Orientation effects on near-field radiative heat transfer between complex-shaped dielectric particles

The effect of orientation on near-field radiative heat transfer between two complex-shaped superellipsoid particles SiO 2 is presented. under study are 50 nm in radius and variable concavity. Orientation characterized by the degree rotational symmetry two-particle systems, conductance calculated using discrete system Green's function approach to account for all electromagnetic interactions. results reveal that total some orientations can be up twice other when at a center-of-mass separation distance 110 nm. effects not significantly correlated with symmetries but strongly minimum vacuum gap particles. As such, consequence particle topology, more extreme topologies leading continuation larger distances. concave display significant approximately equal 3.9 times radius, while convex 3.2 radius. In contrast previous anisotropic, spheroidal dipole studies, these suggest become negligible volumetric process orientations. This work essential understanding transport have non-regular geometries or may geometrical defects abnormalities.