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An atomic force microscope is used to structure a film of multilayer graphene. The resistance of the sample was measured in-situ during nanomachining narrow trenches. We found a reversible behavior in the electrical resistance which we…

Mesoscale and Nanoscale Physics · Physics 2008-03-18 P. Barthold , T. Luedtke , R. J. Haug

We achieve fine tuning of graphene effective doping by applying ultrahigh pressures (> 10 GPa) using Atomic Force Microscopy (AFM) diamond tips. Specific areas in graphene flakes are irreversibly flattened against a SiO2 substrate. Our work…

Graphene is a powerful playground for studying a plethora of quantum phenomena. One of the remarkable properties of graphene arises when it is strained in particular geometries and the electrons behave as if they were under the influence of…

Graphene, being an ultrathin, durable, flexible, transparent material with superior conductivity and unusual optical properties, promises many novel applications in electronics, photonics and optoelectronics. For applications in…

Materials Science · Physics 2015-06-22 Jukka Aumanen , Andreas Johansson , Juha Koivistoinen , Pasi Myllyperkiö , Mika Pettersson

Graphene was deposited on a transparent and flexible substrate and tensile strain up to ~0.8% was loaded by stretching the substrate in one direction. Raman spectra of strained graphene show significant redshifts of 2D and G band (-27.8…

Materials Science · Physics 2008-10-21 Zhen Hua Ni , Ting Yu , Yun Hao Lu , Ying Ying Wang , Yuan Ping Feng , Ze Xiang Shen

Graphene is an atomically thin metallic membrane capable of sustaining reversible strain and offers a tempting prospect of controlling its optoelectronic properties via strain. Graphenes exceptional mechanical flexibility and tensile…

Mesoscale and Nanoscale Physics · Physics 2022-06-06 Paul Froeter , Parsian Moseni , Apratim Khandelwal , Xiuling Li

Using a simple setup to bend a flexible substrate, we demonstrate deterministic and reproducible in-situ strain tuning of graphene electronic devices. Central to this method is the full hBN encapsulation of graphene, which preserves the…

Graphene is attracting vast interest due to its superior electronic and mechanical properties. However, structure and electronic properties of its edge are often neglected, although they are important for nanoscale devices because the edge…

Mesoscale and Nanoscale Physics · Physics 2022-08-25 Takamoto Yokosawa , Masahiro Kamada , Taisuke Ochi , Yuki Koga , Rin Takehara , Masahiro Hara , Tomohiro Matsui

We present a molecular modeling study analyzing nanometer-scale strain variations in graphene as a function of externally applied tensile strain. We consider two different mechanisms that could underlie nanometer-scale strain variations:…

Mesoscale and Nanoscale Physics · Physics 2016-05-30 G. J. Verbiest , C. Stampfer , S. E. Huber , M. Andersen , K. Reuter

The strain induced pseudo-magnetic field in supported graphene deposited on top of a nanostructured substrate is investigated by using atomistic simulations. Step, elongated trench, one dimensional barrier, spherical bubbles, Gaussian bump…

Mesoscale and Nanoscale Physics · Physics 2015-06-04 M. Neek-Amal , F. M. Peeters

We analyze the effect of tensional strain in the electronic structure of graphene. In the absence of electron-electron interactions, within linear elasticity theory, and a tight-binding approach, we observe that strain can generate a bulk…

Materials Science · Physics 2009-07-15 Vitor M. Pereira , A. H. Castro Neto , N. M. R. Peres

The electronic and optical properties of graphene can be precisely tuned by generating deterministic arrangements of strain features. In this paper, we report the formation of widespread and controlled buckling delamination of monolayer…

We report a strain-controlled tuning of magnetism in transition-metal-atom-decorated graphene. Our first-principles calculations demonstrate that strain can lead to a sudden change in the magnetic configuration of a transition metal (TM)…

Mesoscale and Nanoscale Physics · Physics 2011-08-09 Bing Huang , Jaejun Yu , Su-Huai Wei

Graphene has many unique properties which make it an attractive material for fundamental study as well as for potential applications. In this paper, we report the first experimental study of process-induced defects and stress in graphene…

Materials Science · Physics 2008-06-04 Zhen Hua Ni , Hao Min Wang , Yun Ma , Johnson Kasim , Yi Hong Wu , Ze Xiang Shen

Friction-induced energy dissipation impedes the performance of nanoscale devices during their relative motion. Nevertheless, an ingeniously designed structure which utilizes graphene topping can tune the friction force signal by inducing…

Gallium nitride nanowire and nanorod substrates with different morphology are prospective platforms allowing to control the local strain distribution in graphene films top of them, resulting in an induction of pseudomagnetic fields. Atomic…

Graphene nanoribbons (GNRs) make up an extremely interesting class of materials. On the one hand GNRs share many of the superlative properties of graphene, while on the other hand they display an exceptional degree of tunability of their…

Materials Science · Physics 2018-03-22 Martina Corso , Eduard Carbonell-Sanromà , Dimas G. de Oteyza

Chemical, mechanical, thermal and/or electronic properties of bulk or low-dimensional materials can be engineered by introducing structural defects to form novel functionalities. When using particles irradiation, these defects can be…

Materials Science · Physics 2022-02-07 L. Basta , A. Moscardini , S. Veronesi , F. Bianco

Graphene is the extreme material for molecular sensory and hydrogen storage applications because of its two-dimensional geometry and unique structure-property relationship. In this Letter, hydrogenation of graphene is discussed in the…

Materials Science · Physics 2010-02-10 Zhiping Xu , Kun Xue

Strain engineering has been recently recognized as an effective way to tailor the electrical properties of graphene. In the optical domain, effects such as strain-induced anisotropic absorption add an appealing functionality to graphene,…

Mesoscale and Nanoscale Physics · Physics 2013-12-31 Guang-Xin Ni , Hong-Zhi Yang , Wei Ji , Seung-Jae Baeck , Chee-Tat Toh , Jong-Hyun Ahn , Vitor M. Pereira , Barbaros Özyilmaz