Gradient flow approach to an exponential thin film equation: global existence and latent singularity

Y Gao, JG Liu, XY Lu - ESAIM: Control, Optimisation and Calculus of …, 2019 - esaim-cocv.org
In this work, we study a fourth order exponential equation, ut= Δe− Δu derived from thin film
growth on crystal surface in multiple space dimensions. We use the gradient flow method in …

Global existence and decay to equilibrium for some crystal surface models

R Granero-Belinchón, M Magliocca - arXiv preprint arXiv:1804.09645, 2018 - arxiv.org
In this paper we study the large time behavior of the solutions to the following nonlinear
fourth-order equations $$\partial_t u=\Delta e^{-\Delta u}, $$$$\partial_t u=-u^ 2\Delta^ 2 (u …

Analysis of a continuum theory for broken bond crystal surface models with evaporation and deposition effects

Y Gao, JG Liu, J Lu, JL Marzuola - Nonlinearity, 2020 - iopscience.iop.org
We study a 4th order degenerate parabolic PDE model in one-dimension with a 2nd order
correction modeling the evolution of a crystal surface under the influence of both thermal …

[HTML][HTML] Global strong solution with BV derivatives to singular solid-on-solid model with exponential nonlinearity

Y Gao - Journal of Differential Equations, 2019 - Elsevier
In this work, we consider the one dimensional very singular fourth-order equation for solid-
on-solid model in attachment-detachment-limit regime with exponential nonlinearity …

Boundedness and long-time behavior in a parabolic-elliptic system arising from biological transport networks

B Li - Advances in Nonlinear Analysis, 2024 - degruyter.com
The aim of this article is to consider a three-dimensional Cauchy problem for the parabolic-
elliptic system arising from biological transport networks. For such problem, we first establish …

Existence Theorems for a Crystal Surface Model Involving the -Laplace Operator

X Xu - SIAM Journal on Mathematical Analysis, 2018 - SIAM
The manufacturing of crystal films lies at the heart of modern nanotechnology. How to
accurately predict the motion of a crystal surface is of fundamental importance. Many …

Dynamics of a spatially homogeneous Vicsek model for oriented particles on a plane

MJ Kang, J Morales - Analysis and Applications, 2023 - World Scientific
We consider a spatially homogeneous Kolmogorov–Vicsek model in two dimensions, which
describes the alignment dynamics of self-driven stochastic particles that move on a plane at …

Analytical validation of a continuum model for the evolution of a crystal surface in multiple space dimensions

JG Liu, X Xu - SIAM Journal on Mathematical Analysis, 2017 - SIAM
In this paper we are concerned with the existence of a weak solution to the initial boundary
value problem for the equation ∂u∂t=Δ łeft (Δ u\right)^-3. This problem arises in the …

Strong solutions to a fourth order exponential PDE describing epitaxial growth

BC Price, X Xu - Journal of Differential Equations, 2022 - Elsevier
In this paper we prove the global existence of a strong solution to the initial boundary value
problem for the exponential partial differential equation∂ tu− Δ e− Δ u+ e− Δ u− 1= 0. The …

Maximal monotone operator theory and its applications to thin film equation in epitaxial growth on vicinal surface

Y Gao, JG Liu, XY Lu, X Xu - Calculus of Variations and Partial Differential …, 2018 - Springer
In this work we consider 1 w_t=\left\left (w_ hh+ c_0\right)^-3\right _ hh,\qquad w (0)= w^ 0,
wt= w hh+ c 0-3 hh, w (0)= w 0, which is derived from a thin film equation for epitaxial growth …