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Micromachines
Special Issues
Surface and Bulk Acoustic Wave Devices, 2nd Edition
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Surface and Bulk Acoustic Wave Devices, 2nd Edition

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A：Physics".

Deadline for manuscript submissions: 31 March 2026 | Viewed by 316

Special Issue Editors

Dr. Jinkai Chen

E-Mail Website
Guest Editor
Ministry of Education Key Laboratory of RF Circuits and Systems, College of Electronics & Information, Hangzhou Dianzi University, Hangzhou 310000, China
Interests: self-powered/passive sensing systems; wireless sensing; surface acoustic wave devices; tribotronics
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Shurong Dong

E-Mail Website
Guest Editor
College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China
Interests: resonators; SAW; BAW; wearable/implantable electronics
Special Issues, Collections and Topics in MDPI journals
Dr. Hao Jin

E-Mail Website
Guest Editor
College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China
Interests: resonators; SAW; FBAR; passive wireless sensing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Surface Acoustic Wave (SAW) and Bulk Acoustic Wave (BAW) devices are pivotal in various applications in the fields of telecommunications, consumer electronics, and sensor systems. These devices capitalize on acoustic waves to provide solutions for signal processing, sensing, and actuation at the microscale level. In this Special Issue, we aim to showcase cutting-edge research that highlights the development, optimization, and application of SAW and BAW devices. Contributions may cover a range of topics including, but not limited to, novel fabrication techniques, material innovations, theoretical modeling, and application-driven studies of these devices in new and existing fields. We invite researchers and practitioners to share their insights and findings that contribute to pushing the boundaries of what is possible with acoustic wave technology.

Dr. Jinkai Chen
Prof. Dr. Shurong Dong
Dr. Hao Jin
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • acoustic wave sensors
  • piezoelectric materials
  • signal processing
  • fabrication techniques
  • material innovations
  • device optimization
  • theoretical modeling

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Published Papers (1 paper)

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Research

16 pages, 3174 KiB  
Article
Efficient Particle Aggregation Through SSAW Phase Modulation
by Yiming Li, Zekai Li, Zuozhi Wei, Yiran Wang, Xudong Niu and Dongfang Liang
Micromachines 2025, 16(8), 910; https://doi.org/10.3390/mi16080910 - 5 Aug 2025
Viewed by 240
Abstract
In recent years, various devices utilizing surface acoustic waves (SAW) have emerged as powerful tools for manipulating particles and fluids in microchannels. Although they demonstrate a wide range of functionalities across diverse applications, existing devices still face limitations in flexibility, manipulation efficiency, and [...] Read more.
In recent years, various devices utilizing surface acoustic waves (SAW) have emerged as powerful tools for manipulating particles and fluids in microchannels. Although they demonstrate a wide range of functionalities across diverse applications, existing devices still face limitations in flexibility, manipulation efficiency, and spatial resolution. In this study, we developed a dual-sided standing surface acoustic wave (SSAW) device that simultaneously excites acoustic waves through two piezoelectric substrates positioned at the top and bottom of a microchannel. By fully exploiting the degrees of freedom offered by two pairs of interdigital transducers (IDTs) on each substrate, the system enables highly flexible control of microparticles. To explore its capability on particle aggregation, we developed a two-dimensional numerical model to investigate the influence of the SAW phase modulation on the established acoustic fields within the microchannel. Single-particle motion was first examined under the influence of the phase-modulated acoustic fields to form a reference for identifying effective phase modulation strategies. Key parameters, such as the phase changes and the duration of each phase modulation step, were determined to maximize the lateral motion while minimizing undesired vertical motion of the particle. Our dual-sided SSAW configuration, combined with novel dynamic phase modulation strategy, leads to rapid and precise aggregation of microparticles towards a single focal point. This study sheds new light on the design of acoustofluidic devices for efficient spatiotemporal particle concentration. Full article
(This article belongs to the Special Issue Surface and Bulk Acoustic Wave Devices, 2nd Edition)
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