Abstract:
An electromechanical transducer of the present invention includes a first electrode, a vibrating membrane formed above the first electrode through a gap, a second electrode formed on the vibrating membrane, and an insulating protective layer formed on a surface of the second electrode side. A region where the protective layer is not formed is present on at least part of a surface of the vibrating membrane.
Abstract:
An electronic device includes a substrate, a cavity part formed above the substrate with a functional device placed therein, a coating structure that defines the cavity part, and the coating structure has a first surrounding wall formed around the cavity part above the substrate, a second surrounding wall formed around the cavity part above the first surrounding wall, a coating layer that defines an upper surface of the cavity part, wherein the second surrounding wall is located inside the first surrounding wall in a plan view.
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:
An electronic device includes a substrate, a cavity part formed above the substrate with a functional device placed therein, a coating structure that defines the cavity part, and the coating structure has a first surrounding wall formed around the cavity part above the substrate, a second surrounding wall formed around the cavity part above the first surrounding wall, a coating layer that defines an upper surface of the cavity part, wherein the second surrounding wall is located inside the first surrounding wall in a plan view.
Abstract:
An apparatus for converting mechanical vibrational energy into electrical power includes first and second collecting electrodes configured for connection to terminals of an electrical load, and an electret placed facing the first electrode. The electret is mounted so as to move relative to the first electrode in one degree-of-freedom in a plane. Relative movement between the electret and the first electrode induces a potential difference across the electrodes. The electret has a continuous layer and a series of protrusions, each of which extends perpendicular to the plane. These protrusions are distributed in the degree-of-freedom with a first pitch, which is smaller than the travel between the first electrode and the electret. The first electrode has faces facing the electret. These faces are distributed in the degree-of-freedom with a second pitch identical to the first pitch.
Abstract:
An electromechanical transducer of the present invention includes a first electrode, a vibrating membrane formed above the first electrode through a gap, a second electrode formed on the vibrating membrane, and an insulating protective layer formed on a surface of the second electrode side. A region where the protective layer is not formed is present on at least part of a surface of the vibrating membrane.
Abstract:
A physical quantity sensor includes a sensor portion, a casing, and a vibration isolator. The casing includes a supporting portion with a supporting surface that is located to face an end surface of the sensor portion. The vibration isolator is located between the end surface of the sensor portion and the supporting surface of the casing to join the sensor portion to the casing. The vibration isolator reduces a relative vibration between the sensor portion and the casing.
Abstract:
A micro-electromechanical system (1) comprising: a sensor device (2), with a measuring deformer (3) exhibiting an effective temperature T1; a high-frequency resonator (4) that is mechanically coupled to the sensor device (2) and can interact with the measuring deformer (3); an energy converter (7) that is operatively connected to the high-frequency resonator (4) and is configured to excite the high-frequency resonator (4) into a vibration state, wherein, through the interaction of the vibrating high-frequency resonator (4) with the measuring deformer (3), energy can be transferred from the measuring deformer (3) to the high-frequency resonator (4) in such a manner that the measuring deformer (3) after the energy transfer exhibits an effective temperature T2 lower than T1.
Abstract:
Techniques, systems, and devices are described for implementing for implementing computation devices and artificial neurons based on nanoelectromechanical (NEMS) systems. In one aspect, a nanoelectromechanical system (NEMS) based computing element includes: a substrate; two electrodes configured as a first beam structure and a second beam structure positioned in close proximity with each other without contact, wherein the first beam structure is fixed to the substrate and the second beam structure is attached to the substrate while being free to bend under electrostatic force. The first beam structure is kept at a constant voltage while the other voltage varies based on an input signal applied to the NEMS based computing element.
Abstract:
An integrated device includes a MEMS device, such as a gyroscope, having a movable mass spaced apart from a substrate, the movable mass being configured to oscillate in a drive direction relative to the substrate. The integrated device further comprises an integrated circuit (IC) die having a surface coupled with the MEMS device such that the movable mass is interposed between the substrate and the surface of the IC die. An electrode structure is formed on the surface of the IC die, the electrode structure including a plurality of electrode segments vertically spaced apart from the movable mass. Openings extend through the movable mass and the electrode segments overlie the openings. Suitably selected electrode segments can be activated to electrostatically attract the movable mass toward sense electrodes vertically spaced apart from the MEMS to reduce quadrature motion of the movable mass.