[HTML][HTML] A graded metamaterial for broadband and high-capability piezoelectric energy harvesting
This work proposes a graded metamaterial-based energy harvester integrating the
piezoelectric energy harvesting function targeting low-frequency ambient vibrations (< 100 …
piezoelectric energy harvesting function targeting low-frequency ambient vibrations (< 100 …
[HTML][HTML] Periodically alternated elastic support induced topological phase transition in phononic crystal beam systems
Determining strong robustness in flexural wave propagation in beam systems has always
been a promising achievement with various real-life applications such as energy harvesting …
been a promising achievement with various real-life applications such as energy harvesting …
A perspective on elastic metastructures for energy harvesting
Rapid advances have been made in the properties of metastructures, including phononic
crystals, metamaterials, and metasurfaces, with respect to their robustness, high power …
crystals, metamaterials, and metasurfaces, with respect to their robustness, high power …
Reconfigurable elastic metamaterials: Engineering dispersion with beyond nearest neighbors
We design, simulate, and experimentally characterize a reconfigurable elastic metamaterial
with beyond-nearest-neighbor (BNN) coupling. The structure is composed from the popular …
with beyond-nearest-neighbor (BNN) coupling. The structure is composed from the popular …
[HTML][HTML] Reinforcement learning optimisation for graded metamaterial design using a physical-based constraint on the state representation and action space
The energy harvesting capability of a graded metamaterial is maximised via reinforcement
learning (RL) under realistic excitations at the microscale. The metamaterial consists of a …
learning (RL) under realistic excitations at the microscale. The metamaterial consists of a …
[HTML][HTML] Flexural-Mode Piezoelectric Resonators: Structure, Performance, and Emerging Applications in Physical Sensing Technology, Micropower Systems, and …
X Cai, Y Wang, Y Cao, W Yang, T Xia, W Li - Sensors, 2024 - mdpi.com
Piezoelectric material-based devices have garnered considerable attention from scientists
and engineers due to their unique physical characteristics, resulting in numerous intriguing …
and engineers due to their unique physical characteristics, resulting in numerous intriguing …
New topological rainbow trapping approach for phononic beam-foundation systems
Rainbow trapping is of great significance for frequency-based wave splitting and broadband
wave attenuation. By recognizing the deficiency of prevailing gradient rainbow reflection …
wave attenuation. By recognizing the deficiency of prevailing gradient rainbow reflection …
[HTML][HTML] Roton-like dispersion via polarisation change for elastic wave energy control in graded delay-lines
While roton dispersion relations had been restricted to correlated quantum systems at low
temperature, recent works show the possibility of obtaining this unusual dispersion in …
temperature, recent works show the possibility of obtaining this unusual dispersion in …
[HTML][HTML] Adiabatic limit for scattering-free waveguiding in space-graded arrays of micro-resonators
We report on the dynamics of graded metamaterials in the context of micro-
electromechanical systems (MEMS). Graded metamaterials are known to exhibit space …
electromechanical systems (MEMS). Graded metamaterials are known to exhibit space …
Bandgap widening and resonator mass reduction through wave locking
Elastic metamaterials made of locally resonant arrays have been developed as effective
ways to create band gaps for elastic or acoustic travelling waves. They work by …
ways to create band gaps for elastic or acoustic travelling waves. They work by …