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 language | English |
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Article number | 1315 |
Journal | Micromachines |
Volume | 12 |
Issue number | 11 |
DOIs | |
Publication status | Published - 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