Topological pumping in origami metamaterials

S Li, PG Kevrekidis, X Mao, J Yang - Physical Review B, 2024 - APS
We present a mechanism of topological pumping in origami metamaterials with spatial
modulation by tuning the rotation angles. Through coupling spatially modulated origami …

Observation of hybrid-order topological pump in a Kekulé-textured graphene lattice

T Xia, Y Li, Q Zhang, X Fan, M Xiao, C Qiu - Physical Review B, 2023 - APS
The Thouless charge pumping protocol provides an effective route for realizing topological
particle transport. To date, the first-order and higher-order topological pumps, exhibiting …

Elastic energy and polarization transport through spatial modulation

W Cheng, H Zhang, Y Wei, K Wang, G Hu - … of the Mechanics and Physics of …, 2024 - Elsevier
Thouless pumping, a specific type of quantum Hall effect, enables topological transport of
energy through internal pathways by modulating adiabatically the Hamiltonian of a system …

Differences between quantum and classical adiabatic evolution

C Bösch, A Fichtner, M Serra-Garcia - Physical Review B, 2024 - APS
Adiabatic evolution is an emergent design principle for time modulated metamaterials, often
inspired by insights from topological quantum computing such as braiding operations …

Classifying the dynamics of architected materials by groupoid methods

B Mesland, E Prodan - Journal of Geometry and Physics, 2024 - Elsevier
We consider synthetic materials consisting of self-coupled identical resonators carrying
classical internal degrees of freedom. The architecture of such material is specified by the …

Bio-inspired branch structure seismic metamaterial: attenuating low-frequency Rayleigh waves

Y Bai, X Li, Y Liao - Journal of Physics D: Applied Physics, 2023 - iopscience.iop.org
This study investigates the transmission characteristics of natural forests with branches and
introduces a bio-inspired branch structure seismic metamaterial (SM) designed to create …

Understanding of topological mode and skin mode morphing in 1D and 2D non-Hermitian resonance-based meta-lattices

Q Wu, S Wang, H Qian, Y Wang, G Huang - Journal of the Mechanics and …, 2024 - Elsevier
Recent advances have demonstrated that the non-Hermitian skin effect (NHSE), induced by
system non-Hermiticity, can manipulate the localization of in-gap topological edge modes …

Elastic birefringent metamaterials and quarter-wave plate

Y Wei, M Cai, G Hu - International Journal of Mechanical Sciences, 2024 - Elsevier
The elastic matrices of extremal metamaterials have one or more zero eigenvalues, allowing
energy-free deformation modes. These elastic metamaterials can be well approximated by …

The Imaginary Universe

S Łukaszyk - 2023 - preprints.org
Maxwell's equations in vacuum provide the negative speed of light-c, which leads to
imaginary Planck units. However, the second, negative fine-structure constant $\alpha_2 …

Topological pumping in acoustic Fock lattices

Z Guan, H Liu, R Zheng, J Liang, M Ke, J Lu, W Deng… - Physical Review …, 2024 - APS
Topological pumping, as an efficient form of energy transfer protected by nontrivial topology,
has been intensively studied in condensed matter physics and optics. Conventional …