Abstract: The application relates to an ultrasonic transducer comprising a carrier with conductor traces and a piezoelectric element with electrodes, wherein the piezoelectric element has a contact side which is fixed on the carrier, and wherein the conductor traces and the electrodes are electrically coupled via the contact side of the element.

Abstract: A beam-forming and deflecting optical system for a laser machining device includes at least two optical elements, which are arranged one behind the other in the direction of the laser beam and which are formed by wedges with respective wedge angles, wherein at least one optical element is connected to a drive for the rotation of the optical element about the optical axis, whereby an optical wedge can be rotated relative to the at least one other optical wedge. Also a method for machining a workpiece uses a collimated laser beam. In order to achieve different shapes of the laser beam on the workpiece, each of the optical wedges, which are arranged one behind the other, in each case cover only a part of the laser beam.

Abstract: A beam-forming and deflecting optical system for a laser machining device includes at least two optical elements, which are arranged one behind the other in the direction of the laser beam and which are formed by wedges with respective wedge angles, wherein at least one optical element is connected to a drive for the rotation of the optical element about the optical axis, whereby an optical wedge can be rotated relative to the at least one other optical wedge. Also a method for machining a workpiece uses a collimated laser beam. In order to achieve different shapes of the laser beam on the workpiece, each of the optical wedges, which are arranged one behind the other, in each case cover only a part of the laser beam.

Abstract: A drivetrain of a motor vehicle having a parking lock for selectively locking the drivetrain, and having an electric motor and a power axle, which is permanently drive-coupled to the electric motor and which via a disconnect clutch can be selectively drive-coupled to at least one wheel of the motor vehicle. The parking lock and the disconnect clutch can be actuated by a common actuator.

Abstract: A torque transmission device for a motor vehicle having a locking mechanism for locking at least one wheel of the motor vehicle, which wheel is connected to an output shaft of the torque transmission device.

Abstract: A torque transmission device for a motor vehicle having a locking mechanism for locking at least one wheel of the motor vehicle, which wheel is connected to an output shaft of the torque transmission device.

Abstract: A drivetrain of a motor vehicle having a parking lock for selectively locking the drivetrain, and having an electric motor and a power axle, which is permanently drive-coupled to the electric motor and which via a disconnect clutch can be selectively drive-coupled to at least one wheel of the motor vehicle. The parking lock and the disconnect clutch can be actuated by a common actuator.

Abstract: A process for producing active material for an electrode of an electrochemical element includes providing carbon particles, applying a silicon precursor to surfaces of the carbon particles, and thermally decomposing the silicon precursor to form metallic silicon.

Abstract: Disclosed is a fluid discharging device (1) for separately discharging at least two fluids comprising and inner nozzle (3) for discharging a first fluid and a coaxially arranged outer nozzle (12) for discharging a second fluid.

Abstract: The invention relates to a fluid discharging device for separately discharging at least two fluids comprising an inner nozzle for discharging a first fluid and a coaxially arranged outer nozzle for discharging a second fluid. Such a fluid can be liquid or gas or a mixture thereof. Mixtures of liquid or gas comprise fluids having gas as the continuous phase and liquid as the disperse phase (e.g. aerosols) and fluids having liquid as the continuous phase and gas as the disperse phase (e.g. carbonated water). The invention further relates to a device and a method for wet treating a flat disc-like substrate, such as semiconductor wafers, flat panel displays or compact discs utilizing such a fluid discharging device. If in the following the term wafer is used, such disk-like substrates are meant.