Results 91 to 100 of about 4,479,393 (285)

Defect Detection in Solid Timber Panels Using Air-Coupled Ultrasonic Imaging Techniques

Applied Sciences
This paper reports on investigations of the air-coupled ultrasonic (ACU) method to detect common defects in solid timber panels made of Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.).
Xiaochuan Jiang, Jun Wang, Ying Zhang, Shenxue Jiang   +3 more
doaj   +1 more source

Advancing Human Skin Equivalents: The Crucial Role of Neurovascular Integration

Advanced Healthcare Materials, EarlyView.
This review discusses the importance of integrating vascular and peripheral nerve systems into human skin equivalents (HSEs) to better recapitulate native skin physiology. Recent advances in vascularized, innervated, and neurovascularized HSEs are highlighted, together with emerging bioengineering strategies, current challenges, and future ...
Hao Wu, Lorenzo Moroni, Nicolas Lebonvallet, Vincent Flacher, Paul Wieringa   +4 more
wiley   +1 more source

Capacitive ultrasonic transducers fabricated using microstereolithography [PDF]

Air-coupled thin-membrane capacitive ultrasonic transducers have been developed that use microstereolithography fabrication with architectures comprised entirely of partially metalised photopolymer. These devices derive considerable advantages from rapid
Bradley, Robert John
core  

Structural Optimization Design of the Dual-Layer CMUT with Low Power Consumption and High Ultrasonic Reception Performance

Micromachines
Capacitive micromachined ultrasonic transducers (CMUTs) have been widely applied in fields such as air-coupled ultrasonic nondestructive testing, gesture recognition, and 3D imaging. However, most current CMUTs struggle to simultaneously achieve both low
Jie Li, Zhaohui Xiao, Zutang Wu, Xiong Hu, Zhikang Li, Yihe Zhao, Min Li, Jiawei Yuan, Shaohui Qin, Libo Zhao   +9 more
doaj   +1 more source

Atom‐Efficient Cerium‐Based Molecular Cages as Biocompatible Reactive Oxygen Scavengers

Advanced Healthcare Materials, EarlyView.
Discrete mixed‐valent cerium molecular cages organize accessible redox centers within confined coordination environments and scavenge superoxide, hydrogen peroxide, and hydroxyl radicals. Encapsulation of the lead cage in an ROS‐responsive DTP nanoplatform enables lesion‐associated delivery, attenuates macrophage oxidative stress and inflammation, and ...
Chao Li, Chunbai Xiang, Ye Xu, Yu Liu, Keze Hong, Fanchu Zeng, Gelin Xu, Zhao‐Xi Wang, Jonathan L. Sessler, Ping Gong   +9 more
wiley   +1 more source

Calibration of Air-Coupled Transducers for Absolute Nonlinear Ultrasonic Measurements [PDF]

, 2016
We describe a novel calibration technique of air-coupled transducers for nonlinear ultrasonic measurements through homogenous, isotropic media. Our calibration technique combines laser interferometrywith a model-based approach to derive a relationship ...
Kim, Jin-Yeon, Jacobs, Laurence, Selby, Nicholas, Torello, David   +3 more
core  

Comparative Study of Coupling Techniques in Lamb Wave Testing of Metallic and Cementitious Plates

Sensors, 2019
Lamb waves have emerged as a valuable tool to examine long plate-like structures in a faster way compared to conventional bulk wave techniques, which make them attractive in non-destructive testing.
Santiago Vázquez, Jorge Gosálbez, Ignacio Bosch, Alicia Carrión, Carles Gallardo, Jordi Payá   +5 more
doaj   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

Advanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong, You Zhou, Qingxiu Li, Wenyu Zhao, Sunyingyue Geng, Hangfei Li, Yan‐Bing Leng, Shirui Zhu, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Ye Zhou, Su‐Ting Han   +12 more
wiley   +1 more source

Epitaxially Integrated Electro‐Optic KNbO3 Thin Films on Silicon

Advanced Materials, EarlyView.
We demonstrate the first epitaxial integration of electro‐optic KNbO3 thin films on silicon using suboxide molecular‐beam epitaxy. Combining adsorption‐controlled molecular‐beam epitaxy, advanced characterization, and phase‐field modeling, we demonstrate phase‐pure crystalline films mirroring bulk crystals with robust Pockels response, enabling future ...
Sankalpa Hazra, Tobias Schwaigert, Yingxin Zhu, Aiden Ross, Muhammad Aminul Haque Chowdhury, Shun‐Li Shang, Sameer Singh, Zhiyu Zhang, Zhe Wang, Brynn Brower, Saugata Sarker, Suchismita Sarker, Zi‐Kui Liu, Rama K. Vasudevan, Long‐Qing Chen, Yang Yang, Darrell G. Schlom, Venkatraman Gopalan   +17 more
wiley   +1 more source

Determination of Elastic Parameters of Thin Layers Used in Paintings by Air-Coupled Ultrasound Transmission Measurements Under Varying Incidence

IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control
Paintings are intricate structures made up of multiple layers of materials that possess different properties and thicknesses. Due to their fragility, they can be damaged by exposure to various environmental factors such very large amplitude vibrations ...
Victor Takahashi, Michael Lematre, Jerome Fortineau, Marc Lethiecq   +3 more
doaj   +1 more source