SMILES-X: autonomous molecular compounds characterization for small datasets without descriptorsThere is more and more evidence that machine learning can be successfully applied in materials science and related fields. However, datasets in these fields are often quite small (1000 samples).…Guillaume Lambard, Ekaterina Gracheva·Jun 20, 2019SaveLearn
Multi-physics simulations of lightning strike on elastoplastic substratesThis work is concerned with the numerical simulation of elastoplastic, electromagnetic and thermal response of aerospace materials due to their interaction with a plasma arc under lightning strike…Stephen Millmore, Nikolaos Nikiforakis·Jun 20, 2019SaveLearn
Parameter sensitivity analysis of dynamic ice sheet models-Numerical computationsThe friction coefficient and the base topography of a stationary and a dynamic ice sheet are perturbed in two models for the ice: the full Stokes equations and the shallow shelf approximation. The…Gong Cheng, Per Lötstedt·Jun 19, 2019SaveLearn
Parameter sensitivity analysis of dynamic ice sheet modelsThe velocity field and the height at the surface of a dynamic ice sheet are observed. The ice sheets are modeled by the full Stokes equations and shallow shelf/shelfy stream approximations. Time…Gong Cheng, Per Lötstedt·Jun 19, 2019SaveLearn
Kinematics and constitutive relations in the stress-gradient theory: interpretation by homogenizationThe stress-gradient theory has a third order tensor as kinematic degree of freedom, which is work-conjugate to the stress gradient. This tensor was called micro-displacements just for dimensional…Geralf Hütter, Karam Sab, Samuel Forest·Jun 19, 2019SaveLearn
A low-rank method for time-dependent transport calculationsLow-rank approximation is a technique to approximate a tensor or a matrix with a reduced rank to reduce the memory required and computational cost for simulation. Its broad applications include…Zhuogang Peng, Ryan G. McClarren, Martin Frank·Jun 19, 2019SaveLearn
Delayed-rate equations model for femtosecond laser-induced breakdown in dielectricsExperimental and theoretical studies of laser-induced breakdown in dielectrics provide conflicting conclusions about the possibility to trigger ionization avalanche on the sub-picosecond time scale…Jean-Luc Déziel, Louis J. Dubé, Charles Varin·Jun 19, 2019SaveLearn
Method for the calculation of the Hamaker constants of organic materials by the Lifshitz macroscopic approach with DFTThe Hamaker constants, which are coefficients providing quantitative information on intermolecular forces, were calculated for a number of different materials according to the Lifshitz theory via…Hideyuki Takagishi, Takashi Masuda, Tatsuya Shimoda et al.·Jun 19, 2019SaveLearn
A Consistent Parallel Isotropic Unstructured Mesh Generation Method based on Multi-phase SPHIn this paper, we propose a consistent parallel unstructured mesh generator based on a multi-phase SPH method. A set of physics-motivated modeling equations are developed to achieve the targets of…Zhe Ji, Lin Fu, Xiangyu Hu et al.·Jun 19, 2019SaveLearn
Simulator-based training of generative models for the inverse design of metasurfacesMetasurfaces are subwavelength-structured artificial media that can shape and localize electromagnetic waves in unique ways. The inverse design of these devices is a non-convex optimization problem…Jiaqi Jiang, Jonathan A. Fan·Jun 18, 2019SaveLearn
Neutron Diffraction Strain Tomography: Demonstration and Proof-of-ConceptRecently, a number of reconstruction algorithms have been presented for residual strain tomography from Bragg-edge neutron transmission measurements. In this paper, we examine whether strain…A. W. T. Gregg, J. N. Hendriks, C. M. Wensrich et al.·Jun 18, 2019SaveLearn
Using Gaussian Process Regression to Simulate the Vibrational Raman Spectra of Molecular CrystalsVibrational properties of molecular crystals are constantly used as structural fingerprints, in order to identify both the chemical nature and the structural arrangement of molecules. The simulation…Nathaniel Raimbault, Andrea Grisafi, Michele Ceriotti et al.·Jun 18, 2019SaveLearn
Eigenstructure-preserving scheme for a hyperbolic systemA hyperbolic system must have a set of linearly independent eigenvectors and corresponding real eigenvalues. In numerical simulations, however, the eigenvalues can be complex because truncation…Takashi Shiroto, Akinobu Matsuyama, Nobuyuki Aiba·Jun 18, 2019SaveLearn
Boundary Conditions for Continuum Simulations of Wall-bounded Kinetic PlasmasContinuum kinetic simulations of plasmas, where the distribution function of the species is directly discretized in phase-space, permits fully kinetic simulations without the statistical noise of…Petr Cagas, Ammar Hakim, Bhuvana Srinivasan·Jun 17, 2019SaveLearn
Non-equilibrium Green's Function and First Principle Approach to Modeling of Multiferroic Tunnel JunctionsRecently, multiferroic tunnel junctions (MFTJs) have gained significant spotlight in the literature due to its high tunneling electro-resistance together with its non-volatility. In order to analyze…Robert Andrawis, Kaushik Roy·Jun 17, 2019SaveLearn
Discrete unified gas kinetic scheme for nonlinear convection-diffusion equationsIn this paper, we develop a discrete unified gas kinetic scheme (DUGKS) for general nonlinear convection-diffusion equation (NCDE), and show that the NCDE can be recovered correctly from the present…Jinlong Shang, Zhenhua Chai, Huili Wang et al.·Jun 16, 2019SaveLearn
Time-series learning of latent-space dynamics for reduced-order model closureWe study the performance of long short-term memory networks (LSTMs) and neural ordinary differential equations (NODEs) in learning latent-space representations of dynamical equations for an…Romit Maulik, Arvind Mohan, Bethany Lusch et al.·Jun 15, 2019SaveLearn
freud: A Software Suite for High Throughput Analysis of Particle Simulation DataThe freud Python package is a powerful library for analyzing simulation data. Written with modern simulation and data analysis workflows in mind, freud provides a Python interface to fast,…Vyas Ramasubramani, Bradley D. Dice, Eric S. Harper et al.·Jun 14, 2019SaveLearn
Analog Coupled Oscillator Based Weighted Ising MachineWe report on an analog computing system with coupled non-linear oscillators which is capable of solving complex combinatorial optimization problems using the weighted Ising model. The circuit is…Jeffrey Chou, Suraj Bramhavar, Siddhartha Ghosh et al.·Jun 14, 2019SaveLearn
Runko: Modern multiphysics toolbox for plasma simulationsRunko is a new open-source plasma simulation framework implemented in C++ and Python. It is designed to function as an easy-to-extend general toolbox for simulating astrophysical plasmas with…J. Nättilä·Jun 14, 2019SaveLearn
Graph convolutional neural networks as "general-purpose" property predictors: the universality and limits of applicabilityNowadays the development of new functional materials/chemical compounds using machine learning (ML) techniques is a hot topic and includes several crucial steps, one of which is the choice of…Vadim Korolev, Artem Mitrofanov, Alexandru Korotcov et al.·Jun 14, 2019SaveLearn
A minimal model for slow, sub-Rayleigh, super-shear and unsteady rupture propagation along homogeneously loaded frictional interfacesIn nature and experiments, a large variety of rupture speeds and front modes along frictional interfaces are observed. Here, we introduce a minimal model for the rupture of homogeneously loaded…Kjetil Thøgersen, Henrik Andersen Sveinsson, David Skålid Amundsen et al.·Jun 14, 2019SaveLearn
Free-energy cost of localizing a single monomer of a confined polymerWe describe a simple Monte Carlo simulation method to calculate the free-energy cost of localizing a single monomer of a polymer confined to a cavity. The localization position is chosen to be on the…James M. Polson, Zakary R. N. McLure·Jun 14, 2019SaveLearn
Computing Committor Functions for the Study of Rare Events Using Deep LearningThe committor function is a central object of study in understanding transitions between metastable states in complex systems. However, computing the committor function for realistic systems at low…Qianxiao Li, Bo Lin, Weiqing Ren·Jun 14, 2019SaveLearn
Finding reaction pathways with optimal atomic index mappingsFinding complex reaction and transformation pathways, involving many intermediate states, is in general not possible on the DFT level with existing simulation methods due to the very large number of…Deb Sankar De, Marco Krummenacher, Bastian Schaefer et al.·Jun 14, 2019SaveLearn