Results 41 to 50 of about 88,929 (292)
Integrated ultrasonic particle positioning and low excitation light fluorescence imaging [PDF]
, 2013 A compact hybrid system has been developed to position and detect fluorescent micro-particles by combining a Single Photon Avalanche Diode (SPAD) imager with an acoustic manipulator. The detector comprises a SPAD array, light-emitting diode (LED), lenses,
Al-Rawhani, M. +3 more
core +2 more sources
, 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, M., Hasheminejad, S.M.
core +1 more source
Experiments on frightening effects to fish by underwater sound emitters for diversion from dangerous areas of reservoirs [PDF]
Caspian Journal of Environmental SciencesLarge reservoirs have areas dangerous for fish. For instance, water intake facilities, hydroelectric dams, etc. Therefore, it becomes necessary to protect or divert fish from such areas. One way to achieve this is to use loud underwater sound.
Artur Tumenov +4 more
doaj +1 more source
, 2004 A survey of acoustic devices for focusing airborne sound is presented. We introduce a new approach to design high quality acoustic lenses based on arrays of cylindrical rigid scatterers in air. A population based stochastic search algorithm is used in conjunction with the multiple scattering theory to optimize a cluster of cylinders that focuses the ...
Hakansson, Andreas +2 more
openaire +2 more sources
Advanced Functional Materials, EarlyView.Automat optical inspection (AOI) techniques in semiconductor fabrication can be leveraged in battery manufacturing, enabling scalable detection and analysis of electrode‐ and cell‐level imperfections through AI‐driven analytics and a digital‐twin framework.
Jianyu Li, Ertao Hu, Wei Wei, Feifei Shi
wiley +1 more source
International Journal of Smart and Nano Materials, 2015 We investigate the use of graded inhomogeneities in order to enhance the focusing and collimation performance of structure-embedded acoustic metamaterial lenses.
H. Zhu, F. Semperlotti
doaj +1 more source
Lens Geometries for Quantitative Acoustic Microscopy [PDF]
, 1995 Chapter 4 The purpose of the first Lemons-Quate acoustic microscope(1) was to image the surfaces of materials or biological cells with a high resolution. Unfortunately, competition with the optical microscope was only partially successful due to the high degree of absorption in the liquid-coupling medium at high frequencies.
Atalar, Abdullah +3 more
openaire +2 more sources
Advanced Functional Materials, EarlyView.Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco +7 more
wiley +1 more source
Design and Fabrication of Double-Focused Ultrasound Transducers to Achieve Tight Focusing
Sensors, 2016 Beauty treatment for skin requires a high-intensity focused ultrasound (HIFU) transducer to generate coagulative necrosis in a small focal volume (e.g., 1 mm3) placed at a shallow depth (3–4.5 mm from the skin surface).
Jihun Jang, Jin Ho Chang
doaj +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 +2 more
wiley +1 more source