HomPINNs: Homotopy physics-informed neural networks for learning multiple solutions of nonlinear elliptic differential equations

Y Huang, W Hao, G Lin - Computers & Mathematics with Applications, 2022 - Elsevier
Physics-informed neural networks (PINNs) based machine learning is an emerging
framework for solving nonlinear differential equations. However, due to the implicit regularity …

An efficient saddle search method for ordered phase transitions involving translational invariance

G Cui, K Jiang, T Zhou - Computer Physics Communications, 2024 - Elsevier
In this work, we propose an efficient nullspace-preserving saddle search (NPSS) method for
a class of phase transitions involving translational invariance, where the critical states are …

Nucleation of ordered phases in block copolymers

X Cheng, L Lin, WE, P Zhang, AC Shi - Physical review letters, 2010 - APS
Nucleation of various ordered phases in block copolymers is studied by examining the free-
energy landscape within the self-consistent field theory. The minimum energy path (MEP) …

Transition pathways between defect patterns in confined nematic liquid crystals

Y Han, Y Hu, P Zhang, L Zhang - Journal of Computational Physics, 2019 - Elsevier
Confined nematic liquid crystals can admit multiple stable equilibria. These equilibrium
states usually exhibit peculiar defect patterns in order to satisfy the topological constraints …

Simulation of nucleation dynamics at the cylinder-to-lamellar transition in a diblock copolymer melt

RKW Spencer, RA Wickham - Soft Matter, 2013 - pubs.rsc.org
We examine the dynamical evolution of a stable lamellar phase nucleating from a
metastable cylinder phase in a diblock copolymer melt, through large-scale simulations of …

Constrained shrinking dimer dynamics for saddle point search with constraints

J Zhang, Q Du - Journal of Computational Physics, 2012 - Elsevier
In this paper, we study the constrained shrinking dimer dynamics (CSDD) which leads to
numerical procedures for locating saddle points (transition states) associated with an energy …

Effects of RE (La, Ce) on fcc-bcc martensitic transformation of iron via Bain transformation path

H Wang, X Gao, L Xing, T Zhai, M Lv, H Ren, H Wei… - Journal of Rare …, 2022 - Elsevier
The fundamental understanding of the effects of rare earth (RE) on the phase transformation
of Fe-based alloys is essential in the development of advanced RE-containing high strength …

[HTML][HTML] Truncation-based energy weighting string method for efficiently resolving small energy barriers

MF Carilli, KT Delaney, GH Fredrickson - The Journal of chemical …, 2015 - pubs.aip.org
The string method is a useful numerical technique for resolving minimum energy paths in
rare-event barrier-crossing problems. However, when applied to systems with relatively …

Emergence and stability of intermediate open vesicles in disk-to-vesicle transitions

J Li, H Zhang, F Qiu, AC Shi - Physical Review E—Statistical, Nonlinear, and …, 2013 - APS
The transition between two basic structures, a disk and an enclosed vesicle, of a finite
membrane is studied by examining the minimum energy path (MEP) connecting these two …

Diffuse-interface approach to predicting morphologies of critical nucleus and equilibrium structure for cubic to tetragonal transformations

L Zhang, LQ Chen, Q Du - Journal of Computational Physics, 2010 - Elsevier
A cubic to tetragonal transformation leads to simultaneous nucleation and growth of several
orientation variants. The size and morphology of a critical nucleus, comprising of one or …