SuperPlanckian Far-Field Phonon-Polaritons

<br/><b>S. Volz</b><br/><i>Laboratory for Integrated Micro Mechatronic Systems, CNRS-IIS, </i><br/><i>The University of Tokyo, Tokyo 153-8505, Japan </i><br/><br/>Recent studies showed that surface phonon-polaritons, i.e. evanescent electromagnetic waves propagating along the surface of polar dielectric materials [1] [2], may potentially serve as novel heat carriers to enhance the thermal performance in micro- and nanoscale devices.<br/>We will expose the significant contribution of these carriers to thermal conductivity in ultra-thin (&lt;100nm) films [3], but also to radiation, yielding SuperPlanckian emission and absorption between surfaces of larger scales (10mm).<br/><br/><b>References</b><br/><br/>[1] D.-Z Chen, A. Narayanaswamy, and G. Chen, Phys. Rev. B <b>72</b>, 155435 (2005).<br/>[2]J. Ordonez-Miranda, L. Tranchant, T. Tokunaga, B. Kim, B Palpant, Y. Chalopin, T. Antoni, and S. Volz, J. Appl. Phys. <b>113</b>, 084311 (2013).<br/>[3] Y. Wu, J. Ordonez-Miranda, S. Gluchko, R. Anufriev, D. De Sousa Meneses, L. Del Campo, S. Volz, and M. Nomura, Science Advances 6(40):eabb4461, (2020).