Results 151 to 160 of about 9,353,121 (336)

Giant Berry‐phase‐Driven X‐Ray Beam Translations in Strain‐Engineered Semiconductor Crystals

Advanced Materials, EarlyView.
Due to the Berry‐phase effect, X‐rays propagating in deformed crystals undergo large translations, interesting for X‐ray optics applications. Here, the lattice expansion observed upon H irradiation of dilute‐nitride semiconductors is exploited to engineer the deformation landscape of selectively hydrogenated GaAsN epilayers.
Marco Felici, Giorgio Pettinari, Michela Fratini, Luisa Barba, Simone Birindelli, Gaetano Campi, Silvia Rubini, Tobias Schülli, Mario Capizzi, Antonio Polimeni   +9 more
wiley   +1 more source

Predicting Lightweight Powders with Useful Sound Absorption Characteristics from Their Specifications

Applied Sciences
Powders that absorb sound by longitudinal vibration have either a gentle or sharp sound absorption curve at the first absorption peak frequency. Experiments were performed to investigate the conditions under which longitudinal vibration occurs in powders
Shuichi Sakamoto, Keisuke Jindai, Koki Ikeda, Yuya Kawakami, Hiroaki Soeta   +4 more
doaj   +1 more source

Active Learning‐Guided Accelerated Discovery of Ultra‐Efficient High‐Entropy Thermoelectrics

Advanced Materials, EarlyView.
An active learning framework is introduced for the accelerated discovery of high‐entropy chalcogenides with superior thermoelectric performance. Only 80 targeted syntheses, selected from 16206 possible combinations, led to three high‐performance compositions, demonstrating the remarkable efficiency of data‐driven guidance in experimental materials ...
Hanhwi Jang, Wooseok Lee, Hwa‐Jung Kim, Sohyang Cha, Hosun Shin, Won Bo Lee, Min‐Wook Oh, Yeon Sik Jung, YongJoo Kim   +8 more
wiley   +1 more source

Mechanical and Acoustic Properties of Alloys Used for Musical Instruments. [PDF]

Materials (Basel), 2022
Stanciu MD, Cosnita M, Cretu CN, Teodorescu HD, Trandafir M.   +4 more
europepmc   +1 more source

Moth‐Wing‐Inspired Multifunctional Metamaterials

Advanced Materials, EarlyView.
This study develops a moth‐wing‐inspired heterogeneous metamaterial that achieves synergistic broadband sound absorption, mechanical energy dissipation, and thermal insulation within a lightweight architected framework. Combining bioinspired gradient design, genetic‐algorithm optimization, and additive manufacturing, the bionic heterogeneous acoustic ...
Haoran Pei, Hang Yang, Ning Zhang, Tian Li, Xinxin Wang, Miao Zhao, Shuwei Ding, Xin Wang, Qinniu Lv, Zijie Xu, Yinghong Chen, Xinwei Li, Wei Zhai   +12 more
wiley   +1 more source

Cellulose Nanofiber and Nanoclay’s Effect on Acoustic Properties of Oak Wood (Quercus castaneifolia) Finger Joint

BioResources
Finger joints are one of the most important and widely used joints in the wood and wood products industry. The design, type of construction, and the type of glue used, etc., are the most important things in this joint that determine its final quality. In
Babak Ranjbar, Amir Lashgari, Ahmad Jahan-Latibari, Ajang Tajdini   +3 more
doaj  

Study on acoustic properties of hydrate-bearing sediments with reconstructed CO₂ hydrate in different layers during CH₄ hydrate mining. [PDF]

Ultrason Sonochem, 2023
Zhu YJ, Huang X, Li H, Zhu YJ, Wang XH, Sun YF, Xiao P, Sun CY, Chen GJ.   +8 more
europepmc   +1 more source

Observation of Dislocation Bound States and Skin Effects in Non‐Hermitian Chern Insulators

Advanced Materials, EarlyView.
Experimental observation of the dislocation‐induced bound states and skin effects is demonstrated in a line‐gap non‐Hermitian acoustic lattice. By utilizing active meta‐atoms to measure the full complex spectrum and biorthogonal eigenstates, the study reveals the exceptional‐point‐driven melting of defect modes.
Jia‐Xin Zhong, Bitan Roy, Yun Jing
wiley   +1 more source

Acoustic properties across the human skull. [PDF]

Ultrasonics, 2022
Riis TS, Webb TD, Kubanek J.
europepmc   +1 more source

Application of Swept-Sine Excitation for Acoustic Impedance Education [PDF]

The NASA Langley Normal Incidence Tube (NIT) and Grazing Flow Impedance Tube (GFIT) are regularly employed to characterize the frequency response of acoustic liners through the eduction of their specific acoustic impedance.
Howerton, Brian M., Jones, Michael G., Vold, Havard   +2 more
core   +1 more source