About this Research Topic
Acoustic and mechanical waves significantly influence the developments of industrial engineering, biomedical, and our daily life. The special manipulation of acoustic and mechanical waves is a fast-developing research topic which is crucial in expanding our wave-control capability and enriching unprecedented applications in a variety of fields. Acoustic and mechanical metamaterial/metasurface manifest themselves as the typical and useful implementation of the special wave control, which have vastly broadened the properties limit in natural materials.
The special manipulation of acoustic and mechanical waves can span from the control of the effective mass density, bulk module, refraction index, amplitude/phase, wavefront, resonance, coupling, and frequency conversion. The manipulation also includes the exploration of the unconventional physical properties of waves such as topological states, orbital and spin angular momentum. Developments in this field have provided novel approaches to conventional engineering challenges and also prompted a wide range of innovative applications, including the super-resolution imaging, high-efficient wave guiding, frequency filtering, acoustic cloaking or illusion, communication based on angular momentum, and biomedical ultrasound therapy.
This research topic focuses on the fundamental theory, methodology, and experimental investigation on the special manipulation of acoustic, mechanical waves and the novel applications based on the wave control. These may include but not limited to:
• Acoustic and mechanical metamaterial/metasurface;
• Twisted acoustic and acoustic angular momentum;
• Acoustic tweezers and devices for particle manipulation based on ultrasound;
• Acoustic communication;
• Microscale artificial structure for wave control;
• Special band structure control of phononic crystals;
• Sub-wavelength ultrasound focusing;
• Biomedical ultrasound imaging and therapy;
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.