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We have developed the combination of an etching and deposition technique that enables the fabrication of locally gated graphene nanostructures of arbitrary design. Employing this method, we have fabricated graphene nanoconstrictions with…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Barbaros Özyilmaz , Pablo Jarillo-Herrero , Dmitri Efetov , Philip Kim

Proper design and manufacturing thermal bridges based on molecular junctions at the contact between graphene platelets or other thermally conductive nanoparticles would provide a fascinating way to produce efficient heat transport networks…

Materials Science · Physics 2017-11-07 Alessandro Di Pierro , Guido Saracco , Alberto Fina

Here we theoretically show, by designing and manipulating spatially inhomogeneous, non-uniform conductivity patterns across a single flake of graphene, that this single-atom-layered material can serve as a "one-atom-thick" platform for…

Optics · Physics 2011-01-20 Ashkan Vakil , Nader Engheta

The proximity effect opens ways to transfer properties from one material into another and is especially important in two-dimensional materials. In van der Waals heterostructures, transition metal dichalcogenides (TMD) can be used to enhance…

Mesoscale and Nanoscale Physics · Physics 2020-08-10 Franz Herling , C. K. Safeer , Josep Ingla-Aynés , Nerea Ontoso , Luis E. Hueso , Fèlix Casanova

The electronic quality of two-dimensional systems is crucial when exploring quantum transport phenomena. In semiconductor heterostructures, decades of optimization have yielded record-quality two-dimensional gases with transport and quantum…

We investigate the proximity spin-orbit and exchange couplings in ABA and ABC trilayer graphene encapsulated within monolayers of semiconducting transition-metal dichalcogenides and the ferromagnetic semiconductor Cr$_2$Ge$_2$Te$_6$.…

Mesoscale and Nanoscale Physics · Physics 2022-03-22 Klaus Zollner , Martin Gmitra , Jaroslav Fabian

Van der Waals (vdW) heterostructures are receiving great attentions due to their intriguing properties and potentials in many research fields. The flow of charge carriers in vdW heterostructures can be efficiently rectified by the…

Mesoscale and Nanoscale Physics · Physics 2017-04-06 Yang Tan , Xiaobiao Liu , Zhiliang He , Yanran Liu , Mingwen Zhao , Han Zhang , Feng Chen

In this minireview, we explore the main features and the prospect of plasmonics with two-dimensional semiconductors. Plasmonic modes in each class of van der Waals semiconductors have their own peculiarities, along with potential…

Mesoscale and Nanoscale Physics · Physics 2019-04-02 Amit Agarwal , Miriam S. Vitiello , Leonardo Viti , Anna Cupolillo , Antonio Politano

In this paper, we propose van del Waals heterostructure-based thermionic devices for the applications in cooling and power generation in the temperature range of 300 to 400 K. By using two-dimensional materials of low cross-plane thermal…

Mesoscale and Nanoscale Physics · Physics 2015-09-07 Shi-Jun Liang , Lay Kee Ang

Research on graphene and other two-dimensional atomic crystals is intense and likely to remain one of the hottest topics in condensed matter physics and materials science for many years. Looking beyond this field, isolated atomic planes can…

Materials Science · Physics 2013-07-26 A. K. Geim , I. V. Grigorieva

It is promising to apply quantum-mechanically confined graphene systems in field-effect transistors. High stability, superior performance, and large-scale integration are the main challenges facing the practical application of graphene…

Mesoscale and Nanoscale Physics · Physics 2012-01-04 Liang Feng Huang , Zhi Zeng

Poor electrical conductivity and large volume expansion during repeated charge and discharge is what has characterized many battery electrode materials in current use. This has led to 2D materials, specifically multi-layered 2D systems,…

Materials Science · Physics 2020-05-14 Gladys King'ori , Cecil N M Ouma , Abshiek Mishra , George O Amolo , Nicholas Makau

Three-dimensional epitaxial heterostructures are based on covalently-bonded interfaces, whereas those from 2-dimensional (2D) materials exhibit van der Waals interactions. Under the right conditions, however, material structures with mixed…

Magnetic traps for cold atoms have become a powerful tool of cold atom physics and condense matter research. The traps on superconducting chips allow one to increase the trapped atom life- and coherence time by decreasing the thermal noise…

Superconductivity · Physics 2015-06-19 Vladimir Sokolovsky , Leonid Prigozhin , John W. Barrett

The advent of graphene and other two-dimensional van der Waals materials, with their unique electrical, optical, and thermal properties, has resulted in tremendous progress for fundamental science. Recent developments suggest that taking…

Mesoscale and Nanoscale Physics · Physics 2022-06-27 Alexander A. Balandin , Fariborz Kargar , Tina T. Salguero , Roger K. Lake

This work presents a systematic review of the feature-rich essential properties in graphene-related systems using the first-principles method. The geometric and electronic properties are greatly diversified by the number of layers, the…

Chemical Physics · Physics 2017-02-14 Ngoc Thanh Thuy Tran , Shih-Yang Lin , Chiun-Yan Lin , Ming-Fa Lin

Van der Waals heterostructures display a rich variety of unique electronic properties. To identify novel transport mechanisms, nonlocal measurements have been widely used, wherein a voltage is measured at contacts placed far away from the…

Research on two-dimensional materials has expanded over the past two decades to become a central theme in condensed matter research today. Significant advances have been made in the synthesis and subsequent reassembly of these materials…

Local curvature, or bending, of a graphene sheet is known to increase the chemical reactivity presenting an opportunity for templated chemical functionalization. Using first principles calculations based on density functional theory (DFT)…

Materials Science · Physics 2015-08-12 Jesper Toft Rasmussen , Tue Gunst , Peter Bøggild , Antti-Pekka Jauho , Mads Brandbyge

Studies of the structural, electronic, and optical characteristics of the interfaces between graphene and ZnO polar surfaces is carried out using first-principles simulations. At the interface, a strong van der Waals force is present, and…

Materials Science · Physics 2023-05-23 H. D. Etea , K. N. Nigussa