Page 17: Research news on Acoustics

Acoustics, as a research area, is the scientific study of generation, propagation, interaction, and detection of mechanical waves in gases, liquids, and solids across audible, infrasonic, and ultrasonic frequency ranges. It encompasses theoretical and experimental analysis of wave equations, sound fields, impedance, reflection, refraction, scattering, absorption, and nonlinear effects in complex media and structures. Subfields include physical acoustics, architectural acoustics, aeroacoustics, underwater and ocean acoustics, ultrasonics, vibroacoustics, and acoustical signal processing. Research in acoustics underpins technologies for imaging, nondestructive evaluation, noise control, transducer design, acoustic metamaterials, and advanced measurement techniques for characterizing materials, devices, and environments using sound.

Metalens expands its reach from light to sound

Researchers at Pohang University of Science and Technology (POSTECH) have achieved a breakthrough in surpassing the limitations of traditional acoustic metalenses. They have successfully developed the first wide field-of-hearing ...

Understanding flow and sound through large-scale computations

In a research collaboration between the group of Professor Hiroshi Yokoyama of the Department of Mechanical Engineering and KOBE STEEL, LTD., flow, and acoustic fields in an expanding pipe with orifice plates were studied ...

New topological metamaterial amplifies sound waves exponentially

Researchers at AMOLF, in collaboration with partners from Germany, Switzerland, and Austria, have realized a new type of metamaterial through which sound waves flow in an unprecedented fashion. It provides a novel form of ...

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