Reinforcement learning applied to metamaterial design

T Shah, L Zhuo, P Lai, D La Rosa-Moreno… - The Journal of the …, 2021 - pubs.aip.org
This paper presents a semi-analytical method of suppressing acoustic scattering using
reinforcement learning (RL) algorithms. We give a RL agent control over design parameters …

Anomalous mode-converting reflection of elastic waves using strip-type metagratings

SY Kim, YB Oh, JS Lee, YY Kim - Mechanical Systems and Signal …, 2023 - Elsevier
Metasurfaces have recently received much attentions for manipulating waves. However, it is
difficult to control all high-order or diffracted modes using the popularly employed …

Conditional Wasserstein generative adversarial networks applied to acoustic metamaterial design

P Lai, F Amirkulova, P Gerstoft - The Journal of the Acoustical Society …, 2021 - pubs.aip.org
This work presents a method for the reduction of the total scattering cross section (TSCS) for
a planar configuration of cylinders by means of generative modeling and deep learning …

Broadband acoustic metamaterial design via machine learning

T Tran, FA Amirkulova, E Khatami - Journal of Theoretical and …, 2022 - World Scientific
Acoustic metamaterials are engineered microstructures with special mechanical and
acoustic properties enabling exotic effects such as wave steering, focusing and cloaking. In …

Self-ordering of buckling, bending, and bumping beams

A Guerra, AC Slim, DP Holmes, O Kodio - Physical Review Letters, 2023 - APS
A collection of thin structures buckle, bend, and bump into each other when confined. This
contact can lead to the formation of patterns: hair will self-organize in curls; DNA strands will …

Near-perfect retroreflection of flexural waves via optimized elastic metagratings

YB Oh, SY Kim, SH Cho, JS Lee, YY Kim - International Journal of …, 2024 - Elsevier
The potential of elastic wave retroreflection is substantial for various applications such as
structural identification and detection. However, realizing accurate retroreflection presents …

[HTML][HTML] Edge modes for flexural waves in quasi-periodic linear arrays of scatterers

M Martí-Sabaté, D Torrent - APL Materials, 2021 - pubs.aip.org
We present a multiple scattering analysis of robust interface states for flexural waves in thin
elastic plates. We show that finite clusters of linear arrays of scatterers built on a quasi …

[HTML][HTML] Harmonic balance formulation for nonlinear wave-scattering clusters

JR Tempelman, KH Matlack, AF Vakakis - International Journal of Non …, 2024 - Elsevier
Nonlinear oscillators can be used as a scattering mechanism to passively manipulate
propagating elastic waves in an energy-dependent manner. However, the interaction of …

Inverse design of thin-plate elastic wave devices

JR Capers - Physical Review Applied, 2023 - APS
Motivated by recent advances in the inverse design of electromagnetic materials, we
develop two methods for manipulating flexural waves on thin elastic plates. First, we derive a …

Bound states in the continuum in circular clusters of scatterers

M Martí-Sabaté, B Djafari-Rouhani, D Torrent - Physical Review Research, 2023 - APS
In this work we study the localization of flexural waves in highly symmetric clusters of
scatterers. It is shown that when the scatterers are placed regularly in the perimeter of a …