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Experimental and theoretical studies of manganese deposition on graphene/Ni(111) shows that a thin ferromagnetic Ni3Mn layer, which is protected by the graphene overlayer, is formed upon Mn intercalation. The electronic bands of graphene…

The ability to manufacture tailored graphene nanostructures is a key factor to fully exploit its enormous technological potential. We have investigated nanostructures created in graphene by swift heavy ion induced folding. For our…

Superconductivity in graphene has been highly sought after for its promise in various device applications and for general scientific interest. Ironically, the simple electronic structure of graphene, which is responsible for novel quantum…

超导电性 · 物理学 2015-08-28 Anand P. Tiwari , Soohyeon Shin , Eunhee Hwang , Soon-Gil Jung , Tuson Park , Hyoyoung Lee

We show that it is possible to prepare and identify ultra--thin sheets of graphene on crystalline substrates such as SrTiO$_3$, TiO$_2$, Al$_2$O$_3$ and CaF$_2$ by standard techniques (mechanical exfoliation, optical and atomic force…

材料科学 · 物理学 2009-11-06 S. Akcoeltekin , M. El Kharrazi , B. Koehler , A. Lorke , M. Schleberger

Electropolymerization plays a critical role in the electrochemical systems. In this chapter, we address such role within the context of interplay between kinetics and energetics. The trains of chin radical reactions leads to the formation…

化学物理 · 物理学 2019-04-18 Asghar Aryanfar , Agustin J. Colussi , Laleh M. Kasmaee , Michael R. Hoffmann

A single graphene layer placed between two parallel Ni(111) surfaces screens the strong attractive force and results in a significant reduction of adhesion and sliding friction. When two graphene layers are inserted, each graphene is…

介观与纳米尺度物理 · 物理学 2013-05-24 S. Cahangirov , S. Ciraci , V. Ongun Özçelik

In this paper, four easy-to-fabricate graphene-based Si waveguide modulators are presented to overcome the strong polarization dependency of graphene-based modulators. The modulation features of two newly proposed structures, i.e. two…

光学 · 物理学 2020-04-10 Mohamad Najafi Hajivar , Mahmood Hosseini-Farzad

Electropolishing has found wide application as the final surface treatment of metal products in mechanical engineering and instrumentation, medicine and reflective concentrators for PV cells. It was found that electropolishing (EP) not only…

材料科学 · 物理学 2021-06-28 A. Brusov , G. Orr , M. Azulay , G. Golan

Graphene bilayer systems are known to exhibit a band gap when the layer symmetry is broken, by applying a perpendicular electric field. The resulting band structure resembles that of a conventional semiconductor with a parabolic dispersion.…

介观与纳米尺度物理 · 物理学 2015-07-03 Søren Schou Gregersen , Jesper Goor Pedersen , Stephen R. Power , Antti-Pekka Jauho

Graphene has exceptional optical, mechanical and electrical properties, making it an emerging material for novel optoelectronics, photonics and for flexible transparent electrode applications. However, the relatively high sheet resistance…

介观与纳米尺度物理 · 物理学 2013-02-06 Guang-Xin Ni , Yi Zheng , Sukang Bae , Chin Yaw Tan , Orhan Kahya , Jing Wu , Byung Hee Hong , Kui Yao , Barbaros Özyilmaz

Quantum confinement endows two-dimensional (2D) layered materials with exceptional physics and novel properties compared to their bulk counterparts. Although certain two- and few-layer configurations of graphene have been realized and…

We demonstrate a novel in situ polymerization technique to develop localized polymer coatings on the surface of dispersed pristine graphene sheets. Graphene sheets show great promise as strong, conductive fillers in polymer nanocomposites;…

软凝聚态物质 · 物理学 2011-04-29 Sriya Das , Ahmed S. Wajid , John L. Shelburne , Yen-Chi Liao , Micah J. Green

The electronic bands of twisted bilayer graphene (TBLG) with a large-period moir\'e superlattice fracture to form narrow Bloch minibands that are spectrally isolated by forbidden energy gaps from remote dispersive bands. When these gaps are…

介观与纳米尺度物理 · 物理学 2020-10-28 Vo Tien Phong , E. J. Mele

Controlled modification of graphene properties is essential for its proposed electronic applications. Here we describe a possibility of tuning electrical properties of graphene via electron beam irradiation. We show that by controlling the…

材料科学 · 物理学 2015-10-28 G. Liu , D. Teweldebrhan , A. A. Balandin

We show the merits of plasma enhanced atomic layer deposition (PEALD) of catalytic substrate for chemical vapour deposition (CVD) graphene growth. The high quality multilayer graphene (MLG) on molybdenum carbide ($MoC_{x}$) thin film…

应用物理 · 物理学 2019-12-06 Eldad Grady , W. M. M. Kessels , Ageeth A. Bol

The changes of surface structure, induced by electron beam irradiation (EBI) on the surface of poly(aryl-ether-ether-ketone) (PEEK), were investigated by using a range of various experimental techniques, such as tribology, Raman, AFM, NMR,…

材料科学 · 物理学 2021-12-07 Zh. Alsar , B. Rakhadilov , N. Almasov , N. Serik , C. Spitas , K. Kostas , Z. Insepov

In this paper, we propose a novel electromagnetic (EM) cloaking structure that consists of two annular layers between three spherical shells and model its performance numerically and theoretically by using a Global and Local EM field (GL)…

光学 · 物理学 2017-01-02 Ganquan Xie , Jianhua Li , Feng Xie , Lee Xie

High surface area graphene sheets were obtained by electrochemical exfoliation of graphite in an acid media under constant potential conditions. Filtration and centrifugation processes played an important role in order to obtain stable…

材料科学 · 物理学 2016-06-22 M. Hurtado-Morales , M. Ortiz , C. Acuna , H. C. Nerl , V. Nicolosi , Y. Hernandez

Gratings enable dispersive spectroscopy from the X-ray to the optical, and feature prominently in proposed flagships and SmallSats alike. The exacting performance requirements of these future missions necessitate assessing whether the…

天体物理仪器与方法 · 物理学 2020-12-09 Casey T. DeRoo , Jared Termini , Fabien Grise , Randall L. McEntaffer , Benjamin D. Donovan , Chad Eichfeld

Graphene opens up for novel optoelectronic applications thanks to its high carrier mobility, ultra-large absorption bandwidth, and extremely fast material response. In particular, the opportunity to control optoelectronic properties through…