Results 51 to 60 of about 39,348 (284)

Ultrasound-induced acoustophoretic motion of microparticles in three dimensions [PDF]

We derive analytical expressions for the three-dimensional (3D) acoustophoretic motion of spherical microparticles in rectangular microchannels. The motion is generated by the acoustic radiation force and the acoustic streaming-induced drag force.
Augustsson, Per,, Barnkob, R., Bruus, H., Kaehler, C. J., Laurell, Thomas,, Lund University., Lund University., Marin, A. G., Muller, P. B., Rossi, M.   +9 more
core   +1 more source

A Non‐Reciprocal Architected Porous Medium

Advanced Functional Materials, EarlyView.
ABSTRACT In several fluid flow, energy‐dumping, and energy‐harvesting applications, a dominant flow direction or dominant resistance direction is desirable. In this study, we propose a simple modular geometry that doubles flow resistance in one direction relative to the opposite direction, while maintaining laminar viscous flow.
Clément Vezies, Pablo Zavattieri, Nicolás Silin   +2 more
wiley   +1 more source

Theory of pressure acoustics with boundary layers and streaming in curved elastic cavities [PDF]

The acoustic fields and streaming in a confined fluid depend strongly on the acoustic boundary layer forming near the wall. The width of this layer is typically much smaller than the bulk length scale set by the geometry or the acoustic wavelength, which
Henrik Bruus, Jacob S. Bach, Kreyszig E., Landau L. D., Laurell T., Schlichting H., Yosioka K.   +6 more
core   +1 more source

Suppression of Acoustic Streaming in Shape-Optimized Channels [PDF]

Physical Review Letters, 2020
Acoustic streaming is an ubiquitous phenomenon resulting from time-averaged nonlinear dynamics in oscillating fluids. In this theoretical study, we show that acoustic streaming can be suppressed by two orders of magnitude in major regions of a fluid by optimizing the shape of its confining walls.
Jacob S. Bach, Henrik Bruus
openaire   +3 more sources

3D Printing Innovations in Polymeric Porous and Patterned Architecture

Advanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil, Sri Vaishnavi Thummalapalli, Clarissa Westover, Arunachalam Ramanathan, M. Taylor Sobzcak, Roumika Patil, Qixuan Xiang, Tiantian Li, Sui Yang, Timothy E. Long, Hongyue Sun, Xianqiao Wang, Yang Liu, Kenan Song   +13 more
wiley   +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

Three dimensional acoustic tweezers with vortex streaming

Communications Physics, 2021
Although acoustic and optical tweezers are widely used, it is challenging to create a 3D trap with a simple set-up. Here, acoustic vortex streaming is combined with radiation force to realise 3D trapping of particles in a fluid.
Junfei Li, Alexandru Crivoi, Xiuyuan Peng, Lu Shen, Yunjiao Pu, Zheng Fan, Steven A. Cummer   +6 more
doaj   +1 more source

Nanoparticle Dynamics in Composite Hydrogels Exposed to Low-Frequency Focused Ultrasound

Gels, 2023
Pulsed focused ultrasound (FUS) in combination with microbubbles has been shown to improve delivery and penetration of nanoparticles in tumors. To understand the mechanisms behind this treatment, it is important to evaluate the contribution of FUS ...
Caroline Einen, Sebastian E. N. Price, Kim Ulvik, Magnus Aa. Gjennestad, Rune Hansen, Signe Kjelstrup, Catharina de Lange Davies   +6 more
doaj   +1 more source

Flow profiling of a surface acoustic wave nanopump [PDF]

The flow profile in a capillary gap and the pumping efficiency of an acoustic micropump employing Surface Acoustic Waves is investigated both experimentally and theoretically.
A. Rathgeber, A. Wixforth, I. N. Bronsthein, J. Campbell, J. O. Rädler, M. Abramowitz, M. Kostur, M. Schindler, P. Talkner, S. Albeverio, S. Keller, S. Maiti, S. Shiokawa, T. Uchida, W. Nyborg, Z. Guttenberg   +15 more
core   +1 more source

Epidermal Patch Technologies for Integrated Healthcare and Infection Management

Advanced Healthcare Materials, EarlyView.
Epidermal patches have evolved from simple wound coverings into multifunctional, skin‐conformable platforms integrating drug delivery, biosensing, and therapeutic functionalities. This review highlights their material innovations, fabrication strategies, and intelligent designs, including hydrogels, microneedles, and flexible electronics, while ...
Yuqi Wang, Atakan Tevlek, Pawel L. Urban, Boaz Mizrahi, Onome Ejeromedoghene, Roshan Deen, Yuanjing Lin, Jagan Mohan Dodda   +7 more
wiley   +1 more source