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Due to its high charge carrier mobility, broadband light absorption, and ultrafast carrier dynamics, graphene is a promising material for the development of high-performance photodetectors. Graphene-based photodetectors have been…

Mesoscale and Nanoscale Physics · Physics 2015-02-25 Biddut K. Sarker , Isaac Childres , Edward Cazalas , Igor Jovanovic , Yong P. Chen

Carbon-based materials like nanotubes and graphene are heavily investigated as future CMOS-like devices and in interconnect applications. While much of the interest has been devoted to the device aspects in competition to conventional CMOS…

Materials Science · Physics 2010-12-23 Franz Kreupl

We investigate theoretically the performance advantages of all-graphene nanoribbon field-effect transistors (GNRFETs) whose channel and source/drain (contact) regions are patterned monolithically from a two-dimensional single sheet of…

Mesoscale and Nanoscale Physics · Physics 2011-12-14 Dincer Unluer , Frank Tseng , Avik W. Ghosh , Mircea R. Stan

A real-space quantum transport simulator for carbon nanoribbon (CNR) MOSFETs has been developed. Using this simulator, the performance of carbon nanoribbon (CNR) MOSFETs is examined in the ballistic limit. The impact of quantum effects on…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Gengchiau Liang , Neophytos Neophytou , Mark S. Lundstrom , Dmitri E. Nikonov

High-performance sealing materials that can guard key components against high pressure gases and liquid chemicals while withstanding mechanical deformation are of utmost importance in a number of industries. In this present work, graphene…

Materials Science · Physics 2020-12-02 Mufeng Liu , Pietro Cataldi , Robert J. Young , Dimitrios G. Papageorgiou , Ian A. Kinloch

This paper describes a novel design of a threshold logic gate (a binary perceptron) and its implementation as a standard cell. This new cell structure, referred to as flash threshold logic (FTL), uses floating gate (flash) transistors to…

Emerging Technologies · Computer Science 2020-05-20 Ankit Wagle , Gian Singh , Jinghua Yang , Sunil Khatri , Sarma Vrudhula

We report the batch fabrication of graphene field-effect-transistors (GFETs) with nanoperforated graphene as channel. The transistors were cut and encapsulated. The encapsulated GFETs display saturation regions that can be tuned by…

Mesoscale and Nanoscale Physics · Physics 2016-12-21 Mircea Dragoman , Adrian Dinescu , Daniela Dragoman

We invented a novel method to fabricate graphene transistors on oxidized silicon wafers without the need to transfer graphene layers. By means of catalytic chemical vapor deposition (CCVD) the in-situ grown bilayer graphene transistors…

Mesoscale and Nanoscale Physics · Physics 2013-03-04 Pia Juliane Wessely , Frank Wessely , Emrah Birinci , Bernadette Riedinger , Udo Schwalke

The absence of a band gap in graphene restricts its straight forward application as a channel material in field effect transistors. In this letter, we report on a new approach to engineer a band gap in graphene field effect devices (FED) by…

Materials Science · Physics 2009-11-13 T. J. Echtermeyer , M. C. Lemme , M. Baus , B. N. Szafranek , A. K. Geim , H. Kurz

Carbon nanostructures, such as nanotubes and graphene nanoribbons, exhibit unique electronic and optical properties that make them very promising candidates for terahertz components. However, carbon nanotube and nanoribbon monolithic…

Mesoscale and Nanoscale Physics · Physics 2026-05-26 Vasil A. Saroka , Olivia Pulci , Marco D'Alessandro

Electrostatically Formed Nanowire (EFN) based transistors have been suggested in the past as gas sensing devices. These transistors are multiple gate transistors in which the source to drain conduction path is determined by the bias applied…

Emerging Technologies · Computer Science 2015-06-02 Gideon Segev , Iddo Amit , Andrey Godkin , Alex Henning , Yossi Rosenwaks

As the semiconductor manufacturing process technology node shrinks into the nanometer-scale, the CMOS-based Field Programmable Gate Arrays (FPGAs) face big challenges in scalability of performance and power consumption. Multi-walled Carbon…

Hardware Architecture · Computer Science 2025-09-22 Siyuan Lu , Kangwei Xu , Peng Xie , Rui Wang , Yuanqing Cheng

This work evaluates the performance of carbon nanotube field effect transistors (CNTFET) using few layer graphene as the contact electrode material. We present the experimental results obtained on the barrier height at CNT graphene junction…

Mesoscale and Nanoscale Physics · Physics 2016-11-17 P R Yasasvi Gangavarapu , Punith Chikkahalli Lokesh , K N Bhat , A K Naik

The past decade has seen rapid growth in the research area of graphene and its application to novel electronics. With Moore's law beginning to plateau, the need for post-silicon technology in industry is becoming more apparent. Moreover,…

Mesoscale and Nanoscale Physics · Physics 2021-07-22 Mohamed Warda , Khodr Badih

We fabricated graphene pnp devices, by embedding pre-defined local gates in an oxidized surface layer of a silicon substrate. With neither dielectric-material deposition nor electron-beam irradiation on the graphene, we obtained…

Mesoscale and Nanoscale Physics · Physics 2015-05-30 Seung-Geol Nam , Dong-Keun Ki , Jong Wan Park , Youngwook Kim , Jun Sung Kim , Hu-Jong Lee

Graphyne nanotubes (GNTs) are nanostructures obtained from rolled up graphyne sheets, in the same way carbon nanotubes (CNTs) are obtained from graphene ones. Graphynes are 2D carbon-allotropes composed of atoms in sp and sp2 hybridized…

Graph Transformers (GTs) have significantly advanced the field of graph representation learning by overcoming the limitations of message-passing graph neural networks (GNNs) and demonstrating promising performance and expressive power.…

Machine Learning · Computer Science 2024-05-07 Wenhao Zhu , Guojie Song , Liang Wang , Shaoguo Liu

Resistive random access memory (RRAM) is very well known for its potential application in in-memory and neural computing. However, they often have different types of device-to-device and cycle-to-cycle variability. This makes it harder to…

Emerging Technologies · Computer Science 2023-08-08 Rajalekshmi TR , Rinku Rani Das , Chithra R , Alex James

Graphene and carbon nanotubes (CNTs) share the same atomic structure of hexagonal carbon lattice. Yet, their synthesis differs in many aspects, including the shape and size of the catalyst. Here, we demonstrate a floating-catalyst chemical…

Graphene is a promising material for applications as a channel in graphene field-effect transistors (GFETs) which may be used as a building block for optoelectronics, high-frequency devices and sensors. However, these devices require gate…