heat transportthermal conductivitykapitza resistancemolecular dynamicsIn this study, we perform non-equilibrium molecular dynamics simulations to investigate phonon heat transport in a two-dimensional superlattice with equal-sized domains of graphene and phagraphene. Effects on conductivity are examined in ...
Because phonons are the main carriers for graphene heat transfer, modifying the dynamic properties of the crystal lattice by isotopes modulates the phonon behavior and alters the thermal properties. Here we demonstrate an artificially controlled texture synthesis of 12C-graphene/13C-graphene ...
The recent boost in research on atom-layered materials such as graphene [7], X-enes (X = Si, Ge, Sn, and so on) [8–11], and transition metal dichalcogenides (TMDCs) [12,13] makes it highly desirable to acquire insights on the microscopic relations of their electronic and ...
Here, using time-resolved photocurrent measurements, we identify an efficient out-of-plane energy transfer channel, where charge carriers in graphene couple to hyperbolic phonon polaritons 17–19 in the encapsulating layered material. This hyperbolic cooling is particularly efficient, giving picosecond ...
T. Electron-phonon heat transfer in monolayer and bilayer graphene. Phys. Rev. B - Condens. Matter Mater. Phys. 81, 1–9 (2010). Article CAS Google Scholar Karvonen, J. T., Taskinen, L. J. & Maasilta, I. J. Observation of disorder-induced weakening of electron-phonon interaction ...
which can be used for heat transfer, heat control and thermal rectification in nano systems [8]. Chenet al[9] studied thermal rectification of asymmetric graphene/h-BN vdW heterostructures by molecular dynamics (MD) simulations. The results showed that the heat flux preferentially flowed in the ...
Density functional perturbation theory for gated two-dimensional heterostructures: theoretical developments and application to flexural phonons in graphene. Phys. Rev. B 96, 075448 (2017). Extension of the density functional perturbation theory (and Boltzmann transport equation) for 2D materials. ADS ...
Phonon hydrodynamics is an effective macroscopic method to study heat transport in dielectric solid, which has a clear and intuitive physical picture, and also an elegant and unified mathematical description. The present work provides a systematic summary of its theoretical foundation, historical line, ...
To validate and to demonstrate the applicability of the theory, we apply it to two systems: a one-dimensional chain of atoms and a graphene nanoribbon. In both cases, we discuss the effect of mass impurities on thermal transport. Acknowledgments This project was supported in part by the U.S...
Both experimental and numerical works in recent years have shown that thermal conductivity due to phonons in low dimensional nano scale systems like nanotube, nanowire, polymer chain, graphene, and other 2D materials are size dependent. In this talk, I will present a general theoretical understanding...