Development of Lamb Wave-Based Unidirectional Transducers Toward Highly Efficient Microfluidic Applications.

Acoustic wave devices have great potential for integration with lab-on-chip highly efficient microfluidics. This article investigates Lamb wave-based unidirectional transducers for application in acoustic wave-driven microfluidic devices with high efficiency. The simulation of the unidirectional transducer is performed via the finite element analysis.

Design and Implementation of 2.45 GHz Passive SAW Temperature Sensors with BPSK Coded RFID Configuration.

A surface acoustic wave based passive temperature sensor capable of multiple access is investigated. Binary Phase Shift Keying (BPSK) codes of eight chips were implemented using a reflective delay line scheme on a Y-Z LiNbO₃ piezoelectric substrate. An accurate simulation based on the combined finite- and boundary element method (FEM/BEM) was performed in order to determine the optimum design parameters.

P Matrix Analysis of Surface Acoustic Waves in Piezoelectric Phononic Crystals.

Large time/memory costs have constituted a significant obstacle for accurately analyzing surface acoustic waves (SAWs) in large size two-dimensional (2-D) piezoelectric phononic crystals (PnCs). To overcome this obstacle, this study introduces the unit P matrix and its associated cascading. To obtain an accurate unit P matrix, the Y parameters of the SAW delay lines were derived using a three-dimensional (3-D) finite element model (FEM) with and without 2-D piezoelectric PnCs, respectively, on the transmitting path.