Recent Development and Perspectives of Optimization Design Methods for Piezoelectric Ultrasonic Transducers

Abstract

A piezoelectric ultrasonic transducer (PUT) is widely used in nondestructive testing, medical imaging, and particle manipulation, etc., and the performance of the PUT determines its functional performance and effectiveness in these applications. The optimization design method of a PUT is very important for the fabrication of a high-performance PUT. In this paper, traditional and efficient optimization design methods for a PUT are presented. The traditional optimization design methods are mainly based on an analytical model, an equivalent circuit model, or a finite element model and the design parameters are adjusted by a trial-and-error method, which relies on the experience of experts and has a relatively low efficiency. Recently, by combining intelligent optimization algorithms, efficient optimization design methods for a PUT have been developed based on a traditional model or a data-driven model, which can effectively improve the design efficiency of a PUT and reduce its development cycle and cost. The advantages and disadvantages of the presented methods are compared and discussed. Finally, the optimization design methods for PUT are concluded, and their future perspectives are discussed.

Organic–Inorganic Hybrid Perovskite Materials for Ultrasonic Transducer in Medical Diagnosis

“…Especially, we focused on current device research and application progress of piezoelectric materials in the medical field. Owing to the sensitive piezoelectric or ferroelectric properties, we further summarized the current research on perovskite piezoelectricity, and further designed and proposed its future applications in the field of ultrasound, especially the huge application prospects of ultrasound medicine applications, such as biological and chemical sensors, high-intensity focused ultrasound for medical therapeutics, blood flow rate measurement, and ultrasound imaging [40][41][42][43][44][45][46].…”

A high-power ultrasonic transducer operated in MHz range by circular plate bending mode using a single parabolic reflector

“…[8][9][10][11][12][13][14] The ultrasonic transducer designs has been studied as a source for exciting ultrasonic waves [15][16][17] and the Langevin transducer, that is the most widely used ultrasonic transducer, has undergone comprehensive development. 18,19) Even with superior ultrasonic output power of this transducer, a single operating frequency typically below 100 kHz is possible in general. With the advancement of sonochemistry and biology, ultrasonic waves are emerging as a crucial tool, showing the unique advantages, [20][21][22] which require the precise control on a microscale (less than tens of μm) and substantial acoustic output (several MPa).…”

Sonopiezoelectric Nanomedicine and Materdicine

“…Piezoelectric effect, a phenomenon that certain dielectric generates electronic polarization when it deforms under mechanical stress (direct piezoelectricity), or, conversely, dielectric deforms when an electric field is applied along the polarization direction (converse piezoelectricity). [ 1 ] It endows piezoelectric material a bridge connection function between the mechanical stress and electrical energy. [ 2 ] Sonopiezoelectric effect, which refers specifically to the piezoelectric effect activated by the mechanical stress originated from ultrasound (US), appears in inorganic and organic nanomaterials represented by ZnO, [ 3 ] BaTiO 3 (BTO), [ 4 ] and polyvinylidene difluoride (PVDF).…”