Results 141 to 150 of about 3,283,376 (328)
Bound on global error of the fast multipole method for Helmholtz equation in 2-D
, 2018 This paper analyze the global error of the fast multipole method(FMM) for two-dimensional Helmholtz equation. We first propose the global error of the FMM for the discretized boundary integral operator.
Meng, Wenhui
core
Advanced Materials Interfaces, EarlyView.Volume changes of a solid‐state battery cell are separated into the individual contributions of anode and cathode. Simultaneously determining the “reaction volumes” of both electrodes requires a reference electrode with a pressure‐independent potential.
Mervyn Soans +5 more
wiley +1 more source
Helmholtz operators on infinite graphs
HeliyonThe Helmholtz equation in its simplest form is Δu(a)=−k2u(a). In this note, we study a generalized discrete version of this equation on an infinite graph, by using potential-theoretic methods.
Varadha Raj Manivannan +1 more
doaj +1 more source
Analysis of the Shifted Helmholtz Expansion Preconditioner for the Helmholtz Equation
, 2018 We study in this paper the so-called expansion preconditioner which is a generalization of the shifted Helmholtz preconditioner. We show that this preconditioner can reduce the number of GMRES iterations if the meshsize is small enough and the shift is at most of the size of the wavenumber.
Cocquet, Pierre-Henri, Gander, Martin
openaire +3 more sources
Advanced Materials Interfaces, EarlyView.In situ SAXS/WAXS enables real‐time tracking of nanoparticle formation and evolution in exsolved and infiltrated Ni‐based perovskites under reducing conditions. The combined technique captures nucleation, growth, and coarsening dynamics with high temporal resolution, providing statistically robust insights into structural and morphological ...
Elena Vicente +4 more
wiley +1 more source
Development of Laterally Graded X‐Ray Multilayer Optics
Advanced Materials Technologies, EarlyView.This work presents the development of laterally graded X‐ray multilayer optics with both constant and variable lateral gradients. By precisely controlling substrate speed profiles and mask design, these multilayers achieve highly accurate lateral gradients and excellent sagittal thickness uniformity, making them ideal for spectroscopy application at ...
Arindam Majhi +11 more
wiley +1 more source
A Review on Microreactor Design for Effective Fischer–Tropsch Process Intensification
Advanced Materials Technologies, EarlyView.Design strategies for effective Fischer–Tropsch process intensification are summarized based on experimental and simulation experiences. Recommendations for catalyst loading of packed‐bed and wash‐coated microchannel, microtube, micromonolith, and microstructured reactors are discussed.
Yangjun Wei +5 more
wiley +1 more source
The Helmholtz equation in heterogeneous media: A priori bounds, well-posedness, and resonances [PDF]
Journal of Differential Equations, 2018 I. Graham, O. R. Pembery, E. Spence
semanticscholar +1 more source
Enhancing Triplet Excitons Lifetime Through Controlled Intermolecular Interactions
Advanced Optical Materials, EarlyView.Singlet fission (SF) is investigated in pentacene embedded in a surface‐anchored metal–organic framework, enabling a molecular arrangement inaccessible in pure organic crystals. This architecture changes the singlet fission dynamics significantly and enhances the triplet lifetime by almost four orders of magnitude.
Martin Richter +9 more
wiley +1 more source