Non-Fourier heat transport in nanosystems

G Benenti, D Donadio, S Lepri, R Livi - La Rivista del Nuovo Cimento, 2023 - Springer
Energy transfer in small nano-sized systems can be very different from that in their
macroscopic counterparts due to reduced dimensionality, interaction with surfaces, disorder …

GPUMD: A package for constructing accurate machine-learned potentials and performing highly efficient atomistic simulations

Z Fan, Y Wang, P Ying, K Song, J Wang… - The Journal of …, 2022 - pubs.aip.org
We present our latest advancements of machine-learned potentials (MLPs) based on the
neuroevolution potential (NEP) framework introduced in Fan et al.[Phys. Rev. B 104, 104309 …

Neuroevolution machine learning potentials: Combining high accuracy and low cost in atomistic simulations and application to heat transport

Z Fan, Z Zeng, C Zhang, Y Wang, K Song, H Dong… - Physical Review B, 2021 - APS
We develop a neuroevolution-potential (NEP) framework for generating neural network-
based machine-learning potentials. They are trained using an evolutionary strategy for …

Unlocking More Potentials in Two-Dimensional Space: Disorder Engineering in Two-Dimensional Amorphous Carbon

H Tian, Z Yao, Z Li, J Guo, L Liu - ACS nano, 2023 - ACS Publications
The theory of the nature of glass has been described as the deepest but unsolved problem
in solid state theory. The fundamental understanding of the structural characteristics of …

Quantum-corrected thickness-dependent thermal conductivity in amorphous silicon predicted by machine learning molecular dynamics simulations

Y Wang, Z Fan, P Qian, MA Caro, T Ala-Nissila - Physical Review B, 2023 - APS
Amorphous silicon (a-Si) is an important thermal-management material and also serves as
an ideal playground for studying heat transport in strongly disordered materials. Theoretical …

Homogeneous nonequilibrium molecular dynamics method for heat transport and spectral decomposition with many-body potentials

Z Fan, H Dong, A Harju, T Ala-Nissila - Physical Review B, 2019 - APS
The standard equilibrium Green–Kubo and nonequilibrium molecular dynamics (MD)
methods for computing thermal transport coefficients in solids typically require relatively long …

Equivalence of the equilibrium and the nonequilibrium molecular dynamics methods for thermal conductivity calculations: From bulk to nanowire silicon

H Dong, Z Fan, L Shi, A Harju, T Ala-Nissila - Physical Review B, 2018 - APS
Molecular dynamics (MD) simulations play an important role in studying heat transport in
complex materials. The lattice thermal conductivity can be computed either using the Green …

Deriving phase field crystal theory from dynamical density functional theory: consequences of the approximations

AJ Archer, DJ Ratliff, AM Rucklidge, P Subramanian - Physical Review E, 2019 - APS
Phase field crystal (PFC) theory is extensively used for modeling the phase behavior,
structure, thermodynamics, and other related properties of solids. PFC theory can be derived …

The effects of grain size and fractal porosity on thermal conductivity of nano-grained graphite: A molecular dynamics study

Q Wang, N Gui, X Yang, J Tu, S Jiang - … Journal of Heat and Mass Transfer, 2024 - Elsevier
The thermal conductivity of isotropic graphite is a crucial parameter in mechanical and
nuclear engineering. However, obtaining its value accurately is still difficult, especially under …

Uniform deposition of silver nanowires and graphene oxide by superhydrophilicity for transparent conductive films

DW Fox, AA Schropp, T Joseph, N Azim… - ACS Applied Nano …, 2021 - ACS Publications
Superhydrophilic surfaces were used to achieve a uniform deposition of one-dimensional
(1D) and two-dimensional (2D) nanomaterials for high performance transparent conductive …