The Faculty of Mathematics and Natural Sciences: Search
Now showing items 1-10 of 17
Localized Coulomb descriptors for the Gaussian Approximation Potential
(2016-02)
We introduce a novel class of localized atomic environment representations, based upon the Coulomb matrix. By combining these functions with the Gaussian approximation potential approach, we present LC-GAP, a new system ...
Molecular dynamics simulations of the influence of chemical cross-links on the elastic moduli of polymer-carbon nanotube composites
(2005-06)
In this article we compare the Young modulus of polyethylene carbon nanotube composites with chemical cross-links between the nanotube and the polyethylene matrix to the modulus of a composite with weak non-bonded ...
A bond order dissection ANOVA approach for efficient electronic structure calculations
(2014-03)
In this article, we present a new decomposition approach for the efficient approximate calculation of the electronic structure problem for molecules. It is based on a dimension-wise decomposition of the space the underlying ......
An adaptive multiscale approach for electronic structure methods
(2016)
In this paper, we introduce a new scheme for the efficient numerical treatment of the electronic Schr¨odinger equation for molecules. It is based on the combination of a many-body expansion, which corresponds to the bond ...
A wavelet based sparse grid method for the electronic Schrödinger equation
(2006-05)
We present a direct discretization of the electronic Schrödinger equation. It is based on one-dimensional Meyer wavelets from which we build an anisotropic multiresolution analysis for general particle spaces by a tensor ...
A molecular dynamics study of the aluminosilicate chains structure in Al-rich calcium silicate hydrated (C-S-H) gels
(2007-11)
Calcium silicate hydrated (C-S-H) gel is the principal binding phase of the cement paste and responsible for its strength. It is basically composed of silicate chains held together with CaO layers, where different guest ...
Tensor product multiscale many-particle spaces with finite-order weights for the electronic Schrödinger equation
(2009-07)
In this article we combine the favorable properties of efficient Gaussian type orbitals basis sets, which are applied with good success in conventional electronic structure methods, and tensor product multiscale bases, ...
A molecular dynamics study on the impact of defects and functionalization on the Young modulus of boron-nitride nanotubes
(2007)
In this article, we examine the Young modulus of (6, m) boron-nitride nanotubes with vacancy and functionalization defects. We employ molecular dynamics simulations using the Parrinello-Rahman approach. To this end, all ......
A multilevel approach to the evolutionary generation of polycrystalline structures
(2015-11)
The Poisson-Voronoi tesselation is commonly used as an approximation to the microstructure of polycrystalline material. Although simple, this approximation fails to respect basic physical properties observed empirically, ......
Molecular dynamics simulations of boron-nitride nanotubes embedded in amorphous Si-B-N
(2005-05)
In this article, we examine the elastic properties of boron-nitride nanotubes, which are embedded in amorphous silicon-boron-nitride ceramics. We employ molecular dynamics simulations using the Parrinello-Rahman approach. ...












