title: Superior thermal conductivity in suspended bilayer hexagonal boron nitride.
abstract: We reported the basal-plane thermal conductivity in exfoliated bilayer hexagonal boron nitride h-BN that was measured using suspended prepatterned microstructures. The h-BN sample suitable for thermal measurements was fabricated by dry-transfer method, whose sample quality, due to less polymer residues on surfaces, is believed to be superior to that of PMMA-mediated samples. The measured room temperature thermal conductivity is around 484 Wm(-1)K(-1)(+141 Wm(-1)K(-1)/ -24 Wm(-1)K(-1)) which exceeds that in bulk h-BN, providing experimental observation of the thickness-dependent thermal conductivity in suspended few-layer h-BN.
authors.affiliation: Center for Phononics and Thermal Energy Science, School of Physics Science and Engineering, Tongji University, 200092 Shanghai, China.
authors.forename: Chengru
authors.initials: C
authors.lastname: Wang
authors.affiliation: Center for Phononics and Thermal Energy Science, School of Physics Science and Engineering, Tongji University, 200092 Shanghai, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Guo
authors.affiliation: Center for Phononics and Thermal Energy Science, School of Physics Science and Engineering, Tongji University, 200092 Shanghai, China.
authors.forename: Lan
authors.initials: L
authors.lastname: Dong
authors.affiliation: Center for Phononics and Thermal Energy Science, School of Physics Science and Engineering, Tongji University, 200092 Shanghai, China.
authors.forename: Adili
authors.initials: A
authors.lastname: Aiyiti
authors.affiliation: Center for Phononics and Thermal Energy Science, School of Physics Science and Engineering, Tongji University, 200092 Shanghai, China.|Institute of Advanced Studies, Tongji University, 200092 Shanghai, China.
authors.forename: Xiangfan
authors.initials: X
authors.lastname: Xu
authors.affiliation: Department of Mechanical Engineering, University of Colorado Boulder, CO 80309-0427, USA.
authors.forename: Baowen
authors.initials: B
authors.lastname: Li