A finite-element model is presented for numerical simulation in three dimensions of acoustophoresis suspended microparticles a microchannel embedded polymer chip and driven by an attached piezoelectric transducer at MHz frequencies. In accordance with the recently introduced principle whole-system ultrasound resonances, optimal resonance mode identified that related to acoustic combined transdu...

This paper presents an accurate method to calculate the P-matrix of an arbitrary transducer on an arbitrary substrate material. The approach is based on the COM model, and COM-parameters (transduction, reflectivity, capacitance and velocity) are calculated for each individual cell of the transducer in a manner such that the influence of the neighboring cells is taken into account. This method i...

Complete sets of elastic, piezoelectric, dielectric, and electromechanical properties of [001]c and [011]c poled pure and 0.5 wt. % manganese-doped 0.24Pb(In1/2Nb1/2)O3-0.47Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 single crystals have been characterized at room temperature. The results indicate that manganese ion substitution in the B-site of perovskite 0.24PIN-0.47PMN-0.29PT single crystals makes the mater...

We present a high bandwidth piezoelectric-actuated mirror for length stabilization of an optical cavity. The actuator displays a transfer function with a flat amplitude response and greater than 135 masculine phase margin up to 200 kHz, allowing a 180 kHz unity gain frequency to be achieved in a closed servo loop. To the best of our knowledge, this actuator has achieved the largest servo bandwi...

This paper presents the design and implementation of a rectifier for piezoelectric energy harvesting based on the parallel-synchronized-switch harvesting-on-inductor (P-SSHI) technique, also known as bias flip circuit[1]. The circuit is implemented with 0.25 μm CMOS high voltage process with only 0.9648 mm chip area. Post-layout simulation of the circuit shows the circuit extracts 336% more pow...

In this paper we describe an implementation and modeling of a novel fatigue monitoring sensor based on integration of piezoelectric transduction with floating gate avalanche injection. The miniaturized sensor enables continuous battery-less monitoring and failure predictions of biomechanical implants. Measured results from a fabricated prototype in a 0.5μm CMOS process demonstrate excellent agr...