Results 81 to 90 of about 1,299,133 (276)

Decoupling the Size and Loading Effects in Silver Nanoparticles for Efficient Paired Carbon Dioxide and Formaldehyde Electrolysis

Advanced Functional Materials, EarlyView.
We investigate size‐dependent CO selectivity on Ag nanoparticles, where optimized Ag loading achieves nearly 100% Faradaic Efficiency for CO at −100 mA·cm−2. In situ SERS and XPS reveal the crucial role of optimized loading in catalytic performance. The Ag/C catalyst further exhibits bifunctional activity, enabling efficient electrolysis of CO2 and ...
Venkata S. R. K. Tandava, Clara Große, Debabrata Bagchi, Zhenye Zhu, Suptish Ghosh, J. Niklas Hausmann, Carsten Walter, Rosario Suarez Anzorena, Catalina Elena Jimenez, Yasmin Lucero Cobos‐Becerra, Jack C. Q. Fletcher, Tobias Sontheimer, Michael Schwarze, Holger Dau, Matthias Driess, Marcus Bär, Prashanth W. Menezes   +16 more
wiley   +1 more source

Classical and Nonclassical Symmetries for the Helmholtz Equation

Journal of Mathematical Analysis and Applications, 1993
In this note, the problem of group invariant solutions of the two- dimensional Helmholtz equation (1) \(u_{tt} + u_{xx} + \omega^ 2 u = 0\) is revisited. The authors compare the well-known ``classical method'' of infinitesimal generators of the symmetries of (1) with the ``nonclassical'' group analysis (studied by Bluman and Cole) which obtains the ...
NUCCI, Maria Clara, AMES W. F.
openaire   +4 more sources

Optimal shape parameter for meshless solution of the 2D Helmholtz equation

CT&F Ciencia, Tecnología & Futuro, 2019
The solution of the Helmholtz equation is a fundamental step in frequency domain seismic imaging. This paper deals with a numerical study of solutions for 2D Helmholtz equation using a Gaussian radial basis function-generated finite difference scheme ...
Mauricio Alejandro Londoño-Arboleda, Hebert Montegranario-Riascos   +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

Fast multipole methods for the Helmholtz equation in three dimensions /

, 2004
This volume in the Elsevier Series in Electromagnetism presents a detailed, in-depth and self-contained treatment of the Fast Multipole Method and its applications to the solution of the Helmholtz equation in three dimensions.
Duraiswami, Ramani., Gumerov, Nail A.
core  

Stereometric Molecular Engineering for Ultra‐Stable Aqueous Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
Stereochemical configuration of molecular additives greatly influences interfacial adsorption at the Zn surface. The optimal tilted dual‐anchored adsorption geometry of myo‐inositol constructs a water‐deficient interface and regulates the solvation structure.
Cunxin Liu, Peng Yang, Mohamed H. Helal, Jiang Zhou, Eero Kontturi   +4 more
wiley   +1 more source

Special wave finite and infinite elements for the solution of the Helmholtz equation [PDF]

, 2003
The theory and the formulation of the special wave finite elements are discussed, and the special integration schemes for the elements are developed.
Sugimoto, Rie
core  

Finite-element discretisations of the heterogenenous and stochastic Helmholtz equation in Firedrake

, 2020
This code provides Python classes for discretisation of both the heterogeneous and stochastic Helmholtz equation using the Firedrake finite-element ...
Owen Pembery
core   +1 more source

Deciphering the Photopolymerization‐Induced Nanostructures and Interface Formation for Submicrometer Additive Manufacturing

Advanced Functional Materials, EarlyView.
This work reveals the UV‐curing‐induced monomer‐rich domain, oligomer‐rich domain, and entangled oligomer domain. The cured submicron films in stressed state induce interlayer nano‐wrinkle structures during the deposition of the second layer. Stress‐free cured films in relaxed state form non‐diffusive, diffusive and semi‐diffusive interlayer ...
Shouzheng Chen, Yufeng Zhai, Jungui Zhou, Lixing Li, Simon Schraad, Guangjiu Pan, Xuehe Jiang, Sarathlal Koyiloth Vayalil, Rolf A. T. M. van Benthem, Julien R. G. Navarro, Johan F. G. A. Jansen, Mats K. G. Johansson, Peter Müller‐Buschbaum, Stephan V. Roth   +13 more
wiley   +1 more source

Al3+/Ta5+ Co‐Doping Promotes Homogeneous Li+ Transport Enabling High Performance Ni‐Rich Layered Oxide Cathodes

Advanced Functional Materials, EarlyView.
Al3+/Ta5+ co‐doping refines the primary particles of LiNiO2, reduces Li/Ni antisite disorder, and expands the c‐axis lattice parameter, thereby enabling faster and more homogeneous Li+ transport. Such rapid and homogeneous Li+ transport suppresses high‐voltage phase transitions and microcrack formation, ultimately improving the rate capability and long‐
Yanhao Ren, Zezhou Lin, Zhaowen Bai, Wei Wang, Yangqian Zhang, Jihao Zhang, Qingyu Kong, Yisen Xu, Jiaqi Wu, Fengting Ye, Haitao Huang, Yang Ren   +11 more
wiley   +1 more source