[22p-C102-1~16] 22.1 Joint Session M "Phonon Engineering"

▼ [22p-C102-10] Length-dependent Surface Phonon-Polaritons thermal conduction up to 500K

〇(P)Yunhui WU¹, Jose ORDONEZ-MIRANDA^1,2, Laurent JALABERT^1,2, Roman ANUFRIEV¹, Sebastian VOLZ^1,2, Masahiro NOMURA^1,2 (1.IIS Univ. of Tokyo, 2.LIMMS Univ. of Tokyo)

Keywords:thin film, 3 omega, thermal conductivity

Efficient heat dissipation in micro/nano-electronics requires long-distance propagation of heat carriers operated above room temperature. However, thermal phonons, the primary heat carriers in dielectric materials, dissipate the thermal energy after just a few hundred nanometers. As novel heat carriers, surface phonon polaritons (SPhPs) generated from the hybridization of the optical phonons and the photons and propagates quasi-ballistically in the range of hundreds of micrometers. Here, we conduct a 3ω measurement of SiN suspended submicron films to investigate the length-dependent transport by SPhPs. Moreover, we demonstrated solid 3ω measurement up to 500 K in nanofilms.