In-plane interfacial phonon transport through multi-layer thin films by theoretical analyses and Monte Carlo simulations

2021 ◽  
Vol 176 ◽  
pp. 121438
Author(s):  
Xin Ran ◽  
Moran Wang
Keyword(s):  
Thin Films ◽  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Phonon Transport ◽  
Theoretical Analyses

scholarly journals Monte Carlo simulations of phonon transport in Si nanowires with constrictions

2015 ◽  
Vol 86 ◽  
pp. 648-655 ◽  
Author(s):  
V. Jean ◽  
S. Fumeron ◽  
K. Termentzidis ◽  
X. Zianni ◽  
D. Lacroix
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Phonon Transport ◽  
Si Nanowires

Domain Analysis and Magnetic Relaxation in Thin Films

1998 ◽  
Vol 09 (06) ◽  
pp. 821-825 ◽  
Author(s):  
Tatiana G. Rappoport ◽  
F. S. de Menezes ◽  
L. C. Sampaio ◽  
M. P. Albuquerque ◽  
F. Mello
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Monte Carlo ◽  
Ising Model ◽  
Monte Carlo Simulations ◽  
Magnetic Relaxation ◽  
Film Plane ◽  
Relative Strength ◽  
Two Dimensional ◽  
Magnetic Domains

We have simulated the magnetic relaxation (M(t)) and the nucleation of magnetic domains in the presence of magnetic field in thin films with anisotropy perpendicular to the film plane. We have used Monte Carlo simulations based on the two-dimensional classical Ising model including the long-range dipole–dipole and Zeeman interactions. Domains nucleated during the magnetic relaxation exhibit very rough interfaces. We analyze the roughness and the M(t) as a function of the relative strength of dipole–dipole and Zeeman terms.

scholarly journals Holographic grating inscription in DR1: DNA-CTMA thin films: the puzzle of time scales

2014 ◽  
Vol 12 (8) ◽  
pp. 886-892 ◽  
Author(s):  
Grzegorz Pawlik ◽  
Wojciech Radosz ◽  
Antoni Mitus ◽  
Jaroslaw Mysliwiec ◽  
Andrzej Miniewicz ◽  
...  
Keyword(s):  
Thin Films ◽  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Temporal Pattern ◽  
Initial Phase ◽  
Complex Dynamics ◽  
Time Interval ◽  
Wave Mixing ◽  
Fitting Procedures ◽  
Two Wave Mixing

AbstractWe study experimentally the dynamics of holographic inscription of gratings in DR1:DNA-CTMA thin films using a degenerate two-wave mixing (DTWM) setup in its initial phase (30 ms) and in a longer time interval (30 s). The temporal pattern of evolution of diffraction efficiency is complex, simple fitting procedures fail to reproduce the data. We point out that the complex dynamics can originate a large span of temporal scales, closely related to the microscale inhomogeneity of local free volume. Some of its hallmarks are found through Monte Carlo simulations.

Analytical Model for Lattice Thermal Conductivity Predictions of Periodic Nanoporous Structures

2016 ◽  
Author(s):  
Qing Hao ◽  
Yue Xiao ◽  
Hongbo Zhao
Keyword(s):  
Thermal Conductivity ◽  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Lattice Thermal Conductivity ◽  
Phonon Transport ◽  
Kinetic Relationship ◽  
Wide Range ◽  
Edge Scattering ◽  
Bulk Phonon ◽  
Nanoporous Structures

Phonon transport within nanoporous bulk materials or thin films is of importance to applications in thermoelectrics, gas sensors, and thermal insulation materials. Considering classical phonon size effects, the lattice thermal conductivity KL can be predicted assuming diffusive pore-edge scattering of phonons and bulk phonon mean free paths. In the kinetic relationship, kL can be computed by modifying the phonon mean free paths with the characteristic length ΛPore of the porous structure. Despite some efforts using the Monte Carlo ray tracing method to extract ΛPore, the resulting KL often diverges from that predicted by phonon Monte Carlo simulations. In this work, the effective ΛPore is extracted by directly comparing the predictions by the kinetic relationship and phonon Monte Carlo simulations. The investigation covers a wide range of period sizes and volumetric porosities. In practice, these ΛPore values can be used for thermal analysis of general nanoporous materials.

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