Acoustic Transducers and Their Applications, 2nd Edition

Dear Colleagues,

Acoustics represent a key form of mechanical energy that is exerted everywhere in our world. It aid in sensing, actuating, and communicating, even in medical or industrial matters. With a broad operating spectrum, it is the most pivotal tool in various implementations, ranging from airborne applications to studies through different media, especially for needs beyond the physical limitations of other mechanisms (e.g., optical or electromagnetic waves). Alongside the progression of advanced transducer technology, more acoustic device alternatives have been optimized for conventional applications. In addition, consistent research efforts in the field of developing transducers enable rapid paradigmatic shifts in many emerging acoustic applications, which coherently accelerate the development of other peripheral technologies, such as thin-film materials used in acoustic transducers, circuits for acoustic devices, modules, algorithms, system integration, and even the integration of acoustic sensors into smart systems. In order to promote research efforts and advocate for continuous innovation in this field, in this Special Issue, the current state of the art in the field of ‘acoustic transducers and their applications’ will be presented, covering a wide range of related topics, including, but not limited to, the following:

• New piezoelectric materials: ceramics, thin films, single crystals, polymers, composites, 2D materials, etc.;
• Acoustic transducers: acoustic sensors and actuators, circuits for acoustic devices, modules, algorithms, and integrated systems;
• Piezoelectric devices/acoustic transducers: fabrication, testing, characterization, design, modeling, simulation, manufacturing, 3D printing, packaging, and system integration;
• Acoustic transducer applications: nondestructive testing, acoustic arrays for holograms and beam steering, acoustic ranging, acoustic lenses, meta-materials and meta-surfaces, energy harvesting, medical imaging, wearable sensors, biomedical applications, virtual reality/augmented reality, and other emerging applications for the metaverse.

Dr. Songsong Zhang
Dr. Liang Lou
Dr. Qiaozhen Zhang
Dr. Xing Haw Marvin Tan
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 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.

• acoustic transducers and their design, simulation, testing, and characterization
• piezoelectric MEMS device
• thin-film piezoelectric materials and material properties
• MEMS integration process
• acoustic modules, algorithms, circuits, and systems
• acoustic lenses and meta-surfaces
• acoustic transducer arrays and their applications
• implementation and usage of acoustic devices for various applications

• Acoustic Transducers and Their Applications in Micromachines (15 articles)