Abstract:
A microelectromechanical component for interacting with a pressure gradient of a fluid. The component has a substrate with a through-cavity, a microelectromechanical transducer including a middle support layer and two diaphragm elements spaced apart from the middle support layer. The middle support layer has at least one center electrode. The diaphragm elements each have a separately contactable outer electrode. The diaphragm elements together with the middle support layer form one or more cavities on both sides of the middle support layer. The microelectromechanical transducer spans the through-cavity at least partially and is deformable along a vertical movement direction. The microelectromechanical transducer has a bending region. A deformation of the microelectromechanical transducer in the vertical movement direction results in a bending of the bending region. Spacers are arranged between the middle support layer and the diaphragm elements. At least one of the spacers is arranged in the bending region.
Abstract:
A fluidic microelectromechanical system (MEMS) device includes fluid interaction elements (FIEs) that can be displaced by an actuator to generate fluid flow. The FIEs include a serial arrangement of cantilevered lever arms to achieve, for example, high sound pressure levels in a micro speaker or high pump rates in a micropump as compared to some conventional MEMS devices.
Abstract:
A spectrometer device includes a Fabry-Perot interferometer unit, which comprises a first carrier substrate, wherein the first carrier substrate is arranged on a lower side of the Fabry-Perot interferometer unit and includes an optical aperture. The spectrometer includes at least one of a first substrate, which is arranged on an upper side of the Fabry-Perot interferometer unit, which faces away from the lower side, and a second substrate with the first carrier substrate arranged with the lower side on the second substrate. The spectrometer further includes a photodetector device arranged on or in the at least one of the second substrate and the first substrate. A first electrical connection region of the photodetector device and a second electrical connection region of the Fabry-Perot interferometer unit are electrically contacted from the same direction.
Abstract:
An optical switch includes a bus waveguide supported by a substrate, a coupling waveguide suspended over the bus waveguide, a reaction electrode coupled with, and adjacent to, the coupling waveguide, an actuation electrode supported by the substrate and configured to control a position of the coupling waveguide relative to the bus waveguide via the reaction electrode, and an optical antenna coupled with the coupling waveguide and disposed at a fixed distance from the bus waveguide. When a voltage difference between the reaction electrode and the actuation electrode is less than a lower threshold, the coupling waveguide is positioned a first distance from the bus waveguide, when the voltage difference between the reaction electrode and the actuation electrode is greater than an upper threshold, the coupling waveguide is positioned a second distance from the bus waveguide, and the second distance is less than the first distance.
Abstract:
A micromechanical component, having a carrier wafer having at least one micromechanical structure that is situated in a cavern; a thin-layer cap situated on the carrier wafer, by which the cavern is hermetically sealed; and a cap wafer situated on the thin-layer cap in the region of the cavern having the micromechanical structure, the cap wafer hermetically sealing a region of the thin-layer cap above the cavern.
Abstract:
A MEMS component including a first substrate having at least one first insulating layer and a first metallic coating on a first side; and including a second substrate having at least one second insulating layer and a second metallic coating on a second side, the second substrate including a micromechanical functional element, which is connected electroconductively to the second metallic layer. The first side and the second side are positioned on each other, the first insulating layer and the second insulating layer being interconnected, and the first metallic coating and the second metallic coating being interconnected. A method for manufacturing a MEMS component is also described.
Abstract:
A MEMS loudspeaker device and a corresponding manufacturing method are described. The MEMS loudspeaker device includes a first substrate having a first front side and a first rear side, which includes a first rear side cavity, which is at least partially covered by a sound generation device; a second substrate having a second front side and a second rear side, which includes a second rear side cavity, which is covered by a first perforated plate device; the second rear side being bonded to the first front side in such a way that the second rear side cavity is situated above the sound generation device; and a second perforated plate device, which is attached above the first perforated plate device; at least one of the first perforated plate device and of the second plate device being elastically deflectable in such a way that a passage of sound of the sound generation device may be modulated by an interaction of the first perforated plate device and the second perforated plate device.
Abstract:
A capacitive MEMS microphone element is described which may be used optionally for detecting acoustic signals (microphone mode) or for detecting ultrasound signals in a defined frequency range (ultrasound mode). In the layered structure of the MEMS microphone element, at least two carrier elements for the two electrode sides of a capacitor system are formed one above the other and at a distance from one another for signal detection. At least one of the two carrier elements is sound pressure-sensitive and at least one of the two electrode sides includes at least two electrode segments which are electrically contactable independent of one another, which together with the at least one electrode of the other electrode side form partial capacitances which are independent of one another.
Abstract:
For a MEMS component, in the layer structure of which at least one sound-pressure-sensitive diaphragm element is formed, which spans an opening or cavity in the layer structure and the deflections of which are detected with the aid of at least one piezosensitive circuit element in the attachment area of the diaphragm element, design measures are provided, by which the stress distribution over the diaphragm surface may be influenced intentionally in the event of deflection of the diaphragm element. In particular, measures are provided, by which the mechanical stresses are intentionally introduced into predefined areas of the diaphragm element, to thus amplify the measuring signal. For this purpose, the diaphragm element includes at least one designated bending area, which is defined by the structuring of the diaphragm element and is more strongly deformed in the event of sound action than the adjoining diaphragm sections.
Abstract:
A vertical microelectronic component includes a semiconductor substrate having a front side and a back side, and a multiplicity of fins formed on the front side. Each fin has a side wall and an upper side and is separated from other fins by trenches. Each fin includes a GaN/AlGaN heterolayer region formed on the side wall and including a channel region extending essentially parallel to the side wall. Each fin includes a gate terminal region arranged above the GaN/AlGaN heterolayer region and electrically insulated from the channel region in the associated trench on the side wall. A common source terminal region arranged above the fins is connected to a first end of the channel region in a vicinity of the upper sides. A common drain terminal region arranged above the back side is connected to a second end of the channel region in a vicinity of the front side.