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Monolayer Molybdenum disulfide (MoS2), a two-dimensional crystal with a direct bandgap, is a promising candidate for 2D nanoelectronic devices complementing graphene. There have been recent attempts to produce MoS2 layers via chemical and…

Materials Science · Physics 2011-11-23 Yongjie Zhan , Zheng Liu , Sina Najmaei , Pulickel M. Ajayan , Jun Lou

Graphene has been attracting great interest because of its distinctive band structure and physical properties. Today, graphene is limited to small sizes because it is produced mostly by exfoliating graphite. We grew large-area graphene…

Bilayer borophene, very recently synthesized on Ag and Cu, possesses extremely flat large surface and excellent conductivity. Besides, the van der Waals gap of bilayer borophene can be intercalated by metal atoms, thereby tailoring the…

Materials Science · Physics 2023-09-07 Yuan Chang , Hongsheng Liu , Jiaxu Liu , Jijun Zhao , Yong-Wei Zhang , Junfeng Gao

We present the successful synthesis of single-atom-thick borophene nanoribbons (BNRs) by self-assembly of boron on Ag(110) surface. The scanning tunneling microscopy (STM) studies reveal high quality BNRs: all the ribbons are along the…

Materials Science · Physics 2017-07-12 Qing Zhong , Longjuan Kong , Jian Gou , Wenbin Li , Shaoxiang Sheng , Shuo Yang , Peng Cheng , Hui Li , Kehui Wu , Lan Chen

2D materials and their monolayers have attracted widespread interest by virtue of their unique electronic and optical properties. In addition to their remarkable physical characteristics, their atomically thin nature enables their…

Graphene monolayer grown by Si evaporation from the 0001 surface of SiC displays a moir\'e pattern of corrugation whose structure is ambiguous: different measurements and theoretical studies show either protruding bumps surrounded by…

Mesoscale and Nanoscale Physics · Physics 2018-04-27 Tommaso Cavallucci , Valentina Tozzini

The success of isolating small flakes of atomically thin layers through mechanical exfoliation has triggered enormous research interest in graphene and other two-dimensional materials. For device applications, however, controlled large-area…

Materials Science · Physics 2014-07-17 Yingnan Liu , Rudresh Ghosh , Di Wu , Ariel Ismach , Rodney Ruoff , Keji Lai

Recent progress in large-area synthesis of monolayer molybdenum disulfide, a new two-dimensional direct-bandgap semiconductor, is paving the way for applications in atomically thin electronics. Little is known, however, about the…

Two-dimensional (2D) indium monoselenide (InSe) has attracted significant attention as a III-VI two-dimensional semiconductor (2D) with a combination of favorable attributes from III-V semiconductors as well as van der Waals 2D transition…

Borophene has recently attracted significant attention as an emerging two-dimensional monoelemental material for refractive index sensing because of its ultra-high surface-to-volume ratio and outstanding surface sensitivity. However,…

Optics · Physics 2022-08-10 Ruda Jian , Shiwen Wu , Bo Zhao , Guoping Xiong

We study the mechanical properties of two-dimensional (2D) boron, borophenes, by first-principles calculations. The recently synthesized borophene with 1/6 concentration of hollow hexagons (HH) is shown to have in-plane modulus C up to 210…

Materials Science · Physics 2017-01-12 Zhuhua Zhang , Yang Yang , Evgeni S. Penev , Boris I. Yakobson

Recent success in synthesizing two-dimensional borophene on silver substrate attracts strong interest in exploring its possible extraordinary physical properties. By using the density functional theory calculations, we show that borophene…

Materials Science · Physics 2016-02-18 Zhenqian Pang , Xin Qian , Ronggui Yang , Yujie Wei

The tribological performance of 2D materials makes them good candidates toward a reduction of friction at the macroscale. Superlubricity has been observed for graphene, MoS\textsubscript{2} and MXenes and hexagonal boron nitride (hBN) is…

We theoretically study the influence of impurity scattering on the electric and thermal transport of borophane layer, a two-dimensional anisotropic Dirac semi-metal with two tilted and anisotropic Dirac cones. In a systematic framework, we…

Mesoscale and Nanoscale Physics · Physics 2019-06-19 Moslem Zare

Although a considerable number of solvent based methodologies have been developed for exfoliating black phosphorus, so far there are no reports on controlled organization of these exfoliated nanosheets on substrates. Here, for the first…

Hydrogen, a simple and magic element, has attracted increasing attention for its effective incorporation within solids and powerful manipulation of electronic states. Here, we show that hydrogenation tackles common problems in…

Mesoscale and Nanoscale Physics · Physics 2023-02-10 Botao Fu , Run-Wu Zhang , Xiaotong Fan , Si Li , Da-Shuai Ma , Cheng-Cheng Liu

The discovery of electric field induced bandgap opening in bilayer graphene opens new door for making semiconducting graphene without aggressive size scaling or using expensive substrates. However, bilayer graphene samples have been limited…

Materials Science · Physics 2010-11-19 Seunghyun Lee , Kyunghoon Lee , Zhaohui Zhong

The two-dimensional layer of molybdenum disulfide (MoS2) has recently attracted much interest due to its direct-gap property and potential applications in optoelectronics and energy harvesting. However, the synthetic approach to obtain high…

Two-dimensional metals, such as graphene, have undergone extensive exploration, with graphene exhibiting a metallic response limited to the infrared spectral range. Overcoming the challenge of extending the electron mobility in…

Mesoscale and Nanoscale Physics · Physics 2025-02-04 Yaser Abdi , Masoud Taleb , Soheil Hajibaba , Mohsen Moayedi , Nahid Talebi

Single layered molybdenum disulfide with a direct bandgap is a promising two-dimensional material that goes beyond graphene for next generation nanoelectronics. Here, we report the controlled vapor phase synthesis of molybdenum disulfide…