[16a-Z32-1~10] 22.1 Joint Session M "Phonon Engineering"

▼ [16a-Z32-9] Experimental Observation of Thermal Transport of Surface Phonon-Polaritons over Hundreds Micrometers

〇(P)Yunhui WU¹, Jose ORDONEZ-MIRANDA^2,3, Laurent JALABERT^1,3, Saeko TACHIKAWA¹, Roman ANUFRIEV¹, Sebastian VOLZ^1,3, Masahiro NOMURA¹ (1.IIS Univ. of Tokyo, 2.Inst. Pprime France, 3.LIMMS Univ. of Tokyo)

Keywords:Surface Phonon Polaritons, dielectric membrane, thermal conduction

At nanoscale, enhancing heat propagating distance attracts intensive attentions for improving the thermal performance in micro- and nanoelectronics. However, the major heat carriers, phonons, propagate ballistically shorter than one micrometer above room temperature. To compensate this limited propagation, we propose a novel heat carrier, surface phonon polariton (SPhP), which generates from the hybridation of the optical phonons and the photons and propagates in the range of a few hundred micrometers. Here, we conduct a 3ω measurement of SiN suspended submicron films to investigate the thermal transport by SPhP in hundreds micrometers range.