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http://hdl.handle.net/10397/92960
Title: | Evolvable acoustic field generated by a transducer with 3D-printed Fresnel lens | Authors: | Wang, D Lin, P Chen, Z Fei, C Qiu, Z Chen, Q Sun, X Wu, Y Sun, L |
Issue Date: | Nov-2021 | Source: | Micromachines, Nov. 2021, v. 12, no. 11, 1315 | 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. | Keywords: | Evolvable acoustic field 3D printed Fresnel lens Finite element analysis Ultrasonic transducer |
Publisher: | Molecular Diversity Preservation International (MDPI) | Journal: | Micromachines | ISSN: | 2072-666X | DOI: | 10.3390/mi12111315 | Rights: | Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). The following publication Wang, D., Lin, P., Chen, Z., Fei, C., Qiu, Z., Chen, Q., ... & Sun, L. (2021). Evolvable Acoustic Field Generated by a Transducer with 3D-Printed Fresnel Lens. Micromachines, 12(11), 1315 is available at https://doi.org/10.3390/mi12111315 |
Appears in Collections: | Journal/Magazine Article |
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micromachines-12-01315-v2.pdf | 3.79 MB | Adobe PDF | View/Open |
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