Abstract: A current measuring device for measuring the current through one or a plurality of conductors (L1, L2, L3) of an array of n conductors, n being a natural number≧2, comprises n+1 magnetic-field-sensitive sensors (S1 to S4) which are arranged such that two respective magnetic-field-sensitive sensors are arranged adjacent a respective conductor. A unit (12) for reading out output signals of the magnetic-field-sensitive sensors is provided. Furthermore, the current measuring device is provided with a unit (10) for calculating the current through one or a plurality of conductors on the basis of the read output signals and on the basis of coefficients which describe the influence of currents flowing through each of the n conductors and of a constant magnetic field on the output signal of each of the magnetic-field-sensitive sensors.

Abstract: In the present method for monitoring and controlling a screwing process in creating a screw connection, ultrasonic pulses are coupled into the screw using a pulse-echo method before and during the tightening of the screw. The time for the pulses to traverse the length of the screw, i.e., the propagation time, is measured. A dependency of the propagation time on the predetermined tension of the screw is calculated from the material specific characteristic values of the screw and the measured propagation time. By comparing the values of a change in propagation time dependent on a parameter of the screw with the values of a change in propagation time dependent on the predetermined tension of the screw, the screwing process can be monitored.

Abstract: The invention concerns a micropump for the substantially continuous delivery of a mass flow, the micropump having a sleeve axis and an offset axis of rotation. An internal rotor meshes with an external rotor in a sleeve and at least one outlet-side pressure opening in a first end-face termination part. Both rotors have a dimension smaller than 10 mm. The invention further concerns a micromotor of similar construction in which the diameter of the rotors and the casing are below 10 mm. The pump and motor are extremely miniaturized yet still permit a continuous flow with high feed pressure and high output.

Abstract: The present invention relates to a method of connecting two semiconductor components comprising the steps of providing in a first main surface of a first semiconductor substrate first component structures including first contact areas, forming in said first semiconductor substrate via holes filled with electrically conductive material and electrically insulated from said first semiconductor substrate, said via holes extending down to the second main surface of the first semiconductor substrate and being connected in an electrically conductive manner to said first contact areas via an electrically conductive connection material on the first main surface of said first semiconductor substrate, forming on the second main surface of the first semiconductor substrate first lands which are connected in an electrically conductive manner to the first contact areas via the electrically conductive material in the via holes, providing on a second semiconductor substrate second component structures including second contac

Abstract: A device for the contactless detection of a potentially existing essentially edge-free irregularity in a convex surface, which has a structuring that is delimited by edges, comprises a unit for creating a three-dimensional representation of the surface, a unit for extracting the convexity from the three-dimensional representation of the surface and for smoothing the edges of the structuring so as to obtain a convex-free representation of the convex surface which exhibits the irregularity and the structuring, whose edges have now been smoothed, a unit for comparing the convex-free representation with a threshold value so as to identify areal regions of the convex-free representation which are determined by a predetermined relationship to the threshold value, and a unit for analyzing the areas of the identified regions, a region being detected as an irregularity if its area exceeds a predetermined area.

Abstract: The invention concerns a diamond body designed to enable thermal contacting with at least one source of heat (30) and presenting at least one recess (13, 15) defining an angular position in relation to the mechanical tensions generated by said or any source of heat (30). Consequently, the mechanical tensions generated at various temperatures, either, for example, by various expansion coefficients of the diamond body (12) or by the source of the heat (30) featured by one semi-conductor component, are at least partly compensated, resulting in the possibility to take advantage of the exceptional thermoconductive capacity and insulating characteristics of the diamond, including diamond bodies (12) of a relatively big size.

Abstract: An actuator component for a piezoelectrically-driven microatomizer comprises a diaphragm formed in a semiconductor substrate, a piezoelectric actuator which is arranged on a surface of the diaphragm and by means of which the diaphragm can be caused to vibrate, and a passage formed in the semiconductor substrate and used for supplying a liquid to be atomized from an inlet end to the diaphragm surface located opposite the piezoelectric actuator.

Abstract: The present invention relates to a device and a process using a laser beam to scan an area of an object, in particular, for selective laser melting of metal powder for fabrication of a mold. The device is provided with a plotter mechanic with two linear axes (4, 5) over which a carrier element can be positioned and moved, an optical means, which guides the laser beam to the carrier element or provides the laser beam at the carrier element, a scanning means (9) at the carrier element, which guides the laser beam to the area of the object and moves the laser beam back and forth in a presetable angle, a focusing optic (15) for focusing the laser beam (8) onto the area of the object (11).

Abstract: An electrode consisting of a substrate and a diamond layer applied to the substrate, in which the applied diamond layer is pore-free, and a process for producing a diamond-coated electrode, in which the process comprises at least the following steps: a) cleaning the surface of the substrate; b) seeding the surface of the substrate with a high diamond nucleation density; c) coating the surface of the substrate with diamond.

Abstract: The invention relates to a process for producing functional coatings with organofunctional silanes, a metal compound and difficultly volatile oxides, in which a) a hydrolytic condensation is performed, optionally in the presence of a condensation catalyst and/or additives, of the following components 1. at least one crosslinkable organofunctional silane, 2. at least one metal compound, 3. optionally at least one non-crosslinkable organofunctional silane and 4. optionally one or more difficultly volatile oxides soluble in the reaction medium; b) that to said hydrolytic condensate is added an organic, crosslinkable prepolymer; and c) the thus obtained coating solution is applied to a substrate and subsequently cured.

Abstract: A method for segmentation and identification of nonstationary time series comprises the steps of:

Abstract: Process and control arrangement for introducing pulsing energy introduction into magnetron discharges. The process includes feeding a charge to the electrodes of a magnetron arrangement via a ignition source at a time t0, and, after the feeding of the electric charge, determining an ignition of the magnetron discharge. The process also includes introducing a current, having a predetermined value, from a boost source at a time t1, and, at a time t2, separating the ignition source from the electrodes of the magnetron arrangement. The introduction of the current by the boost source continues for a certain duration tEIN. The process also includes interrupting the introduction of the electric energy for a predetermined time tAUS.

Abstract: Dialyzer and process of modification of a dialyzer with a laser are disclosed. Process for producing a dialyzer includes a medium IR pulsed laser surface treatment at least in place of the last precision cut. Process reduces standstill times during treatment of dialyzer ends to achieve a smooth surface of the dialyzer ends. Dialyzer hollow membrane ends in entrance and exit regions in the region of plastic embedding are funnel shaped, have rounded edges, and, along with the plastic, form a smooth, melted, and purified surface.

Abstract: Disclosed is a method for classifying samples wherein the information content of a sample is divided up into two information areas. The first area contains necessary information and the second area contains sufficient information. An initially imprecise preselection concerning a plurality but extremely limited number of classes is made through the necessary information area. After said preselection, identification occurs with the sufficient information area in order to pinpoint the initially imprecise preselection in relation to an effective target class. This enables classification quality to be improved by means of new classifiers or new principal formulations of classification formulations.

Abstract: In a method of producing a micromechanical structure for a micro-electromechanical element, a first intermediate layer, which is applied to a first main surface of a first semiconductor wafer, is structured in a first step so as to produce a recess. The first semiconductor wafer is then connected via the first intermediate layer to a second semiconductor wafer in such a way that a hermetically sealed cavity is defined by the recess. Finally, one of the wafers is thinned from a surface facing away from said first intermediate layer so as to produce a diaphragm-like structure on top of the cavity. At least one further intermediate layer is provided between the two semiconductor wavers which, prior to the connection of the two semiconductor wafers, is structured in such a way that the structure formed in said at least one further intermediate layer and the recess in said first intermediate layer define the cavity.

Abstract: In a method for handling in parallel a plurality of circuit chips, which are arranged in a first arrangement, which corresponds to their arrangement in the original wafer, on the surface of an auxiliary carrier, the plurality of circuit chips is picked up by a plurality of pick up devices. The plurality of pick up devices with the picked up circuit chips is moved simultaneously to one or several carriers, in such a way that, simultaneously with the motion, the first arrangement of the circuit chips is changed into a second arrangement, which is different from the first arrangement. Then the circuit chips are simultaneously placed in the second arrangement on the one or several carriers.

Abstract: For a quantification of the electrostatic responsiveness and for the extraction of high-current parameters of integrated circuits and individual structures (DUT—“Device under Test”) a method and a device are proposed wherein a high current pulse can be injected via a terminal into the DUT under strictly defined marginal conditions. The substrate into which the circuit to be analysed is integrated, together with the reference electrode disposed at a defined spacing, forms a capacitor dependent on the actual circuit and determining the loading parameters, which capacitor has a dielectric consisting, as a rule, of air. The method is characterised by an intrinsic impedance which is almost constant throughout the entire system and defined by the mechanical and material properties. It is also possible to use a complete semiconductor wafer including a plurality of circuits as substrate.

Abstract: The present invention relates to a device for actively supporting the flow of body fluids, comprising an artificial flow guide system (10) with an operational area into which a pump (1) is embedded in such a way that it can transport blood from at least one inlet opening (3) situated in the guide system to at least one outlet opening (4) situated in the guide system; a flexible feed hose (5) connected to the flow guide system; an energy or force transmission line (6) which is guided through the interior of the flexible feed hose and which, when the device is in the operational state, transmits energy or force substantially continuously to the pump from a drive unit for the extracorporeal generation of this energy or force.

Abstract: A plastic material made from a polymer blend, is characterized in that said material contains at least one lignin-based natural polymer, in particular based on alkali lignin produced during the extraction of cellulose, and at least one other synthetic and/or natural polymer which increases the impact resistance, proteins excluded. The inventive plastic material has excellent characteristics. It is biodegradable due to the natural polymer content and has, to a considerable extent, an ecologically neutral CO2 balance. The polymer blend can be used advantageously in place of wood or wood materials.

Abstract: The invention concerns composites with excellent barrier properties to gases and water vapor. Such composites can be used, e.g., in foodstuff packaging or as technical membranes. The outstanding barrier effect is achieved by arranging on a substrate material, which, for example, may consist of biodegradable polymers, at least two films. At least one of these films consists of an organic-inorganic hybrid polymer (ORMOCER), at least one further film of a further barrier material or of a substrate material.