acoustotreams 0.2.18

A Python package for acoustic wave scattering based on the T-matrix method

acoustotreams

The package acoustotreams adopts the framework of the treams package for acoustic wave scattering in finite and periodic arrangements of particles, based on the T-matrix method.

Installation

The version of Python should be 3.10 or 3.11.

Installation using pip

To install the package with pip, use

pip install acoustotreams

Preliminarily, you have to also install original treams>0.4 as well as numpy and scipy<1.17

pip install treams

Documentation

The documentation can be found at https://NikUstimenko.github.io/acoustotreams.

Publications

When using this code please cite:

The following publications document the developments and methods for different parts of the code:

• N. Ustimenko, I. Fernandez-Corbaton, and C. Rockstuhl, Singular value decomposition to describe bound states in the continuum in periodic metasurfaces, arXiv 2602.15741 (2026).
• O. Demeulenaere, N. Ustimenko, A. G. Athanassiadis, L. Gulati, C. Rockstuhl, and P. Fischer, Ultrasonic metamaterial at MHz frequencies using microstructured glass, arXiv 2512.20506 (2026).
• N. Ustimenko, A. B. Evlyukhin, V. Kyrimi, A. V. Kildishev, and C. Rockstuhl, Lattice-induced sound trapping in biperiodic metasurfaces of acoustic resonators, Phys. Rev. Res. 8, 013074 (2026).
• N. Ustimenko, C. Rockstuhl, and A. V. Kildishev, Optimal multipole center for subwavelength acoustic scatterers, Appl. Phys. Lett. 126, 142201 (2025).

Features

• T-matrix calculations using a spherical or cylindrical wave basis set
• Scattering from clusters of particles
• Scattering from particles and clusters arranged in 3d-, 2d-, and 1d-lattices
• Calculation of sound propagation in stratified media
• Band calculation in crystal structures