Results 11 to 20 of about 40,603 (292)

Iso-acoustic focusing of cells for size-insensitive acousto-mechanical phenotyping. [PDF]

Nat Commun, 2016
Mechanical phenotyping of single cells is an emerging tool for cell classification, enabling assessment of effective parameters relating to cells’ interior molecular content and structure.
Augustsson P, Karlsen JT, Su HW, Bruus H, Voldman J.   +4 more
europepmc   +2 more sources

Acoustic Streaming-Based 3D Cell Focusing and Plasma Separation [PDF]

Micromachines
Separating plasma from small-volume blood samples is important for rapid blood analysis in point-of-care testing. Microfluidic approaches provide flexible platforms for plasma extraction, but many methods either require complex pretreatment or rely on ...
Jingjing Zheng, Qian Wu, Zhenheng Lin, Xuejia Hu, Liqing Qiao, Genliang Li, Jinkun Luo   +6 more
doaj   +2 more sources

Tuneable gradient Helmholtz-resonator-based acoustic metasurface for acoustic focusing [PDF]

Journal of Physics D: Applied Physics, 2019
Conventional acoustic focusing requires an array of actuators or waveguides to form a complex wavefront, resulting in a high cost or bulky size. In this paper, an original gradient Helmholtz-resonator (HR)-based acoustic metasurface (AMS) is presented ...
Wang, X, Ouyang, H, Mo, J, Gong, K
core   +2 more sources

Wavelength-scale gas-filled cuboid acoustic lens with diffraction limited focusing

Results in Physics, 2019
Per the laws of geometrical optics, a plane-parallel medium does not possess focusing properties. However, in this paper, we demonstrate for the first time that an acoustic cuboid particle filled with CO2 is able to focus sound despite its flat surface ...
Constanza Rubio, Daniel Tarrazó-Serrano, Oleg V. Minin, Antonio Uris, Igor V. Minin   +4 more
doaj   +2 more sources

Sound-focusing package for MEMS vector hydrophone [PDF]

Microsystems & Nanoengineering
To address the challenge of acoustic wave attenuation in traditional Micro-Electro-Mechanical Systems (MEMS) vector hydrophone packaging, this study proposes a sound-focusing package with tapered apertures (TA) and a nylon sound-focusing cap (NSC ...
Zhiyuan Cheng, Guojun Zhang, Zhengyu Bai, Hang Zhao, Renxin Wang, Wendong Zhang, Haoran Li   +6 more
doaj   +2 more sources

Acoustic droplet vaporization is initiated by superharmonic focusing [PDF]

The Journal of the Acoustical Society of America, 2014
Acoustically sensitive emulsion droplets composed of a liquid perfluorocarbon have the potential to be a highly efficient system for local drug delivery, embolotherapy, or for tumor imaging.
Michel Versluis, Versluis, Michel; id_orcid, Versluis, Michel, Versluis, M, Vos, Hendrik J., Shpak, O, Verweij, Mariëlle, Nico de Jong, Detlef Lohse, Lohse, D, Shpak, Oleksandr, Vos, Rik, Lohse, Detlef, Oleksandr Shpak, de Jong, Nico, Hendrik J. Vos, Verweij, Martin, Martin Verweij, Jong, Nico   +18 more
core   +5 more sources

Focusing of Acoustic Waves through Acoustic Materials with Subwavelength Structures

, 2013
In this thesis, wave propagation through acoustic materials with subwavelength slits structures is studied. Guided by the findings, acoustic wave focusing is achieved with a specific material design. By using a parameter retrieving method, an effective
Xiao, Bingmu
core   +3 more sources

3D focusing acoustic lens optimization method using multi-factor and multi-level orthogonal test designing theory

Applied Acoustics, 2020
Focusing systems that consist of acoustic lenses exhibit higher controllability and focusing intensity when manipulating sound waves. Different parameters have different effects on the performance of the acoustic lens, so analyzing a variety of parameter
Shen Wang, Songling Huang, Lisha Peng
exaly   +3 more sources

Analysis of Predistortion Techniques on Fresnel Zone Plates in Ultrasound Applications

Sensors, 2021
In this work, we analyze the effect of predistortion techniques on the focusing profile of Fresnel Zone Plates (FZPs) in ultrasound applications. This novel predistortion method is based on either increasing or decreasing the width of some of the FZP ...
José Miguel Fuster, Sergio Pérez-López, Francisco Belmar, Pilar Candelas   +3 more
doaj   +1 more source

Acoustic Focusing with Intensity Modulation Based on Sub-Wavelength Waveguide Array

Crystals, 2021
Acoustic focusing with intensity modulation plays an important role in biomedical and life sciences. In this work, we propose a new approach for simultaneous phase and amplitude manipulation in sub-wavelength coupled resonant units, which has not been ...
Mingran Zhang, Guangrui Gu
doaj   +1 more source