be converted into an electrical plated hole. A ceramic insert made from a sintered green ceramic insert of this type is also described. In addition, a ceramic green body or a green body composite is provided, which has at least one recess in some areas, into which one of the described green ceramic inserts is inserted. The ceramic insert may be integrally joined to the laminated composite, a conductive paste converted by sintering into a printed conductor being routed on the laminated composite in a manner electrically insulated from it, and electroconductively connecting the top of the laminated composite to its bottom via the electrical plated hole.

Abstract: A device for detecting a failure of a filter used to clean a gas stream, in particular an exhaust gas stream, of soot particulates, including a chamber which is insertable into the gas stream to be cleaned in addition to the filter and which is at least partially closed by a filter body and has at least one opening through which gas entering the chamber through the filter body can exit the chamber, at least one gas sensor for determining the concentration of at least one component of the gas to be cleaned being arranged in the chamber, and at least one second gas sensor for determining the concentration of the at least one component of the gas to be cleaned being arranged outside the chamber.

Abstract: A green ceramic body, in particular a green ceramic film having a function layer which contains platinum and is applied in at least some areas is described; this function layer is photostructurable in daylight and in the presence of oxygen. In addition, a method of producing such a green ceramic body is described, including the process steps: a) making available a green ceramic starting body, b) applying a photostructurable paste containing platinum to the starting body in at least some areas, in particular by printing, in daylight and in the presence of oxygen, and c) photostructuring the applied paste to form the function layer. The green ceramic body described here is suitable in particular for further processing to form a temperature sensor.

Abstract: A lambda sensor for motor vehicles which permanently displays an at least temporary thermal overload by means of an indicator which, for fast reliable and unambiguous diagnosis without major additional measurement effort or expense, includes an indication material having at least one limit temperature adapted to the maximum allowable operating temperature of the component, and when this limit temperature is exceeded in at least one material component, a microstructural change ensues.

Abstract: A gas sensor for determining the concentration of gas components in gas mixtures is used in particular to measure the concentration of nitrogen oxides in exhaust gases of internal combustion engines or in the interiors of motor vehicles. It contains an electrochemical measuring cell which includes a first electrode (31) situated on a solid electrolyte and an additional electrode (32). The electrode (31) is made of an oxide material containing lanthanum which at least catalytically decomposes nitrogen oxides. The pump current flowing between the electrodes (31, 32) is used as a measure of the nitrogen oxide concentration in the gas mixture.

Abstract: Microfluidic devices and methods for performing a microfluidic process are presented. A microfluidic device conforms with a standard well plate format. The device includes a well plate comprising a plate and an array of wells formed on or in the plate, and a microfluidic structure connecting at least two of the wells. The device can rely exclusively on gravitational and capillary forces that exist in channels within the microfluidic structure when receiving fluid streams. Also disclosed is a microfluidic device having an array of microfluidic structures, each connecting at least two wells of a well plate, and connecting three or more wells in alternative embodiments. With the present invention, a large number of microfluidic processes or reactions can be performed simultaneously.

Abstract: Microfluidic devices and methods for performing a microfluidic process are presented. A microfluidic device conforms with a standard well plate format. The device includes a well plate comprising a plate and an array of wells formed on or in the plate, and a microfluidic structure connecting at least two of the wells. The device can rely exclusively on gravitational and capillary forces that exist in channels within the microfluidic structure when receiving fluid streams. Also disclosed is a microfluidic device having an array of microfluidic structures, each connecting at least two wells of a well plate, and connecting three or more wells in alternative embodiments. With the present invention, a large number of microfluidic processes or reactions can be performed simultaneously.

Abstract: A measuring arrangement for the analysis of gas components in gas mixtures, having at least one electrochemical solid electrolyte test cell with at least one cathode in a diffusion channel is exposed to a gas mixture. The use of several cathodes wired one behind the other makes possible selective analysis of individual gas components. At the first cathode, oxygen is selectively pumped off by the use of specifically oxygen-ion-conductive layers so that another component of the gas mixture can be analyzed by the following electrode.

Abstract: A plasma reactor for treating exhaust gases of internal combustion engines is provided, the plasma reactor having a ceramic body with a plurality of channels running through it. A gas may be passed through a first set of channels, while a second set of channels contains an electrically conducting material such that a plasma is generated in the interior of the second set of channels by applying an electric voltage. Also, a method of manufacturing a plasma reactor is provided, whereby first a green ceramic body having a plurality of channels running through it is produced and sintered to form a ceramic body, and then an electrically conducting material is introduced into a second set of channels in the ceramic body.

Abstract: A gas sensor is for determining at least one physical quantity of a gas, e.g., an exhaust gas of an internal combustion engine, the gas sensor having a sensor element that is fixed in a housing of the gas sensor by a seal assembly. The seal assembly includes a sealing element, which has a ceramic and/or a metallic material. After the heat treatment, the sealing element has a maximum decrease in volume of 5 percent, or an increase in volume, based on the volume of the sealing element prior to the heat treatment.

Abstract: A ceramic green body made up of at least two ceramic green sheets that are glued together with a liquid adhesive is described. Further, a method of manufacturing a ceramic green body of this type is described, the surface of a first ceramic green sheet initially being provided at least in sections and at least on one side with the liquid adhesive, and the first ceramic green sheet being subsequently glued to a second ceramic green sheet. Finally, it is proposed to manufacture a ceramic body using this ceramic green body, which may be used, for example, in planar, ceramic exhaust gas sensors, or in ceramic multilayer hybrids as circuit carriers. To this end, after being glued, the ceramic green body is subjected to a heat treatment, during which the polymer matrix of the ceramic green sheets is first at least largely thermally decomposed and/or evaporated, and the body that remains is subsequently sintered.

Abstract: An electrochemical sensor for ascertaining gas concentrations in gases, particularly in exhaust gases of combustion engines, includes an oxygen-ion-conductive solid electrolyte which is provided with electrode layers arranged at a distance from one another and with at least one resistance heating element that is separated from the solid electrolyte by an electrical insulating layer, a foil binder layer being provided between the electrical insulating layer and the solid electrolyte. At least one electron-conductive intermediate layer is provided between the electrode-side electrical insulating layer and the adjacent solid electrolyte.

Abstract: A method of manufacturing multilayer actuators is described, in which films (1), known as green films, having regions applied thereon made of metal plating to implement electrodes, are processed into compressed multilayer composite elements before a sintering step. Film elements (4), whose area defines the cross-sectional area of a finished actuator, are individually separated from the green film (1) having metal plating and stacked into a film stack to prepare for the manufacture of a multilayer composite element. Furthermore, a device having separating means (31, 32, 33, 35) for performing the method is described, in which the separating means is designed for the purpose of individually separating film elements (4), whose area defines the cross-sectional area of a finished actuator, from the green film (1) and stacking the separated film elements (4) directly afterward.

Abstract: A photostructurable paste is proposed which is particularly suitable for manufacturing structured resistor layers or printed circuit traces on ceramic blank substrates. In this context, the paste has a light-sensitive organic binder and a filler material, the binder including a polymer, a photoinitiator, an inhibitor for a thermal polymerization, an organic disulfide and an organic solvent. The filler material is a platinum powder, a platinum compound or a mixture of a platinum powder or a platinum compound with a ceramic powder or a ceramic precursor compound.

Abstract: A method and a device are described for producing and/or screening composite arrangements, especially of layer [laminated; coated] composite arrangements, with respect to one desired property, a plurality of composite arrangements (16a, 16b, . . . , 26a, 26b, . . . ) being produced in continuous form, in that on a substrate (10, 20) at at least two defined points (11a, and 11b, . . . , 21a, 21b, . . . ) at least one educt is applied in each case for at least two different materials and the latter are synchronously subjected to the same reaction conditions for the formation of the materials. In this context, one material along with one point (11a, the 11b, . . . , 21a, 21b, . . . ) of the substrate constitutes one composite arrangement (16a, 16b, . . . , 26a, 26b, . . . ). A change in one property of each composite arrangement (16a, 16b, . . . 26a, 26b, . . . ) is determined under the influence of an external stimulus, and the composite arrangement (16a, 16b, . . . , 26a, 26b, . . .

Abstract: Microfluidic devices and methods for performing a microfluidic process are presented. A microfluidic device conforms with a standard well plate format. The device includes a well plate comprising a plate and an array of wells formed on or in the plate, and a microfluidic structure connecting at least two of the wells. The device can rely exclusively on gravitational and capillary forces that exist in channels within the microfluidic structure when receiving fluid streams. Also disclosed is a microfluidic device having an array of microfluidic structures, each connecting at least two wells of a well plate, and connecting three or more wells in alternative embodiments. With the present invention, a large number of microfluidic processes or reactions can be performed simultaneously.

Abstract: A green ceramic body, in particular a green ceramic film (10) having a function layer (12) which contains platinum and is applied in at least some areas is described; this function layer (12) is photostructurable in daylight and in the presence of oxygen. In addition, a method of producing such a green ceramic body is described, including the process steps: a) making available a green ceramic starting body (10), b) applying a photostructurable paste containing platinum to the starting body (10) in at least some areas, in particular by printing, in daylight and in the presence of oxygen, and c) photostructuring the applied paste to form the function layer (12). The green ceramic body described here is suitable in particular for further processing to form a temperature sensor (5).