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In this study, we highlight the potential of strain engineering in graphene/hBN (hexagonal Boron nitride) 2D heterostructures, enabling their use as wide-range light absorbers with significant implications for optoelectronic applications.…

介观与纳米尺度物理 · 物理学 2024-07-17 Priyanka Sinha , Prasanta K. Panigrahi , Bheemalingam Chittari

Graphene-based 2D heterostructures exhibit excellent mechanical and electrical properties, which are expected to exhibit better performances than graphene for nanoelectromechanical pressure sensors. Here, we built the pressure sensor models…

介观与纳米尺度物理 · 物理学 2024-10-14 Quan Liu , Chang He , Jie Ding , Wendong Zhang , Xuge Fan

The incorporation of graphene-related materials as nanofiller can produce multifunctional foams with enhanced specific properties and density reduction. Herein we report on the preparation of microcellular thermoplastic…

Atomically thin boron nitride (BN) nanosheets have many properties desirable for surface enhanced Raman spectroscopy (SERS). BN nanosheets have a strong surface adsorption capability towards airborne hydrocarbon and aromatic molecules. For…

介观与纳米尺度物理 · 物理学 2016-06-24 Qiran Cai , Srikanth Mateti , Kenji Watanabe , Takashi Taniguchi , Shaoming Huang , Ying Chen , Lu Hua Li

Graphene/hBN heterostructures can be considered as one of the basic building blocks for the next-generation optoelectronics mostly owing to the record-high electron mobilities. However, currently, the studies of the intrinsic optical…

The interaction between a graphene layer and a hexagonal Boron Nitride (hBN) substrate induces lateral displacements and strains in the graphene layer. The displacements lead to the appearance of commensurate regions and the existence of an…

介观与纳米尺度物理 · 物理学 2014-09-05 Pablo San-Jose , Ángel Gutiérrez , Mauricio Sturla , Francisco Guinea

The enhanced nonlinear optical response of a one-dimensional (1D) photonic crystal (PC) made from polymers and graphene composites is observed. The graphene PC was fabricated by spin-coating. It shows obvious bandgaps at two wavelengths in…

2D ferroelectrics with robust polarization down to atomic thicknesses provide novel building blocks for functional heterostructures. Experimental reports, however, remain scarce because of the requirement of a layered polar crystal. Here,…

介观与纳米尺度物理 · 物理学 2021-06-04 Kenji Yasuda , Xirui Wang , Kenji Watanabe , Takashi Taniguchi , Pablo Jarillo-Herrero

Graphene has emerged as an ultrafast photonic material for on-chip all-optical modulation. However, its atomic thickness limits its interaction with guided optical modes, which results in a high switching energy per bit or low modulation…

光学 · 物理学 2022-03-29 Mohammed Alaloul , Jacob B. Khurgin

Atomically thin layers of two-dimensional (2D) materials such as graphene, MoS2 and h-BN have immense potential as sensors and electronic devices thanks to their highly desirable electronic, mechanical, optical and heat transport…

介观与纳米尺度物理 · 物理学 2015-09-03 Nicholas D. Kay , Peter D. Tovee , Benjamin J. Robinson , Konstantin S. Novoselov , Oleg V. Kolosov

Using a first-principles total energy methodology, we investigated the properties of graphene-like carbon mono and bilayers, functionalized with nitrogen and boron atoms. The resulting stable structures were explored in terms of their…

材料科学 · 物理学 2019-09-12 B. Ipaves , J. F. Justo , L. V. C. Assali

Increased power density in modern microelectronics has led to thermal management challenges which can cause degradation in performance and reliability. In many high-power electronic devices, the power consumption and heat removal are…

介观与纳米尺度物理 · 物理学 2019-10-01 David B. Brown , Thomas L. Bougher , Xiang Zhang , Pulickel Ajayan , Baratunde A. Cola , Satish Kumar

Graphene possesses a unique combination of physical properties including high carrier mobility and high current density it can sustain. In contrast to bulk metals, graphene does not completely screen the external electrostatic field. In…

应用物理 · 物理学 2024-10-03 Alexander Khitun

We report on the thermal and electrical properties of hybrid epoxy composites with graphene and boron nitride fillers. The thicknesses, lateral dimensions, and aspect ratios of each filler material were intentionally selected for geometric…

A portion of the electromagnetic wave spectrum between $\sim 0.1$ and $\sim 10$ terahertz (THz) suffers from the lack of powerful, effective, easy-to-use and inexpensive emitters, detectors and mixers. We propose a multilayer graphene --…

介观与纳米尺度物理 · 物理学 2015-06-04 S. A. Mikhailov

The current rechargeable battery technologies have a failure in their performance at high pressure and temperature. In this article, we have brought theoretical insights on using boron nitride flakes as a protecting layer for a lithium-ion…

应用物理 · 物理学 2021-02-15 Narjes Kheirabadi , Azizollah Shafiekhani

Hexagonal borocarbonitrides (BCN) are a class of 2D materials, which display excellent catalytic activity for water splitting. Here, we report analysis of thermal stability, phonons and thermal conductivity of BCN monolayers over a wide…

介观与纳米尺度物理 · 物理学 2018-10-17 Himanshu Chakraborty , Santosh Mogurampelly , Vivek K. Yadav , Umesh V. Waghmare , Michael L. Klein

We present an experimental study of spin transport in single layer graphene using atomic sheets of hexagonal boron nitride (h-BN) as a tunnel barrier for spin injection. While h-BN is expected to be favorable for spin injection, previous…

介观与纳米尺度物理 · 物理学 2017-03-31 Simranjeet Singh , Jyoti Katoch , Jinsong Xu , Cheng Tan , Tiancong Zhu , Walid Amamou , James Hone , Roland Kawakami

Encapsulating graphene in hexagonal Boron Nitride has several advantages: the highest mobilities reported to date are achieved in this way, and precise nanostructuring of graphene becomes feasible through the protective hBN layers.…

介观与纳米尺度物理 · 物理学 2021-01-04 Yongping Du , Ning Xu , Xianqing Lin , Antti-Pekka Jauho

Functional nano-templates enable self-assembly of otherwise impossible arrangements of molecules. A particular class of such templates is that of sp2 hybridized single layers of hexagonal boron nitride or carbon (graphene) on metal…

原子与分子团簇 · 物理学 2010-09-28 Haifeng Ma , Mario Thomann , Jeanette Schmidlin , Silvan Roth , Martin Morscher , Thomas Greber