Dynamic acoustic focusing in photoacoustic transmitter [PDF]
Photoacoustics, 2021 Photoacoustic transmitter represents a promising substitute for conventional piezoelectric counterparts. However, lack of easy and effective method for dynamically manipulating the focused acoustic field is a common and tricky problem faced by current ...
Qi Li +5 more
doaj +4 more sources
Enhancement in acoustic focusing of micro and nanoparticles by thinning a microfluidic device [PDF]
Royal Society Open Science, 2019 The manipulation of micro/nanoparticles has become increasingly important in biological and industrial fields. As a non-contact method for particle manipulation, acoustic focusing has been applied in sorting, enrichment and analysis of particles with ...
Nobutoshi Ota +6 more
doaj +4 more sources
Acoustic focusing of beads and cells in hydrogel droplets [PDF]
Scientific Reports, 2021 The generation of hydrogel droplets using droplet microfluidics has emerged as a powerful tool with many applications in biology and medicine. Here, a microfluidic system to control the position of particles (beads or astrocyte cells) in hydrogel ...
Anna Fornell +3 more
doaj +2 more sources
Integrated Ultrasound Device for Precision Bladder Volume Monitoring via Acoustic Focusing and Machine Learning [PDF]
Advanced ScienceBladder volume monitoring is critical for managing lower urinary tract dysfunctions, yet existing methods remain invasive or operator‐dependent and are unsuitable for continuous use. Here, we present a conformable wearable ultrasound system that combines
Long Long Cao +4 more
doaj +2 more sources
Acoustic focusing by a double layered acoustic grating
Journal of Sound and Vibration, 2023 Acoustic focusing has wide applications in many domains including non-destructive evaluation, medical diagnosis and particle manipulation. In the past decades, due to their outstanding capacity of wave manipulation, acoustic metasurfaces (AMSs) based on various structures, such as coiling-up space structures, Helmholtz-resonator-like structures and ...
Liangfen Du +4 more
openaire +4 more sources
Role of gas nuclei in ultrasonic atomization in acoustic fountains: mechanisms and experimental evidence [PDF]
Ultrasonics SonochemistryUltrasonic atomization, particularly in the form of acoustic fountains, is widely used in various fields, but its underlying mechanisms remain incompletely understood, with ongoing debates between wave-driven and bubble-driven hypotheses.
Yandong Gao +4 more
doaj +2 more sources
Sound-focusing package for MEMS vector hydrophone [PDF]
Microsystems & NanoengineeringTo 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 +6 more
doaj +2 more sources
Multinode acoustic focusing for parallel flow cytometry. [PDF]
Anal Chem, 2012 Flow cytometry can simultaneously measure and analyze multiple properties of single cells or particles with high sensitivity and precision. Yet, conventional flow cytometers have fundamental limitations with regards to analyzing particles larger than about 70 μm, analyzing at flow rates greater than a few hundred microliters per minute, and providing ...
Piyasena ME +6 more
europepmc +4 more sources
Iso-acoustic focusing of cells for size-insensitive acousto-mechanical phenotyping. [PDF]
Nat Commun, 2016 Augustsson P +4 more
europepmc +2 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 +3 more
doaj +1 more source