Abstract:
Mechanically flexible and optically transparent thin film solid state supercapacitors are fabricated by assembling nano-engineered carbon electrodes in porous templates. The electrodes have textured graphitic surface films with a morphology of interconnected arrays of complex shapes and porosity. The graphitic films act as both electrode and current collector, and when integrated with solid polymer electrolyte function as thin film supercapacitors. The nanostructured electrode morphology and conformal electrolyte packaging provide enough energy and power density for electronic devices in addition to possessing excellent mechanical flexibility and optical transparency.
Abstract:
A method wherein a brake element (1) is sensorized by means of at least one piezoceramic sensor (15) arranged between a metallic support element (11) and a block (14) of friction material of a brake element, said sensor being completely embedded within the block of friction material; an electrical voltage signal (ST) generated by at least one piezoceramic sensor, without the need for an electrical power supply, is picked up by an electrical circuit (18) which is integrated into the metallic support element, and the electrical signal is processed in real time in the form of equal length of time samples per unit of time of the detected signal by successively processing in real time each sample of equal length of time sample of the signal by applying an algorithm selected from the group: a sequence of integrations of voltage values in the sample carried out in an interval of time in the order of milliseconds; FFT voltage data sample; integral of the voltage data sample.
Abstract:
A sensing assembly device (100) includes a substrate (102), a chamber above the substrate, a first piezoelectric gyroscope sensor (104) positioned within the chamber, and a first accelerometer (106) positioned within the chamber (150). The environment within the chamber (150) is selected to provide damping to the first accelerometer (106) without unduly affecting the quality factor of the piezoelectric gyroscope (104).
Abstract:
Es wird ein elektroakustisches Bauelement (EAC) angegeben, bei dem die störenden Beiträge unerwünschter Wellenmoden verringert sind. Dazu umfasst ein Bauelement (EAC) eine Piezolage (PL), eine Elektrodenlage (EL) und eine Trennlage (SL). Im Bauelement (EAC) sind eine Hauptmode und eine Nebenmode ausbreitungsfähig. Die Frequenz der Hauptmode f m und die Frequenz der Nebenmode f add weisen eine zueinander gegenläufige Abhängigkeit von der Dicke der Trennlage (SL) auf.
Abstract:
Die Erfindung betrifft eine Ultraschallsensorvorrichtung (1) für ein Kraftfahrzeug, mit einem Ultraschallsensor (2), welcher eine Membran (5) zum Aussenden und/oder Empfangen von Ultraschallwellen aufweist, und mit einer Versteifungseinheit (15) zum Anbringen an einem Verkleidungsteil (27) des Kraftfahrzeugs und zum Versteifen des Verkleidungsteils (27), wobei die Versteifungseinheit (15) eine Durchgangsöffnung (17) für die Membran (5) des Ultraschallsensors (2) aufweist, wobei die Versteifungseinheit (15) aus zumindest zwei separaten Versteifungsteilen (18 bis 21) zum Anbringen an dem Verkleidungsteil (27) gebildet ist.
Abstract:
The present invention provides electroactive polymer ("EAP") transducers having improved properties. This improvement is achieved without decreasing film thickness, or by using high dielectric constant and high field, so that this approach does not adversely affect the reliability and physical properties of the resultant dielectric films. Mobile electrically active additives are added to the electrode formulation which significantly improve the performance of electroactive polymer transducers. Such additives do not need to be ionic. These electrically active additives can enable higher performance devices, smaller devices using less active area, lower voltage/power operation, and combinations of these enhancements.