Results 41 to 50 of about 75,524 (303)
Miniature photonic-crystal hydrophone optimized for ocean acoustics
, 2010 This work reports on an optical hydrophone that is insensitive to hydrostatic pressure, yet capable of measuring acoustic pressures as low as the background noise in the ocean in a frequency range of 1 Hz to 100 kHz.
Gordon S. Kino +7 more
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AIP Advances, 2021 The structure of the sunflower head can be used to realize broadband applications in optics. However, this 2D structure, with a ring-shaped reciprocal space, only has a normalized Fourier coefficient peak around 0.033, which leads to a relatively low ...
Nian-Mu Wang, Huang Huang, Chao Zhang
doaj +1 more source
Acoustic Tamm states of three-dimensional solid-fluid phononic crystals
The Journal of the Acoustical Society of America, 2018 In this work, the existence and propagation of acoustic Tamm states at the interface of air and a face-centered cubic solid-fluid phononic crystal composed of spherical air voids interconnected by cylindrical air channels are demonstrated. Supercell band structure computations via the finite element method reveal surface bands for Tamm states on (100),
Korozlu, Nurettin +3 more
openaire +4 more sources
Numerical investigation of the effect of crosswind on sound propagation outdoors [PDF]
, 2016 The effect of wind on sound propagation in the atmosphere has been studied extensively before with an emphasize on downwind sound propagation, typically representing worst-case scenarios.
Homikx, Maarten, Van Renterghem, Timothy
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Shannon Entropy as Characterization Tool in Acoustics
, 2007 We introduce Shannon's information entropy to characterize the avoided crossing appearing in the resonant Zener-like phenomenon in ultrasonic superlattices made of two different fluidlike meta- materials.
Sanchez-Dehesa, Jose +1 more
core +1 more source
A review of the state of art in applying Biot theory to acoustic propagation through the bone [PDF]
, 2014 Understanding the propagation of acoustic waves through a liquid-perfused porous solid framework such as cancellous bone is an important pre-requisite to improve the diagnosis of osteoporosis by ultrasound.
Aygun, Haydar
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Equivalent circuit models of two-layer flexure beams with excitation by temperature, humidity, pressure, piezoelectric or piezomagnetic interactions [PDF]
Journal of Sensors and Sensor Systems, 2014 Two-layer flexure beams often serve as basic transducers in actuators and sensors. In this paper a generalized description of their stimuli-influenced mechanical behavior is derived.
U. Marschner +3 more
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Solid‐State Photochemistry in Resonant Acoustic Mixers
Chemistry – A European JournalAbstractHerein, we developed the first photochemical reaction set‐up under solid‐state conditions using a resonant acoustic mixer (RAM), a novel mechanochemical methodology that eliminates the need for milling media. This innovation outscores previous approaches in the ball mill under avoidance of milling balls and their related disadvantages. Further,
Carolina Spula +3 more
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Advanced Electronic Materials, 2023 Flexible artificial synapses, a conjunctive product of brain‐inspired neuromorphic computing and wearable electronics, arouse enormous interest in highly connected and energy‐efficient neural networks.
Chang Liu +11 more
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Results in Physics, 2023 Most of the nonlinear phenomena are described by partial differential equation in natural and applied sciences such as fluid dynamics, plasma physics, solid state physics, optical fibers, acoustics, biology and mathematical finance.
Ayesha Mahmood +5 more
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