Results 321 to 330 of about 4,826,619 (381)

Acoustic Metasurface for Space‐time Reflection Manipulation

open access: yesAdvanced Science, EarlyView.
This article introduces a novel space‐time acoustic metasurface (STAM) to overcome the limitations of bulky structures in sound modulation. Using a programmable piezoelectric array, the STAM precisely controls waterborne acoustic waves through spatiotemporal phase modulation.
Yunhan Yang   +6 more
wiley   +1 more source

Enhanced Band‐Crystal Engineering Drives Superior Power Generation in GeTe

open access: yesAdvanced Science, EarlyView.
By precisely tuning the band structure and crystal structure in GeTe‐based thermoelectric (TE) materials, this study achieves comprehensive control over electron transport and phonon scattering. Structural optimization significantly enhances carrier‐weighted mobility (µw) while effectively suppressing lattice thermal conductivity (κL), resulting in a ...
Xiaobo Tan   +10 more
wiley   +1 more source

Decoupling Ultralow Coherent and Particle‐Like Phonon Transport via Bonding Hierarchy in Soft Superionic Crystals

open access: yesAdvanced Science, EarlyView.
The bonding hierarchy in X6Re6S8I8 (X = Rb, Cs) promotes phonon localization, generating extensive discrete phonon flat bands that redefine the lower bounds of lattice thermal conductivity in crystals. Abstract Within the unified theoretical framework for thermal transport, the inherent interplay between coherent tunneling and propagative phonon ...
Wenjie Xiong   +6 more
wiley   +1 more source

High Conversion Efficiency in Intrinsic High Power‐Density Mg2Sn‐GeTe Thermoelectric Generator

open access: yesAdvanced Science, EarlyView.
First Mg2Sn–GeTe thermoelectric generator achieves 9% efficiency by strategically modulating power factor–thermal conductivity interplay in intrinsically high‐power‐density system. Abstract Thermoelectric generators (TEGs) offer a sustainable solution for thermal energy harvesting, where maximizing energy output necessitates achieving both high power ...
Xinzhi Wu   +6 more
wiley   +1 more source

At-Sea Measurement of the Effect of Ship Noise on Mussel Behaviour. [PDF]

open access: yesSensors (Basel)
Torres-Guijarro S   +4 more
europepmc   +1 more source

Realization of Spin‐locked Acoustic Helical Landau Levels in both Hexagonal and Square Lattices

open access: yesAdvanced Science, EarlyView.
Acoustic helical Landau levels rooted in quantum spin Hall systems are achieved by linearly increasing the local bandgap through the lifting of the double Dirac cone in acoustic crystals. Large‐area conveyance of acoustic energy facilitated by these helical Landau levels is demonstrated.
Yafeng Chen   +5 more
wiley   +1 more source

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