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Florian Herz on Muck Rack

Florian Herz

As seen in: arXiv, Physical Review B
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Articles by Florian Herz

Condensed Matter > Mesoscale and Nanoscale Physics

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By Mauricio Gomez, Florian Herz, Riccardo Messina
| arXiv
We develop a nonlocal hydrodynamic theory of radiative heat transport in many-body systems by coarse graining their microscopic electrodynamic interactions. Long-range radiative exchange naturally generates a spatially nonlocal constitutive relation in which the heat current at a given position depends on temperature gradients over an extended region, while energy conservation retains its local conservative form.
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Tomography of near-field radiative heat exchange between mesoscopic bodies immersed in a thermal bath

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By Florian Herz, Laboratoire Charles Fabry, Institut d'Optique
| Physical Review B
A tomographic study of near-field radiative heat exchanges between a mesoscopic object and a substrate immersed in a thermal bath is carried out within the theoretical framework of fluctuational electrodynamics. By using the discrete-dipole-approximation method, we compute the power density distribution for radiative exchanges and highlight the major role played by many-body interactions in these transfers.
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Fluctuations of the energy density and intensity for arbitrary objects in an arbitrary environment

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By Laboratoire Charles Fabry, Institut d'Optique, Florian Herz
| Physical Review B
I apply the scattering approach within the framework of macroscopic quantum electrodynamics to derive the variances and mean values of the energy density and intensity for a system of an arbitrary object in an arbitrary environment. To evaluate the temporal bunching character of the energy density and intensity, I determine the ratio of their variances with respect to their mean values. I explicitly evaluate these ratios for the cases of vacuum, a half-space in vacuum, and a sphere in vacuum.
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