Results 51 to 60 of about 40,603 (292)
Multinode Acoustic Focusing for Parallel Flow Cytometry [PDF]
Analytical Chemistry, 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 ...
Menake E, Piyasena +6 more
openaire +2 more sources
Acoustic Forceps Based on Focused Acoustic Vortices with Different Topological Charges
Sensors, 2023 For enhanced energy concentration with improved flexibility for object manipulation, a focused acoustic vortex (FAV) is designed using a sector planar piston transducer array and acoustic lens that can produce the effective concentration of the acoustic field to perform the focusing function.
Libin Du +3 more
openaire +3 more sources
Binary acoustic metasurfaces for dynamic focusing of transcranial ultrasound
Frontiers in Neuroscience, 2022 Transcranial focused ultrasound (tFUS) is a promising technique for non-invasive and spatially targeted neuromodulation and treatment of brain diseases.
Zhongtao Hu +5 more
doaj +1 more source
Laser-nucleated acoustic cavitation in focused ultrasound [PDF]
Review of Scientific Instruments, 2011 Acoustic cavitation can occur in therapeutic applications of high-amplitude focused ultrasound. Studying acoustic cavitation has been challenging, because the onset of nucleation is unpredictable. We hypothesized that acoustic cavitation can be forced to occur at a specific location using a laser to nucleate a microcavity in a pre-established ...
Gerold, Bjoern +5 more
openaire +3 more sources
Advanced Engineering Materials, EarlyView.This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky +5 more
wiley +1 more source
Acoustic phonon anisotropy: Phonon focusing
, 2019 Title of program: ACOUSTIC PHONON ANISOTROPY Catalogue Id: AAOJ_v1_0 Nature of problem Calculation of the phase velocity, polarization vector, group velocity, and phonon-focusing enhancement factor for non-dispersive acoustic plane-waves of any ...
G.A. Northrop (8090969)
core +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Sharp acoustic vortex focusing by Fresnel-spiral zone plates [PDF]
, 2018 We report the optimal focusing of acoustic vortex beams by using flat lenses based on a Fresnel- spiral diffraction grating. The flat lenses are designed by spiral-shaped Fresnel zone plates composed of one or several arms.
Garcia Raffi, Luis Miguel +14 more
core +1 more source
Karl Popper and the Mechanisms of Hydrogen Embrittlement
Advanced Engineering Materials, EarlyView.Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley +1 more source
Acoustic Focusing Imaging Characteristics Based on Double Negative Locally Resonant Phononic Crystal
IEEE Access, 2019 To achieve high-efficiency and high-resolution acoustic focusing, we used artificial periodic acoustic structures composed of cell arrays to manipulate the acoustic transmission wave front, and used finite element software to simulate the acoustic field ...
Shuai Tang, Rui Wang, Jianning Han
doaj +1 more source