Local impact of Stone–Wales defect on a single layer GNRFET

Shamloo, Hassan; Nazari, Atefeh; Faez, Rahim; Shahhoseini, Ali

doi:10.1016/j.physleta.2019.126170

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…The transport behavior of this defect has interesting characteristics for a monolayer graphene FET. 27,35 However, there is no precise investigation for a SW defect located at different positions in BLGs. The role of the defect position is then examined for a BLGNRFET.…”

Section: Resultsmentioning

confidence: 99%

Local Impact of Stone-Wales Defect on a Bilayer Graphene Nanoribbon FET

Owlia¹,

Nayeri

2021

ECS J. Solid State Sci. Technol.

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Bilayer graphene (BLG) is a well-known allotrope of carbon atoms and nominated to be used as an appropriate transistor channel. In spite of advances for preparing defect-free and crystalline BLGs, unwanted defects are emerged during immature fabrication process. This paper investigates I–V curves of bilayer graphene nanoribbon FET (BLGNRFET) in the presence of one of the most possible defect called Stone-Wales (SW) defect. These defects are located at three positions along and across the channel. Simulation approach is performed by fully quantum-mechanical numerical calculations using Non-Equilibrium Green’s Function (NEGF) formalism. The role of the defect position is studied for both OFF and ON states. Furthermore, the effect of the defect position is included on several digital and analog metrics such as delay, power delay product and cut-off frequency.

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Section: Resultsmentioning

confidence: 99%

Local Impact of Stone-Wales Defect on a Bilayer Graphene Nanoribbon FET

Owlia¹,

Nayeri

2021

ECS J. Solid State Sci. Technol.

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“…Defects in graphene include intrinsic defects (Stone–Wales defects, single vacancy defects, multiple vacancy defects, line defects, and carbon adatoms) [ 80 ] and extrinsic defects (mainly oxygen‐containing functional groups on the surface of graphene). [ 81 ] Stone–Wales defects benefit from increasing the electronic conductivity of graphene when working as biosensors, [ 82 ] while extrinsic defects could work as sites for functionalization; [ 43 ] thus, defects are not undesirable in graphene for specific biomedical applications. STM, TEM, AFM, and Raman microscopy can be used to detect defects.…”

Section: Synthesis Of Graphene For Biomedical Applicationsmentioning

confidence: 99%

Synthesis and Functionalization of Graphene Materials for Biomedical Applications: Recent Advances, Challenges, and Perspectives

et al. 2023

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Since its discovery in 2004, graphene is increasingly applied in various fields owing to its unique properties. Graphene application in the biomedical domain is promising and intriguing as an emerging 2D material with a high surface area, good mechanical properties, and unrivalled electronic and physical properties. This review summarizes six typical synthesis methods to fabricate pristine graphene (p‐G), graphene oxide (GO), and reduced graphene oxide (rGO), followed by characterization techniques to examine the obtained graphene materials. As bare graphene is generally undesirable in vivo and in vitro, functionalization methods to reduce toxicity, increase biocompatibility, and provide more functionalities are demonstrated. Subsequently, in vivo and in vitro behaviors of various bare and functionalized graphene materials are discussed to evaluate the functionalization effects. Reasonable control of dose (<20 mg kg−1), sizes (50–1000 nm), and functionalization methods for in vivo application are advantageous. Then, the key biomedical applications based on graphene materials are discussed, coupled with the current challenges and outlooks of this growing field. In a broader sense, this review provides a comprehensive discussion on the synthesis, characterization, functionalization, evaluation, and application of p‐G, GO, and rGO in the biomedical field, highlighting their recent advances and potential.

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