Results 61 to 70 of about 109,668 (295)

The design and modeling of a lateral acoustic particle manipulator exhibiting quarter-wave operation

, 2008
Prior work [Petersson et al., 2004] has demonstrated the operation of a half-wave acoustic particle manipulator, whose forces act in the plane of a silicon substrate. In a half-wave device particles are directed to the centre of a channel. Devices acting
Peter Glynne-Jones, Ravula, Surendra K., Hill, M., Harris, N.R., Townsend, R.J, Hill, Martyn, Glynne-Jones, Peter, Rosemary J. Townsend, Glynne-Jones, P., Harris, Nicholas R., Townsend, Rosemary J., Ravula, S.K., Surendra K. Ravula, Martyn Hill, Nicholas R. Harris   +14 more
core   +1 more source

Vacuum Formed Spherical Triboelectric Architecture Overcoming Direction Constraints for 3D‐Omnidirectional Ultrasonic Energy Receiving

Advanced Functional Materials, EarlyView.
First vacuum formed spherical triboelectric converter for 3D‐omnidirectional ultrasonic energy receiving, with configurable DC or pulse outputs for versatile applications. ABSTRACT Ultrasound‐driven triboelectric nanogenerators (UD‐TENGs) have emerged as promising ultrasonic energy converters for underwater and biomedical applications.
Yanqin Huang, Mengjie Qin, Zixuan He, Xu Yang, Wenjie Chen, Siya Zhou, Qiyuan Zhang, Zhangwei Wang, Yicheng Wang, Yonghong Cheng, Daniel M. Mulvihill, Sandy Cochran, Qingshen Jing   +12 more
wiley   +1 more source

Modeling sound propagation in acoustic waveguides using a hybrid numerical method [PDF]

, 2008
Sound propagation in an acoustic waveguide is examined using a hybrid numerical technique. Here, the waveguide is assumed to be infinite in length with an arbitrary but uniform cross-section.
Kirby, R, Ray Kirby
core   +1 more source

Twin Crystal Moiré Metasurfaces for Crossing Flat‐Band Transport

Advanced Functional Materials, EarlyView.
This study introduces twin crystal moiré metasurfaces, breaking in‐plane symmetry to enable reconfigurable acoustic wave manipulation. By adjusting the twin angle and interlayer twist angle, various combinations of hyperbolic, flat bands, and elliptic states can be synthesized in the system.
Shida Fan, Chenglin Han, Kuan He, Chadi Ellouzi, Yunlong Wang, Li‐Qun Chen, Jie Sun, Zhaodong Xu, Chen Shen, Tianzhi Yang   +9 more
wiley   +1 more source

Numerical Simulation Study on the Response of Dipole Acoustic Logging to Borehole Enlargement

Cejing jishu
Affected by factors such as the uneven distribution of in-situ stress and the development of fracture zones, borehole enlargement often occurs in Shunbei Ordovician carbonate formation, which leads to the multi-solution nature of interpretation and ...
XIAO Honglin, ZHANG Xiaocong, ZHANG Xiaoming, YANG Bo, CHE Xiaohua, WANG Qian, SHEN Li   +6 more
doaj   +1 more source

An acoustic multi-touch sensing method using amplitude disturbed ultrasonic wave diffraction patterns [PDF]

, 2010
This paper proposes an acoustic multi-touch tactile sensing method. The proposed method is based on an amplitude disturbed ultrasonic wave diffraction pattern.
NIKOLOVSKI, Jean-Pierre, Hafez, M, VERGÉ, Michel, HAFEZ, Moustapha, MECHBAL, Nazih, LIU, Yuan   +5 more
core   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

Eccentricity effects on acoustic radiation from a spherical source suspended within a thermoviscous fluid sphere

, 2003
Acoustic radiation from a spherical source undergoing angularly periodic axisymmetric harmonic surface vibrations while eccentrically suspended within a thermoviscous fluid sphere, which is immersed in a viscous thermally conducting unbounded fluid ...
Azarpeyvand, Mahdi, Hasheminejad, Seyyed M., Hasheminejad, S.M., Azarpeyvand, M.   +3 more
core   +1 more source

Artificial Intelligence‐Assisted Workflow for Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling

Advanced Materials, EarlyView.
AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll, Ivan Pinto‐Huguet, Enzo Rotunno, Thomas Galvani, Catalina Coll, Payam Habibzadeh Kavkani, Maria Chiara Spadaro, Yann‐Michel Niquet, Martin Børstad Eriksen, Sara Martí‐Sánchez, Georgios Katsaros, Giordano Scappucci, Peter Krogstrup, Giovanni Isella, Andreu Cabot, Gonzalo Merino, Pablo Ordejón, Stephan Roche, Vincenzo Grillo, Jordi Arbiol   +19 more
wiley   +1 more source

Directional transmission of ultra-high frequency acoustic signals based on metamaterial structure

AIP Advances, 2019
Cell photoacoustic detection of acoustic signals has serious problems of transmission loss and difficulty in acquisition. Based on the acoustic transmission characteristics of acoustic supermaterials, the acoustic wave directional transmission model is ...
Jianning Han, Peng Yang, Jing-zhi Wu, Tao Wang, Jing Wang   +4 more
doaj   +1 more source