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Understanding the limits of phononic heat dissipation from a two-dimensional layered material (2DLM) to its hexagonal boron nitride (h-BN) substrate and how it varies with the structure of the 2DLM is important for the design and thermal…

Mesoscale and Nanoscale Physics · Physics 2021-04-19 Zhun-Yong Ong , Gang Zhang , Yong-Wei Zhang

Accurate measurements and physical understanding of thermal boundary resistance (R) of two-dimensional (2D) materials are imperative for effective thermal management of 2D electronics and photonics. In previous studies, heat dissipation…

Applied Physics · Physics 2022-04-15 Weidong Zheng , Connor J. McClellan , Eric Pop , Yee Kan Koh

The development of electronic devices, especially those that involve heterogeneous integration of materials, has led to increased challenges in addressing their thermal operational-temperature demands. The heat flow in these systems is…

Understanding the interfacial electrical properties between metallic electrodes and low dimensional semiconductors is essential for both fundamental science and practical applications. Here we report the observation of thickness reduction…

Mesoscale and Nanoscale Physics · Physics 2015-02-17 Song-Lin Li , K. Komatsu , Shu Nakaharai , Yen-Fu Lin , M. Yamamoto , X. F. Duan , K. Tsukagoshi

SiC is a promising substrate for Si-on-insulator (SOI) wafers for efficient thermal management owing to its high thermal conductivity and large bandgap. However, fabricating a Si device layer on a SiC substrate with a high and uniform…

Materials Science · Physics 2024-06-26 Rulei Guo , Bin Xu , Fengwen Mu , Junichiro Shiomi

The role of interfacial nonidealities and disorder on thermal transport across interfaces is traditionally assumed to add resistance to heat transfer, decreasing the thermal boundary conductance (TBC).$^1$ However, recent computational…

In the modern electronics overheating is one of the major reasons for device failure. Overheating causes irreversible damage to circuit components and can also lead to fire, explosions, and injuries. Accordingly, in the advent of 2D…

Controlling thermal transport is important for a range of devices and technologies, from phase change memories to next-generation electronics. This is especially true in nano-scale devices where thermal transport is altered by the influence…

Thermal properties of molybdenum disulfide (MoS$_2$) have recently attracted attention related to fundamentals of heat propagation in strongly anisotropic materials, and in the context of potential applications to optoelectronics and…

In nano-device applications using 2D van der Waals materials, a heat dissipation through nano-scale interfaces can be a critical issue for optimizing device performances. By using a time-domain thermoreflectance measurement technique, we…

Mesoscale and Nanoscale Physics · Physics 2018-12-07 Young-Gwan Choi , Do-Gyeom Jeong , H. I. Ju , C. J. Roh , Geonhwa Kim , Bongjin Simon Mun , Tae Yun Kim , Sang-Woo Kim , J. S. Lee

In this article, we report the influence of the interfacial roughness on the thermal boundary conductance between two crystals, using molecular dynamics. We show evidence of a transition between two regimes, depending on the interfacial…

Materials Science · Physics 2015-06-23 Samy Merabia , Konstantinos Termentzidis

We measure the thermal time constants of suspended single layer molybdenum disulfide drums by their thermomechanical response to a high-frequency modulated laser. From this measurement the thermal diffusivity of single layer MoS$_2$ is…

Mesoscale and Nanoscale Physics · Physics 2018-12-05 Robin J. Dolleman , David Lloyd , J. Scott Bunch , Herre S. J. van der Zant , Peter G. Steeneken

We have studied the effects of phonon-boundary scattering on the thermal transport in topological Kondo insulator, SmB$_6$. The studies have been performed by using the $3\omega$ method in the temperature range 300K - 3K. We show that the…

Materials Science · Physics 2022-08-03 Narayan Poudel , Daniel J. Murray , Jason R. Jeffries , Krzysztof Gofryk

Contact interface properties are important in determining the performances of devices based on atomically thin two-dimensional (2D) materials, especially those with short channels. Understanding the contact interface is therefore quite…

Materials Science · Physics 2020-05-01 Bo Han , Chen Yang , Xiaolong Xu , Yuehui Li , Ruochen Shi , Kaihui Liu , Haicheng Wang , Yu Ye , Jing Lu , Dapeng Yu , Peng Gao

Controlling thermal transport at the nanoscale is vital for many applications. Previously, it has been shown that this control can be achieved with periodically nanostructured two-dimensional phononic crystals, for the case of suspended…

Mesoscale and Nanoscale Physics · Physics 2024-06-12 Samuli Heiskanen , Tuomas Puurtinen , Ilari J. Maasilta

Engineering thermal transport in two dimensional materials, alloys and heterostructures is critical for the design of next-generation flexible optoelectronic and energy harvesting devices. Direct experimental characterization of lattice…

Materials Science · Physics 2021-02-22 Aravind Krishnamoorthy , Nitish Baradwaj , Aiichiro Nakano , Rajiv K. Kalia , Priya Vashishta

We consider the low-temperature thermal transport properties of the 2D proximity-induced superconducting state formed at the interface between a 3D strong topological insulator (TI) and a d-wave superconductor (dSC). This system is a…

Superconductivity · Physics 2015-10-06 Adam C. Durst

Two-dimensional (2D) topological superconductors are highly desired because they not only offer opportunities for exploring novel exotic quantum physics, but also possesses potential applications in quantum computation. However, there are…

Superconductivity · Physics 2021-03-10 Jing-Yang You , Bo Gu , Gang Su , Yuan Ping Feng

Nanostructured superlattices have been the focus of many researchers due to their physical and manipulatable properties. They aim to find promising materials for new electronic and thermoelectric devices. In the present study, we…

Materials Science · Physics 2021-07-29 Leila Razzaghi , Farhad Khoeini , Ali Rajabpour , Maryam Khalkhali

Recently, there have been increasing interests in phonon thermal transport in low dimensional materials, due to the crucial importance for dissipating and managing heat in micro and nano electronic devices. Significant progresses have been…

Mesoscale and Nanoscale Physics · Physics 2017-01-12 Xiangfan Xu , Jie Chen , Baowen Li