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We have studied the thermal properties of bended graphene nanoribbons (GNRs) using nonequilibrium molecular dynamics simulations. The thermal conductivity of bended GNRs shows a non-monotonous relationship with the bending angle, due to the…

介观与纳米尺度物理 · 物理学 2012-03-01 M. D. Han , L. Miao , J. Mei , J. J. Jiang

We present systematic thermal conductivity measurements of suspended thin graphite ribbons, 234-527 nm thick, using a four-probe 3-omega method. Unlike recent reports of phonon hydrodynamics and exceptionally high thermal conductivity in…

介观与纳米尺度物理 · 物理学 2025-09-16 Wonjae Jeon , Yu Pei , Xun Li , Lucas Lindsay , Sangyeop Lee , Renkun Chen

State-of-the-art fabrication and characterization techniques have been employed to measure the thermal conductivity of suspended, single-crystalline MoS2 and MoS2/hBN heterostructures. Two-laser Raman scattering thermometry was used…

We show that the local temperature dependence of thermalized electron and phonon populations along metallic carbon nanotubes is the main reason behind this non-linear transport characteristics in the high bias regime. Our model that…

介观与纳米尺度物理 · 物理学 2009-11-11 M. A. Kuroda , J. -P. Leburton

Monolayer hexagonal boron nitride is a prototypical planar 2-dimensional system material and has been the subject of many investigations of its exceptional vibrational, spectroscopic and transport properties. The lattice thermal…

The electrical evaluation of the crystallinity of hexagonal boron nitride (h-BN) is still limited to the measurement of dielectric breakdown strength, in spite of its importance as the substrate for 2-dimensional van der Waals…

材料科学 · 物理学 2018-01-29 Y. Hattori , T. Taniguchi , K. Watanabe , K. Nagashio

Interlayer electron transport through a graphene / hexagonal boron-nitride (h-BN) / graphene heterostructure is strongly affected by the misorientation angle $\theta$ of the h-BN with respect to the graphene layers with different physical…

Large hexagonal boron nitride (hBN) single-layer islands of high crystalline quality were grown on Ir(111) via chemical vapor deposition (CVD) and have been studied with low-energy electron microscopy (LEEM). Two types of hBN islands have…

介观与纳米尺度物理 · 物理学 2017-06-02 Marin Petrović , Ulrich Hagemann , Michael Horn-von Hoegen , Frank-J. Meyer zu Heringdorf

We design a hybrid graphene/hexagonal boron nitride superlattice monolayer and investigate its thermoelectric properties using density functional theory and Boltzmann transport equations with the relaxation time accurately treated by…

材料科学 · 物理学 2019-05-31 Zizhen Zhou , Huijun Liu , Dengdong Fan , Guohua Cao

Hexagonal boron nitride (h-BN) is a 2D, wide band-gap semiconductor that has recently been shown to display bright room-temperature emission in the visible region, sparking immense interest in the material for use in quantum applications.…

We present electronic transport measurements of single- and bilayer graphene on commercially available hexagonal boron nitride. We extract mobilities as high as 125 000 cm^2/V/s at room temperature and 275 000 cm^2/V/s at 4.2 K. The…

介观与纳米尺度物理 · 物理学 2015-05-30 P. J. Zomer , S. P. Dash , N. Tombros , B. J. van Wees

The production of high-quality hexagonal boron nitride (h-BN) is essential for the ultimate performance of two-dimensional (2D) materials-based devices, since it is the key 2D encapsulation material. Here, a decisive guideline is reported…

材料科学 · 物理学 2022-10-14 Adrian Hemmi , Ari Paavo Seitsonen , Thomas Greber , Huanyao Cun

Combining both vertical and in-plane two-dimensional (2D) heterostructures opens up the possibility to create an unprecedented architecture using 2D atomic layer building blocks. The thermal transport properties of such mixed…

材料科学 · 物理学 2020-07-16 Ting Liang , Ping Zhang , Man Zhou , Peng Yuan , Daoguo Yang

We have calculated the temperature profiles for phonon heat transport in a suspended membrane with a radially symmetric heat source in the two extreme cases of either fully ballistic or fully diffusive transport. Theoretical results confirm…

介观与纳米尺度物理 · 物理学 2012-04-03 J. T. Karvonen , T. Kühn , I. J. Maasilta

Producing and manipulating graphene on fab-compatible scale, while maintaining its remarkable carrier mobility, is key to finalize its technological application. We show that a large-scale approach (chemical vapor deposition on Cu followed…

介观与纳米尺度物理 · 物理学 2020-08-24 Sergio Pezzini , Vaidotas Mišeikis , Simona Pace , Francesco Rossella , Kenji Watanabe , Takashi Taniguchi , Camilla Coletti

Chemical and structural diversity present in hexagonal boron nitride ((h-BN) and graphene hybrid nanostructures provide new avenues for tuning various properties for their technological applications. In this paper we investigate the…

材料科学 · 物理学 2015-06-11 Alper Kinaci , Justin B. Haskins , Cem Sevik , Tahir Cagin

The calculation of the Kapitza boundary resistance between dissimilar harmonic solids has since long (Little [Can. J. Phys. 37, 334 (1959)]) suffered from a paradox: this resistance erroneously tends to a finite value in the limit of…

凝聚态物理 · 物理学 2007-05-23 Alec Maassen van den Brink , H. Dekker

The temperature dependence of the transport properties of the metallic phase of a frustrated Hubbard model on the hypercubic lattice at half-filling are calculated. Dynamical mean-field theory, which maps the Hubbard model onto a single…

强关联电子 · 物理学 2009-10-31 Jaime Merino , Ross H. McKenzie

The possibility to control electrokinetic transport through carbon and hexagonal boron nitride (hBN) nanotubes has recently opened new avenues for nanofluidic approaches to face outstanding challenges such as energy production and…

化学物理 · 物理学 2022-02-08 Etienne Mangaud , Marie-Laure Bocquet , Lydéric Bocquet , Benjamin Rotenberg

Employing the density-functional theory with local density approximation, we show that the fully hydrogenated monolayer-hexagonal boron nitride (H$_2$BN) has a direct-band gap of 2.96 eV in the blue-light region while the pristine…

超导电性 · 物理学 2021-10-04 Takat B. Rawal , Ling-Hua Chang , Hao-Dong Liu , Hong-Yan Lu , C. S. Ting