Three-body radiation dynamics in systems with anisotropic nanoparticles

Abstract

The time evolution of temperatures of anisotropic nanoparticles in two and three-body systems are simulated for various relative orientations. Nanoparticles are immersed in a thermal bath at constant temperature. It is shown that in two-body systems, the relative orientation of nanoparticles could drastically affect the dynamics of temperature evolution and thermalization time scale. Moreover, in some configurations, the temperature difference in initial state has a minor effect on the dynamics of temperatures. In three-body systems, the orientation of the third nanoparticle influences the temperature dynamics, which allows one to control the thermalization time scales between anisotropic nanoparticles. Also, in addition to previously known contribution of the smallest distance between isotropic nanoparticles on the thermalization time scales, it is shown that the nanoparticles' orientations are more important in some particular arrangements.

Radiative thermal rectification in many-body systems

“…Theoretical developments [6][7][8][9][10][11][12][13][14] and experimental measurements [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] have confirmed the tremendous role played by near-field heat exchanges between solids at subwavelength separation distances and have highlighted the strong potential of this transfer in a wide range of applications such as energy harvesting [30][31][32][33], heat-assisted data recording [34,35], near-field infrared spectroscopy [36,37], and active control of the heat exchange [38][39][40]. More recently, the near-field radiative heat transfer in a set of objects in mutual interaction was also investigated, for instance, considering a distribution of nanoparticles [41][42][43][44][45][46][47][48][49][50][51] and structures with pla...…”

Generalized coupled dipole method for thermal far-field radiation

“…For non-reciprocal media even more interesting many-body effects were demonstrated like persistent heat currents and fluxes [24][25][26][27], giant magnetic resistances [28,29], Hall and anomalous Hall effect [30,31], circular polarized emission and thermal angular momentum and spin [25,32,33] as well as non-reciprocal near-field diodes [34,35] or spin-related directional thermal emission [36]. Of course, also radiative heat transfer between different many-body systems has been studied theoretically for anisotropic systems [37][38][39][40][41], fractal structures [40,41], and lattices [42,43] as well as thermal transport in 1D, 2D, and 3D nanoparticle systems [44][45][46][47] including topological Su-Schriefer-Heeger structures [48]. Predominately, such studies are of theoretical interest, but they can also be relevant for radiative heat transport measurements in particle glasses [49] and other systems.…”

Radiative heat transfer between nanoparticles: Shape dependence and three-body effect

“…Each a) Electronic mail: mnik@znu.ac.ir particle in a many-body system, acts as a scatterer of the radiative energy. As a result, the particles shapes and dielectric functions are main issues, together with their geometric arrangement in the system [41][42][43][44][45][46][47] . The majority of recent studies in heat flux between nanoparticles in three-body systems have focused on heat flux modification by relative position, sizes and orientation of particles.…”