Underwater gradient metalens for broadband subwavelength focusing

Z Ren, HW Dong, X He, M Chen, D Fang - International Journal of …, 2022 - Elsevier
Broadband effectiveness and impedance mismatching in fluid-structure coupling remain
significant obstacles in the pursuit of broadband high-efficient high-symmetrical …

An acoustic cloaking design based on topology optimization

Z Yang, X Huang - The Journal of the Acoustical Society of America, 2022 - pubs.aip.org
In this work, we explain how to utilize the topology optimization method for the design of
acoustic cloaks based on the principle of scattering cancellation. To take account of the …

Design and optimization of three-dimensional composite multilayer cylindrical pentamode metamaterials for controlling low frequency acoustic waves

C Cai, X Wang, Q Wang, M Li, G He, Z Wang, Y Qin - Scientific Reports, 2022 - nature.com
For three-dimensional pentamode metamaterials, it is of great significance to realize
underwater low frequency acoustic wave control. Therefore, in order to compare with …

Elastic temporal waveguiding

J Santini, E Riva - New Journal of Physics, 2023 - iopscience.iop.org
We provide a theoretical framework to mold time-modulated mechanical metamaterials with
frequency conversion and wave-steering capabilities. To illustrate the concept, we initially …

Design of arbitrarily shaped acoustic cloaks through partial differential equation-constrained optimization satisfying sonic-metamaterial design requirements

S Cominelli, DE Quadrelli… - Proceedings of the …, 2022 - royalsocietypublishing.org
We develop an optimization framework for the design of acoustic cloaks, with the aim of
overcoming the limitations of usual transformation-based cloaks in terms of microstructure …

Parametric analysis and multi-objective optimization of pentamode metamaterial

Z Zou, F Xu, Y Pan, X Niu, T Fang, C Zeng - Sustainability, 2023 - mdpi.com
Pentamode metamaterial (PM) has enormous application potential in the design of
lightweight bodies with superior vibration and noise-reduction performance. To offer …

[HTML][HTML] High bulk modulus pentamodes: The three-dimensional metal water

G Brambilla, S Cominelli, M Verbicaro… - Extreme Mechanics …, 2025 - Elsevier
Despite significant advances in the field of phononic crystals, the development of acoustic
metafluids that replicate the behaviour of liquids in three dimensions remains elusive. For …

[HTML][HTML] CVAE-based inverse design of two-dimensional honeycomb pentamode metastructure for acoustic cloaking

G Li, L Tang, V Sorokin, S Wang - Thin-Walled Structures, 2025 - Elsevier
In this work, a method for inverse design of two-dimensional honeycomb pentamode
metastructures (HPM) based on the Conditional Variational Auto-Encoder (CVAE) is …

Switchable acoustic metagrating for three-channel retroreflection and carpet cloaking

A Song, C Sun, Y Xiang, FZ Xuan - Applied Physics Express, 2022 - iopscience.iop.org
In this paper, we propose a switchable acoustic metagrating composed of periodic grooves
for realizing switchable functionalities of three-channel retroreflection and carpet cloaking …

Pentamode Structures Optimized by Machine Learning with Adaptive Sampling

S Bronder, A Jung - Advanced Engineering Materials, 2024 - Wiley Online Library
Pentamode structures, gain increasing interest as insulation or stealth material. The
enhancements in computers and clusters make it possible to investigate those structures not …