Figure 1

Snapshots of the NPs at time $t=0$ (top) and 1 ps after (bottom). The crystalline structure rapidly disappears and amorphous NPs are obtained. The color indicates the work done by the atom under the electrostatic field of the neighboring particle.Reuse & Permissions

Figure 2

Explanation schemes of the calculation of the power dissipated in the NP2 due to the field emitted by the NP1. In the MD computation (above), the power is computed as the work produced by the atomic motions of the NP2 atoms in the potential field generated by the NP1. In the electrostatic calculation (below), each NP is assimilated to one dipole (vectors ${\mathbf{p}}_1$ and ${\mathbf{p}}_2$) situated at the NP centers.Reuse & Permissions

Figure 3

Thermal conductance $G_{12}$ vs distance $d$ between the centers of mass. $R$ corresponds to the nanoparticle radius and $N$ is the number of atoms in each particle. While the MD (data points) and the analytical (thick lines) predictions agree very well when the interparticle distance is larger than the nanoparticle diameter, a deviation appears when $d<4R$. The far-field conductance due to emission and absorption is reported for comparison. The inset highlights the conductance values when the NPs are in contact ( gray data points). Their abscissa correspond to $2R$. The contact conductance is 2 to 3 orders of magnitude lower than the conductance just before contact.Reuse & Permissions