Cornell University

Benyamin Davaji

Amit Lal

Debdeep Jena

Ved Gund

Grace Huili Xing

Sachin Nadig

Sahil Gupta

Visarute Pinrod

Shubham Jadhav

Disclosed are ferroelectric devices including devices for performing a multiplication of analog input signals and resonators. In one aspect, a ferroelectric nanoelectromechanical device includes a first structural beam, a first input electrode disposed on a first top portion of the first structural beam, and an output electrode. The apparatus further includes a first ferroelectric film disposed on a second top portion of the first input electrode, and a first resistive layer disposed on a third top portion of the first ferroelectric film, wherein a first electrode is positioned at a first end of the first resistive layer and a second electrode is positioned at a second end of the first resistive layer.

Resistive electrodes on ferroelectric devices for linear piezoelectric programming

A rotation sensor, including: (i) a substrate having a top surface and an interior bottom surface; (ii) an electrode module positioned on the top surface of the substrate and including a first set of electrodes configured to generate a bulk acoustic wave directly into the substrate, wherein at least a portion of the bulk acoustic wave is transduced into a shear wave upon reflection on the interior bottom surface of the substrate without use of a reflector, and a second set of electrodes configured to detect the shear wave; and (iii) a controller in communication with the first set and second set of electrodes and configured to determine, based on the detected shear wave, an effect of Coriolis force on the sensor.

Shear wave methods, systems, and gyroscope

A vibration transducer module for detecting a vibratory signal, comprising a base, a spring connected to the base at a first location, a mass mechanically coupled to the spring at a second location remote from the first location, and a wall configured to position a first wall electrode and a second wall electrode a selected distance from the first location, the conductive element positioned and sized to contact the first wall electrode and the second wall electrode. The mass comprises a conductive element, and an energy harvester to provide a first voltage signal. The energy harvester may comprise a piezoelectric material or be construct as a SAW device. The module may be combined with a rectifier and an oscillator to form a vibration sensor.

Energy harvesting apparatus and methods for detecting a vibratory signal

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Ithaca, NY, United States of America

Benyamin Davaji