Results 61 to 70 of about 5,639 (310)
State of the Art in Crystallization of LiNbO3 and Their Applications
Molecules, 2021 Lithium niobate (LiNbO3) crystals are important dielectric and ferroelectric materials, which are widely used in acoustics, optic, and optoelectrical devices.
Kunfeng Chen +3 more
doaj +1 more source
Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method
Advanced Engineering Materials, EarlyView.A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
wiley +1 more source
Canonical Acoustics and Its Application to Surface Acoustic Wave on Acoustic Metamaterials [PDF]
, 2016 In a conventional formalism of acoustics, acoustic pressure p and velocity field u are used for characterizing acoustic waves propagating inside elastic/acoustic materials.
Shen, Jian Qi,
core +1 more source
Nonclassical Nonlinear Acoustics in Solids: Methods, Applications, and the State of the Art [PDF]
AIP Conference Proceedings, 2006 We outline the area of “nonclassical” nonlinear acoustics that deals with media exhibiting anomalously strong elastic nonlinearity, including hysteresis, conditioning, and slow dynamics. The entire range of behaviors we term nonlinear, nonlinear, nonequilibrium dynamics (NND).
openaire +1 more source
Advanced Engineering Materials, EarlyView.This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari +4 more
wiley +1 more source
Nature Communications, 2018 Photonic structures can be used to simulate fundamental physical phenomena like the optical analog of gravity. Here, the authors use metasurface-engineered waveguides to emulate the optical effects of a topological defect on space-time.
Chong Sheng +3 more
doaj +1 more source
Probing nanoscale spatial distribution of plasmonically excited hot carriers
Nature Communications, 2020 Revealing the spatial distribution of hot carriers in real space is crucial to their efficient utilization. Here, the authors show that in-situ electrochemical tip-enhanced Raman spectroscopy is able to resolve the spatial distribution of reactive hot ...
Sheng-Chao Huang +9 more
doaj +1 more source
Low-Frequency, Open, Sound-Insulation Barrier by Two Oppositely Oriented Helmholtz Resonators
Micromachines, 2021 In this work, a low-frequency, open, sound-insulation barrier, composed of a single layer of periodic subwavelength units (with a thickness of λ/28), is demonstrated both numerically and experimentally.
Yi-Jun Guan +4 more
doaj +1 more source
Demonstrating Vibrational Current Generation With a Self‐Assembled Bioelectret
Advanced Functional Materials, EarlyView.Vacuum‐deposited films of the plant‐derived molecule, Baicalein, form a self‐assembled bioelectret exhibiting spontaneous orientation polarization and a giant surface potential. The films induce alternating current during the vibration of a movable electrode without charging treatments. Hydrocarbon protection enhances the air stability of the Baicalein
Kouki Akaike +7 more
wiley +1 more source
Low-Frequency Low-Reflection Bidirectional Sound Insulation Tunnel with Ultrathin Lossy Metasurfaces
Applied Sciences, 2022 We report both numerical and experimental constructions of a tunnel structure with low-frequency low-reflection bidirectional sound insulation (BSI). The designed tunnel was constructed from a pair of lossy acoustic metasurfaces (AMs), which consists of ...
Yi-Jun Guan +5 more
doaj +1 more source