Results 91 to 100 of about 25,871,581 (275)
A Comparison of Splitting Techniques for 3D Complex Padé Fourier Finite Difference Migration
International Journal of Geophysics, 2011 Three-dimensional wave-equation migration techniques are still quite expensive because of the huge matrices that need to be inverted. Several techniques have been proposed to reduce this cost by splitting the full 3D problem into a sequence of 2D ...
Jessé C. Costa +3 more
doaj +1 more source
One-way equations for wave propagation in complex flows
, 2022 Dans une optique de réduction du bruit engendré par les avions, de nombreux phénomènes restent encore à mieux comprendre et de nombreuses configurations sont à étudier. Un besoin en outils de simulation précis et efficaces se fait donc ressentir pour répondre à ces problématiques de propagation d'ondes. Une approche envisageable est celle des équations
openaire +1 more source
Bio‐Inspired Artificial Ionic Mechanoreceptor
Advanced Functional Materials, EarlyView.A skin‐inspired artificial mechanoreceptor based on ionic interactions is presented for biomimetic tactile sensing. Pressure‐driven ionic redistribution within microfluidic channels generates a self‐powered electrical signal without external bias. The generated waveform exhibits mechanoreceptor‐like temporal features, including overshoot and undershoot,
Mohammad Akbari +4 more
wiley +1 more source
Kinetics‐Controlled Architecture of Binder‐Free Organic Electrodes for Enhanced Ion Transport
Advanced Functional Materials, EarlyView.Pulse reverse electrodeposition controls nucleation and growth to create hierarchically porous Py‐derived oligomeric electrodes with enhanced ionic accessibility and reduced transport resistance. The resulting binder‐free architectures translate these transport advantages into practical sodium‐storage functionality.
Satendra Kumar +1 more
wiley +1 more source
FOURTH-ORDER AND OPTIMISED FINITE DIFFERENCE SCHEMES FOR THE 2-D WAVE EQUATION [PDF]
, 2013 This paper investigates some fourth-order accurate explicit finitedifference schemes for the 2-D wave equation obtained using 13-,17-, 21-, and 25-point discrete Laplacians.
Bilbao, Stefan, Hamilton, Brian
core
Nanoconfinement‐Induced Second‐Harmonic Circular Dichroism via Chirality–Ferroelectric Coupling
Advanced Functional Materials, EarlyView.Nanoconfinement of a ferroelectric nematic liquid crystal within a chiral nanoporous sponge yields an enhanced second‐harmonic generation circular dichroism (|gSHG–CD| ≈ 1.1). Polarization‐resolved analysis suggests an additional magnetic‐dipole‐associated nonlinear contribution under nanoconfinement, highlighting chirality–ferroelectric coupling as a ...
Jae‐Jin Lee +5 more
wiley +1 more source
Electronic Journal of Differential Equations, 2007 The spatially periodic Kuramoto-Sivashinsky equation (pKS) $$ partial_t u=-partial_x^4 u-c_3partial_x^3 u-c_2partial_x^2 u+2 deltapartial_x(cos( x)u)-partial_x(u^2), $$ with $u(t,x)inmathbb{R}$, $tgeq 0$, $xinmathbb{R}$, is a model problem for inclined ...
Andreas Wierschem, Hannes Uecker
doaj
2D Skeletal Muscle Thin Film Actuators Enhance Efficiency of Biohybrid Robots
Advanced Functional Materials, EarlyView.2D skeletal muscle thin film actuators generate millinewton‐scale forces and millimeter‐scale strokes while remaining functional for over 30 days. Their force density is 20‐fold higher than 3D skeletal muscle actuators, enabling multi‐fin robots with tunable speed and multidirectional steering.
Maheera Bawa +5 more
wiley +1 more source
Nanomaterials, 2018 The mechanical and quantum properties of a nanomechanical resonator can be improved by connecting it to a superconducting resonator in a way that the resonator exhibits new phenomena that are possibly available to novel quantum technologies.
Jeong Ryeol Choi, Sanghyun Ju
doaj +1 more source
Propagator and wave-equation inversion for near-receiver material properties [PDF]
, 2004 Near-receiver material properties are required for the separation of the recorded wavefield into upgoing and downgoing P and S waves, and are also important for static time-shift corrections.
Trampert, J. +2 more
core +1 more source