Evolvable acoustic field generated by a transducer with 3D-printed fresnel lens

Danfeng Wang, Pengfei Lin, Zeyu Chen, Chunlong Fei, Zhihai Qiu, Qiang Chen, Xinhao Sun, Yan Wu, Lei Sun

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

Evolvable acoustic fields are considered an effective method for solving technical prob-lems related to fields such as biological imaging, particle manipulation, drug therapy and interven-tion. However, because of technical difficulties and the limited technology available for realizing flexible adjustments of sound fields, few studies have reported on this aspect in recent years. Herein, we propose a novel solution, using a Fresnel lens-focused ultrasonic transducer for generating ex-cited-signal-dependent acoustic pressure patterns. Finite element analysis (FEA) is used to predict the performance of a transducer with a Fresnel lens. The Fresnel lens is printed using 3D additive manufacturing. Normalized intensity maps of the acoustic pressure fields are characterized from the Fresnel lens-focused transducer under various numbers of excited-signal cycles. The results demonstrate that under different cycle excitations, a temporal evolution acoustic intensity can be generated and regulated by an ultrasound transducer with a 3D Fresnel lens. This acoustical pattern control method is not only simple to realize but also has considerable application prospects.

Original languageEnglish
Article number1315
JournalMicromachines
Volume12
Issue number11
DOIs
Publication statusPublished - 26 Oct 2021

Keywords

  • 3D printed Fresnel lens
  • Evolvable acoustic field
  • Finite element analysis
  • Ultrasonic transducer

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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