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A blueprint for producing scalable digital graphene electronics has remained elusive. Current methods to produce semiconducting-metallic graphene networks all suffer from either stringent lithographic demands that prevent reproducibility,…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 J. Hicks , A. Tejeda , A. Taleb-Ibrahimi , M. S. Nevius , F. Wang , K. Shepperd , J. Palmer , F. Bertran , P. Le Fèvre , J. Kunc , W. A. de Heer , C. Berger , E. H. Conrad

On-surface synthesis enables the fabrication of graphene nanoribbons (GNRs) with atomic precision, allowing their electronic, optical, and magnetic properties to be tuned by engineering edge structure and width. Progress on the synthesis of…

Recently synthesized Porous 12-Atom-Wide Armchair Graphene Nanoribbons Nano Lett. 2024, 24, 10718-10723 exhibit tunable properties through periodic porosity, enabling precise control over their electronic, optical, thermal, and mechanical…

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

Recent progress in the on-surface synthesis of graphene nanoribbons (GNRs) has given access to atomically precise narrow GNRs with tunable electronic band gaps that makes them excellent candidates for room-temperature switching devices such…

Localized states in graphene have garnered significant attention in quantum information science due to their potential applications. Despite graphene's superior transport and electronic properties compared to other semiconductors, achieving…

Mesoscale and Nanoscale Physics · Physics 2024-07-30 Seunghyun Jun , Myung-Chul Jung , Nojoon Myoung

In this work we address the effects on the conductance of graphene nanoribbons (GNRs) at which organic molecules are side-attached on the ribbon ends. For simplicity, only armchair (AGNRs) and zigzag (ZGNRs) nanoribbons are considered and…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 L. Rosales , M. Pacheco , Z. Barticevic , A. Latge , P. A. Orellana

We show how hydrogenation of graphene nanoribbons at small concentrations can open new venues towards carbon-based spintronics applications regardless of any especific edge termination or passivation of the nanoribbons. Density functional…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 D. Soriano , F. Muñoz-Rojas , J. Fernández-Rossier , J. J. Palacios

We combine {\em ab initio} density functional theory (DFT) structural studies with DFT-based nonequilibrium Green function calculations to investigate how the presence of non-hexagonal rings affects electronic transport in graphitic…

Mesoscale and Nanoscale Physics · Physics 2015-02-26 Zhen Zhu , Zacharias G. Fthenakis , David Tomanek

Results of quantum mechanical simulations of the influence of edge disorder on transport in graphene nanoribbon metal oxide semiconductor field-effect transistors (MOSFETs) are reported. The addition of edge disorder significantly reduces…

Mesoscale and Nanoscale Physics · Physics 2008-04-10 D. Basu , M. J. Gilbert , L. F. Register , A. H. MacDonald , S. K. Banerjee

In this work we present a theoretical study of transport properties of a double crossbar junction composed by segments of graphene ribbons with different widths forming a graphene quantum dot structure. The systems are described by a…

Mesoscale and Nanoscale Physics · Physics 2011-04-29 Jhon W. Gonzalez , Monica Pacheco , Luis Rosales , Pedro Orellana

Graphene nano-ribbons junctions based electronic devices are proposed in this Letter. Non-equilibrium Green function calculations show that nano-ribbon junctions tailored from single layer graphene with different edge shape and width can…

Mesoscale and Nanoscale Physics · Physics 2007-06-13 Zhiping Xu

This contribution reports on comparative studies on giant magnetoresistance (GMR) in carbon nanotubes (CNTs) and graphene nanoribbons of similar aspect ratios (i.e perimeter/length and width/length ratios, for the former and the latter,…

Mesoscale and Nanoscale Physics · Physics 2008-05-12 S. Krompiewski

The extreme mechanical resilience of graphene and the peculiar coupling it hosts between lattice and electronic degrees of freedom have spawned a strong impetus towards strain-engineered graphene where, on the one hand, strain augments the…

Mesoscale and Nanoscale Physics · Physics 2017-08-16 Gareth W. Jones , D. A. Bahamon , A. H. Castro Neto , Vitor M. Pereira

We study the effect of a structural nanoconstriction on the coherent transport properties of otherwise ideal zig-zag-edged infinitely long graphene ribbons. The electronic structure is calculated with the standard one-orbital tight-binding…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 F. Muñoz-Rojas , D. Jacob , J. Fernández-Rossier , J. J. Palacios

Doped graphene emerges as a strong contender for active plasmonic material in the mid-infrared wavelengths due to the versatile external-control of its permittivity-function and also its highly-compressed graphene surface plasmon (GSP)…

Mesoscale and Nanoscale Physics · Physics 2013-12-31 Kelvin J. A. Ooi , Hong Son Chu , Lay Kee Ang , Ping Bai

Graphene has many advantageous properties, but its lack of an electronic band gap makes this two dimensional material impractical for many nanoelectronic applications, for example field effect transistors. This problem can be circumvented…

Mesoscale and Nanoscale Physics · Physics 2009-12-17 Peter Nemes Incze , Gabor Magda , Katalin Kamaras , Laszlo Peter Biro

we have fabricated transparent electronic devices based on graphene materials with thickness down to one single atomic layer by the transfer printing method. The resulting printed graphene devices retain high field effect mobility and have…

Materials Science · Physics 2008-09-10 Jian-Hao Chen , Masa Ishigami , Chaun Jang , Daniel R. Hines , Michael S. Fuhrer , Ellen D. Williams

To assist the design of novel, highly efficient molecular junctions, a deep understanding of the precise charge transport mechanisms through these devices is of prime importance. In the present contribution, we describe a procedure to…

Chemical Physics · Physics 2020-01-13 Vincent Pohl , Lukas Eugen Marsoner Steinkasserer , Jean Christophe Tremblay

The combination of graphene with silicon in hybrid devices has attracted attention extensively over the last decade. Most of such devices were proposed for photonics and radiofrequency applications. In this work, we present a unique…