Acoustic wave scattering: The deflection or redistribution of acoustic energy when a wave encounters a discontinuity or obstacle. Diffraction: The bending and spreading of waves around the edges ...

The diffraction limit is a fundamental constraint on using light or sound waves to image tiny objects. If the separation between two features is smaller than about half the wavelength of the light or ...

More information: Y. Nii et al, Observation of Nonreciprocal Diffraction of Surface Acoustic Wave, Physical Review Letters (2025). DOI: 10.1103/PhysRevLett.134.027001.

These bricks can be assembled into meta-surfaces to generate any diffraction-limited acoustic field. We apply this methodology to show experimental examples of acoustic focusing, steering and, after ...

Katz devised the method for surpassing the acoustic diffraction limit in collaboration with Emmanuel Bossy, now at Université Grenoble Alpes in Grenoble, France.

New acoustic wave phenomenon discovered Date: January 29, 2025 Source: Tohoku University Summary: This novel finding regarding the nonreciprocal diffraction of acoustic waves could open doors for ...

It breaks the acoustic diffraction limit by localizing the centers of single dyed droplets flowing in blood vessels. This technique resolves brain blood vessels at a six-fold finer resolution.