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First-principles calculations on monolayer 8-{\it Pmmn} borophene are reported to reveal unprecedented electronic properties in a two-dimensional material. Based on a Born effective charge analysis, 8-{\it Pmmn} borophene is the first…

Materials Science · Physics 2016-08-18 Alejandro Lopez-Bezanilla , Peter B. Littlewood

Two-dimensional boron sheets (borophenes) have been successfully synthesized in experiments and are expected to exhibit intriguing transport properties such as the emergence of superconductivity and Dirac Fermions. However, quantitative…

Computational Physics · Physics 2020-07-28 Jin Zhang , Jia Zhang , Cai Cheng , Jian Liu , Johannes Lischner , Feliciano Giustino , Sheng Meng

Phosphorene, a two-dimensional (2D) monolayer of black phosphorus, has attracted considerable theoretical interest, although the experimental realization of monolayer, bilayer, and few-layer flakes has been a significant challenge. Here we…

The recent discovery of borophene, a two-dimensional allotrope of boron, raises many questions about its structure and its chemical and physical properties. Boron has a high chemical affinity to oxygen but little is known about the…

Materials Science · Physics 2020-02-28 Florian M. Arnold , Gotthard Seifert , Jens Kunstmann

Borophene has triggered a surge of interest due to its outstanding properties including mechanical flexibility, polymorphism, and opto-electrical anisotropy. Very recently, a novel semi-hydrogenated borophene, called $\alpha'$-4H, was…

A single-crystal sheet of graphene is synthesized on the low-symmetry substrate Ir(110) by thermal decomposition of C$_2$H$_4$ at 1500 K. Using scanning tunneling microscopy, low-energy electron diffraction, angle-resolved photoemission…

Two-dimensional (2D) boron-based materials have gained increasing interest due to their exceptional physicochemical properties and potential technological applications. In this way, borospherenes, a 2D Boron-based fullerene-like lattice…

Since the first realization of borophene on Ag(111), two-dimensional (2D) boron nanomaterials have attracted significant interest due to their polymorphic diversity and potential for hosting solid-state quantum phenomena. Here, we use…

Materials Science · Physics 2025-07-16 Hui Li , Qiyuan Ruan , Cataldo Lamarca , Albert Tsui , Boris I. Yakobson , Mark C. Hersam

Heterostructures involving two-dimensional (2D) transition metal dichalcogenides and other materials such as graphene have a strong potential to be the fundamental building block of many electronic and opto-electronic applications. The…

The 8-Pmmn borophene, a boron analogue of graphene, hosts tilted and anisotropic massless Dirac fermion quasiparticles owing to the presence of the distorted graphene-like sublattice. First-principles calculations show that the stacked…

We report on a modified transfer technique for atomically thin materials integrated onto microelectromechanical systems (MEMS) for studying strain physics and creating strain-based devices. Our method tolerates the non-planar structures and…

We demonstrate how self-assembled monolayers of aromatic molecules on copper substrates can be converted into high-quality single-layer graphene using low-energy electron irradiation and subsequent annealing. We characterize this…

Two-dimensional boron (borophene) is featured by its structural polymorphs and distinct in-plane anisotropy, opening opportunities to achieve tailored electronic properties by intermixing different phases. Here, using scanning tunneling…

Materials Science · Physics 2019-04-23 Longjuan Kong , Liren Liu , Lan Chen , Qing Zhong , Peng Cheng , Hui Li , Zhuhua Zhang , Kehui Wu

Recent experimental advances for the fabrication of various borophene sheets introduced new structures with a wide prospect of applications. Borophene is the boron atoms analogue of graphene. Borophene exhibits various structural polymorphs…

Materials Science · Physics 2017-04-17 B Mortazavi , O Rahaman , A Dianat , T Rabczuk

Graphene, a monolayer of carbon atoms packed into a two-dimensional crystal structure, attracted intense attention owing to its unique structure and optical, electronic properties. Recent advances in chemical vapor deposition (CVD) have led…

Materials Science · Physics 2020-10-23 Yu-Hao Deng

Using field-emission resonance spectroscopy with an ultrahigh vacuum scanning tunneling microscope, we reveal Stark-shifted image-potential states of the v_1/6 and v_1/5 borophene polymorphs on Ag(111) with long lifetimes, suggesting high…

Materials Science · Physics 2021-01-27 Xiaolong Liu , Luqing Wang , Boris I. Yakobson , Mark C. Hersam

We show that by using an original method, bulk graphite can be bonded onto borosilicate glass or potentially any insulating substrate with ionic conductivity and then cleaved off to leave single or few layer graphene on the substrate,…

Materials Science · Physics 2009-04-06 Abhay Shukla , Rakesh Kumar , Javed Mazher , Adrian Balan

Borophene (two-dimensional boron sheet) is a new type of two-dimensional material, which was recently grown successfully on single crystal Ag substrates. In this paper, we investigate the electronic structure and bonding characteristics of…

Mesoscale and Nanoscale Physics · Physics 2016-06-23 Bo Peng , Hao Zhang , Hezhu Shao , Yuanfeng Xu , Rongjun Zhang , Heyuan Zhu

Large-area single-crystal surface structures were successfully prepared on Cu(111) substrate with boron deposition, which is critical for prospective applications. However, the proposed borophene structures do not match the scanning…

Materials Science · Physics 2022-11-22 Xiao-Ji Weng , Jie Bai , Jingyu Hou , Yi Zhu , Li Wang , Penghui Li , Anmin Nie , Bo Xu , Xiang-Feng Zhou , Yongjun Tian

The past decade has witnessed numerous discoveries of two-dimensional (2D) semimetals and insulators, whereas 2D metals are rarely identified. Borophene, a monolayer boron sheet, has recently emerged as a perfect 2D metal with unique…

Materials Science · Physics 2020-09-21 Chao Lian , Shi-Qi Hu , Jin Zhang , Cai Cheng , Zhe Yuan , Shiwu Gao , Sheng Meng