@article{HenkelJoulain2006,
  author    = {Henkel, Carsten and Joulain, Karl},
  title     = {Electromagnetic field correlations near a surface with a nonlocal optical response},
  issn      = {0946-2171},
  doi       = {10.1007/s00340-006-2219-9},
  year      = {2006},
  abstract  = {The coherence length of the thermal electromagnetic field near a planar surface has a minimum value related to the nonlocal dielectric response of the material. We perform two model calculations of the electric energy density and the field's degree of spatial coherence. Above a polar crystal, the lattice constant gives the minimum coherence length. It also gives the upper limit to the near field energy density, cutting off its 1/z(3) divergence. Near an electron plasma described by the semiclassical Lindhard dielectric function, the corresponding length scale is fixed by plasma screening to the Thomas-Fermi length. The electron mean free path, however, sets a larger scale where significant deviations from the local description are visible},
  language  = {en}
}
@article{HenkelJoulain2005,
  author    = {Henkel, Carsten and Joulain, Karl},
  title     = {Casimir force between designed materials : what is possible and what not},
  issn      = {0295-5075},
  year      = {2005},
  abstract  = {We establish strict upper limits for the Casimir interaction between multilayered structures of arbitrary dielectric or diamagnetic materials. We discuss the appearance of different power laws due to frequency-dependent material constants. Simple analytical expressions are in good agreement with numerical calculations based on Lifshitz theory. We discuss the improvements required for current ( meta) materials to achieve a repulsive Casimir force},
  language  = {en}
}
@article{HenkelJoulainMuletetal.2004,
  author    = {Henkel, Carsten and Joulain, Karl and Mulet, J. P. and Greffet, Jean-Jacques},
  title     = {Coupled surface polaritons and the Casimir force},
  year      = {2004},
  abstract  = {The Casimir force between metallic plates made of realistic materials is evaluated for distances in the nanometer range. A spectrum over real frequencies is introduced and shows narrow peaks due to surface resonances (plasmon polaritons or phonon polaritons) that are coupled across the vacuum gap. We demonstrate that the Casimir force originates from the attraction (repulsion) due to the corresponding symmetric (antisymmetric) eigenmodes, respectively. This picture is used to derive a simple analytical estimate of the Casimir force at short distances. We recover the result known for Drude metals without absorption and compute the correction for weakly absorbing materials},
  language  = {en}
}
@article{HenkelJoulainMuletetal.2002,
  author    = {Henkel, Carsten and Joulain, Karl and Mulet, J. P. and Greffet, Jean-Jacques},
  title     = {Radiation forces on small particles in thermal near fields},
  year      = {2002},
  abstract  = {We study the optical forces due to the radiation of a thermal source. Our model consists of a particle modelled by a dipole above a half-space at temperature T. The fluctuating fields are computed using the Lifshitz model. We find two contributions to the force: a repulsive "wind" component and a dispersive force mainly due to the contribution of thermally excited surface waves. It is found that for SIC material, the latter is repulsive in the very near field. The usual van der Waals force is larger by a factor of approximately ten for submicron size particles.},
  language  = {en}
}
@article{GreffetCarminatiJoulainetal.2003,
  author    = {Greffet, Jean-Jacques and Carminati, R{\´e}mi and Joulain, Karl and Mulet, J. P. and Henkel, Carsten and Mainguy, S.},
  title     = {Coherent spontaneous emission of light due to surface waves},
  issn      = {0303-4216},
  year      = {2003},
  language  = {en}
}
@article{GreffetCarminatiJoulainetal.2001,
  author    = {Greffet, Jean-Jacques and Carminati, R{\´e}mi and Joulain, Karl and Mulet, J. P. and Henkel, Carsten},
  title     = {Coherence properties of thermal near fields : implications for nanometer-scale radiative transfer},
  year      = {2001},
  abstract  = {With the recent development of local (optical and thermal) probe microscopy and the advent of nanotechnology, it seems necessary to revisit the old subject of coherence properies of thermal sources of light. Concerning temporal coherence, we show that thermal sources may produce quasi-monochromatic near fields. In light of this result, the possibility of perfoming near-field solid-state spectroscopy and of designing near-field infrared sources is discussed. The problem of radiative transfer between two thermal sources held at subwavelength distance is studied. The radiative flux may be enhanced by several orders of magnitude due to the excitation of resonant surface waves, and this may occur at particular frequencies. Finally, we study the spatial coherence of thermal sources and the substantial influence of the near field. Surface waves may induce long-range spatial correlation, on a scale much larger than the wavelength. Conversely, quasi-static contributions, as well as skin-layer currents, induce arbitary small correlations. With the recent development of local (optical and thermal) probe microscopy and the advent of nanotechnology, it seems necessary to revisit the old subject of coherence of thermal fields.},
  language  = {en}
}
@article{HenkelJoulainCarminatietal.2000,
  author    = {Henkel, Carsten and Joulain, Karl and Carminati, R{\´e}mi and Greffet, Jean-Jacques},
  title     = {Spatial coherence of thermal near fields},
  year      = {2000},
  abstract  = {We analyze the spatial coherence of the electromagnetic field emitted by a half-space at temperature T close to the interface. An asymptotic analysis allows to identify three different contributions to the cross-spectral density tensor in the near-field regime. It is shown that the coherence length can be either much larger or much shorter than the wavelength depending on the dominant contribution.},
  language  = {en}
}
@article{BenAbdallahMessinaBiehsetal.2013,
  author    = {Ben-Abdallah, Philippe and Messina, Riccardo and Biehs, Svend-Age and Tschikin, Maria and Joulain, Karl and Henkel, Carsten},
  title     = {Heat superdiffusion in plasmonic nanostructure networks},
  series = {Physical review letters},
  volume    = {111},
  journal   = {Physical review letters},
  number    = {17},
  publisher = {American Physical Society},
  address   = {College Park},
  issn      = {0031-9007},
  doi       = {10.1103/PhysRevLett.111.174301},
  pages     = {5},
  year      = {2013},
  abstract  = {The heat transport mediated by near-field interactions in networks of plasmonic nanostructures is shown to be analogous to a generalized random walk process. The existence of superdiffusive regimes is demonstrated both in linear ordered chains and in three-dimensional random networks by analyzing the asymptotic behavior of the corresponding probability distribution function. We show that the spread of heat in these networks is described by a type of Levy flight. The presence of such anomalous heat-transport regimes in plasmonic networks opens the way to the design of a new generation of composite materials able to transport heat faster than the normal diffusion process in solids.},
  language  = {en}
}
@article{JoulainBenAbdallahChapuisetal.2014,
  author    = {Joulain, Karl and Ben-Abdallah, Philippe and Chapuis, Pierre-Olivier and De Wilde, Y. and Babuty, A. and Henkel, Carsten},
  title     = {Strong tip-sample coupling in thermal radiation scanning tunneling microscopy},
  series = {Journal of quantitative spectroscopy \& radiative transfer},
  volume    = {136},
  journal   = {Journal of quantitative spectroscopy \& radiative transfer},
  publisher = {Elsevier},
  address   = {Oxford},
  issn      = {0022-4073},
  doi       = {10.1016/j.jqsrt.2013.12.006},
  pages     = {1 -- 15},
  year      = {2014},
  language  = {en}
}
@article{JoulainHenkelGreffet2006,
  author    = {Joulain, Karl and Henkel, Carsten and Greffet, Jean-Jacques},
  title     = {Influence of the dependence in temperature of the optical properties of materials on the Casimir force},
  series = {Journal de physique IV},
  volume    = {135},
  journal   = {Journal de physique IV},
  publisher = {EDP Sciences},
  address   = {Les Ulis},
  issn      = {1155-4339},
  doi       = {10.1051/jp4:2006135021},
  pages     = {113 -- 114},
  year      = {2006},
  abstract  = {Nous {\´e}valuons la force de Casimir entre deux surfaces planes m{\´e}talliques constitu{\´e}es d'argent. Nous prenons, pour effectuer cette {\´e}valuation, des propri{\´e}t{\´e}s optiques de l'argent {\`a} diff{\´e}rentes temp{\´e}ratures [1]. Nous montrons que cette d{\´e}pendance en temp{\´e}rature modifie la force de Casimir (de 0.2\%) y compris {\`a} des distances inf{\´e}rieures {\`a} la longueur d'onde thermique.},
  language  = {fr}
}