Graphene nanoelectrodes for biomolecular sensing

Puczkarski, Paweł; Swett, Jacob L.; Mol, Jan A.

doi:10.1557/jmr.2017.256

Cited by 12 publications

(13 citation statements)

References 97 publications

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“…Such TLFs are yet to be reported on graphene nanodevices at room temperature 17 . Since charge fluctuators are generally thermally activated 2,34 , operating at room temperature usually results in the sampling of a large number of fluctuators. However, since our devices have dimensions on the order of a few nanometers we sample a small number of fluctuators even at room temperature.…”

Section: Resultsmentioning

confidence: 99%

“…Graphene nanostructures have received significant attention in recent years for use as single-molecule biosensors 1,2 . Interest in these devices has often focused on DNA sequencing applications [3][4][5] , however, these devices are also being extended for an array of studies on the dynamics and interactions of biomolecules [6][7][8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

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Large amplitude charge noise and random telegraph fluctuations in room-temperature graphene single-electron transistors

et al. 2020

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Large amplitude charge noise and random telegraph fluctuations in room-temperature graphene single-electron transistors

et al. 2020

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“…A nanofabricated graphene wire (see left inset) is gradually narrowed by a feedback-controlled electrical breakdown procedure, 20,50,51 obtaining atomic-sized graphene junctions (middle inset) and finally truly nanometer-wide nanogaps (right inset). Afterwards these nanogaps can be utilized to contact ultra-small functional elements, like single-molecules, 21,23,26,52 DNA sequences 22,53 or ultra-small resistive switching filaments. 24,25,54 In the first (light red) resistance regime the weakly resistance dependent and rather low noise level originates from the leads.…”

Section: Resistance Scaling Of the Noisementioning

confidence: 99%

1/f noise spectroscopy and noise tailoring of nanoelectronic devices

Balogh¹,

Mezei²,

Pósa³

et al. 2021

Preprint

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In this paper, we review the 1/ f -type noise properties of nanoelectronic devices focusing on three demonstrative platforms: resistive switching memories, graphene nanogaps and single-molecule nanowires. The functionality of such ultrasmall devices is confined to an extremely small volume, where bulk considerations on the noise loose their validity: the relative contribution of a fluctuator heavily depends on its distance from the device bottleneck, and the noise characteristics are sensitive to the nanometer-scale device geometry and the details of the mostly non-classical transport mechanism. All these are reflected by a highly system-specific dependence of the noise properties on the active device volume (and the related device resitance), the frequency, or the applied voltage. Accordingly, 1/ f -type noise measurements serve as a rich fingerprint of the relevant transport and noise-generating mechanisms in the studied nanoelectronic systems. Finally, we demonstrate that not only the fundamental understanding and the targeted noise suppression is fueled by the 1/ f -type noise analysis, but novel probabilistic computing hardware platforms heavily seek well tailorable nanoelectric noise sources.

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“…Read off this information significantly impacts the diagnosis and treatment of disease, and provides technological innovations for forensics, biotechnology branches, and environmental monitoring and etc ,. Hence, further development for cheaper and faster techniques towards stable, robust and reproducible next‐generation sequencing nanodevices is essential ,…”

Section: Introductionmentioning

confidence: 99%

Graphene‐hBN Hybrid Nanogap for Boosting DNA Nucleobases Recognition Sensitivity

2019

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The construction of hybrid graphene/hexagonal boron nitride (hBN) nanodevices with applications in sensing could make it possible to tailor hybrid nanogap architectures. Here, we explore the advantages of hybrid graphene/ hexagonal boron nitride nanogaps to improve the sensing of DNA nucleobases compared to graphene nanogaps. To this end, ab-initio calculations are employed to investigate both the electronic properties of different graphene/hBN hybrids and the transport properties of DNA nucleobases located between aforementioned hybrid nanogaps. Our results show that hybrid nanogaps with boron interfaces shift the HOMO toward the Fermi energy leading to a better transmission coefficient in the vicinity of the Fermi energy level. In addition, nanogaps with boron interfaces and narrower graphene nanoroads enhance the sensitivity at and around the Fermi energy level for all nucleobases, especially for small ones.

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Graphene nanoelectrodes for biomolecular sensing

Abstract: Abstract

Cited by 12 publications

References 97 publications

Large amplitude charge noise and random telegraph fluctuations in room-temperature graphene single-electron transistors

Large amplitude charge noise and random telegraph fluctuations in room-temperature graphene single-electron transistors

1/f noise spectroscopy and noise tailoring of nanoelectronic devices

Graphene‐hBN Hybrid Nanogap for Boosting DNA Nucleobases Recognition Sensitivity

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