Ångstrom-Scale, Atomically Thin 2D Materials for Corrosion Mitigation and Passivation

Tanjil, Rubayat-E; Jeong, Yunjo; Yin, Zhewen; Panaccione, Wyatt; Wang, Michael Cai

doi:10.3390/coatings9020133

Cited by 26 publications

(22 citation statements)

References 187 publications

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“…To date, various 2D materials have been used experimentally to realize nanopore NA sequencing including 2D semi-metallic graphene and its derivatives (e.g., graphene nanoribbons), insulating hexagonal boron nitride (hBN), semiconducting transition metal dichalcogenides (TMDC) (e.g., molybdenum disulfide [MoS2], tungsten disulfide [WS2]), and transition metal carbides or nitrides (MXenes) (Figure 2a-d) [20]- [22]. Approaches for the synthesis of 2D materials has progressed rapidly over the past few years to include exfoliation (mechanical, liquid, and gas) and chemical/physical vapor deposition, with ever-improving control over their stoichiometry and morphology [23]. Evolving capabilities to synthesize large-area and low-defect 2D crystals are also enabling future wafer-scale device integrability.…”

Section: Solid-state Membrane Materialsmentioning

confidence: 99%

Ångström- and Nano-scale Pore-Based Nucleic Acid Sequencing of Current and Emergent Pathogens

et al. 2020

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State-of-the-art nanopore sequencing enables rapid and real-time identification of novel pathogens, which has wide application in various research areas and is an emerging diagnostic tool for infectious diseases including COVID-19. Nanopore translocation enables de novo sequencing with long reads (> 10 kb) of novel genomes, which has advantages over existing short-read sequencing technologies. Biological nanopore sequencing has already achieved success as a technology platform but it is sensitive to empirical factors such as pH and temperature. Alternatively, ångström- and nano-scale solid-state nanopores, especially those based on two-dimensional (2D) membranes, are promising next-generation technologies as they can surpass biological nanopores in the variety of membrane materials, ease of defining pore morphology, higher nucleotide detection sensitivity, and facilitation of novel and hybrid sequencing modalities. Since the discovery of graphene, atomically-thin 2D materials have shown immense potential for the fabrication of nanopores with well-defined geometry, rendering them viable candidates for nanopore sequencing membranes. Here, we review recent progress and future development trends of 2D materials and their ångström- and nano-scale pore-based nucleic acid (NA) sequencing including fabrication techniques and current and emerging sequencing modalities. In addition, we discuss the current challenges of translocation-based nanopore sequencing and provide an outlook on promising future research directions.

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Section: Solid-state Membrane Materialsmentioning

confidence: 99%

Ångström- and Nano-scale Pore-Based Nucleic Acid Sequencing of Current and Emergent Pathogens

et al. 2020

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“…The feasibility of using monolayer hBN as an atomically‐thin barrier/liner to molecular and ionic transport has been previously investigated. [ 16,17 ] Given its ultimate thinness of ≈0.35 nm, [ 18 ] hBN exhibits potential as an ultrathin barrier/liner in ICs to mitigate electromigration. Furthermore, the electrically insulating property of hBN makes it a promising material for preventing short circuits in interconnects.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of Electromigration in Metal Interconnects via Hexagonal Boron Nitride as an Ångström‐Thin Passivation Layer

Jeong

Douglas

Misra

et al. 2021

Adv Elect Materials

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Electromigration in metal interconnects remains a significant challenge in the continued scaling of integrated circuits towards ever‐smaller single‐nanometer nodes. Conventional damascene architectures of barrier/liner layers and conducting metal cause inevitable compromises between device performance and feature dimensions. In contrast to contemporary barrier/liner materials (e.g., Co, Ta, and Ru), an ultrathin passivation layer that can effectively mitigate electromigration is needed. At the ultimate atomically‐thin limit, 2D materials are promising candidates given their exceptional mechanical properties and impermeability. Here, a facile and effective approach is presented to mitigating electromigration in copper (Cu) interconnects via passivation with insulating monolayer 2D hexagonal boron nitride (hBN). The hBN‐passivated Cu interconnects, compared to otherwise identical but bare Cu interconnects, exhibit on average a >20% higher breakdown current density and a >2600% longer lifetime (at a high current density of 5.4 × 107 A cm−2). Post‐mortem metrology elucidates uniform conformal contact between the hBN‐passivated Cu interface and common failure features due to electromigration.

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“…For example, the color of BN is white with a large bandgap of 5.5 eV. While the color of graphene is black and it is conductive [9]. Due to these unusual structures and characteristics, BN nanosheets have found diverse functionalities.…”

Section: Introductionmentioning

confidence: 99%

Effect of the vacancy on the electrical transport properties of boron nitride nanosheets

Sadeghi

Yaghobi

Niazian

et al. 2021

Preprint

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Vacancies occur naturally in all crystalline materials. A vacancy is a point defect in a crystal in which an atom is removed at one of the lattice sites. The defect could be imported during the synthesis of the material or be added by defect engineering. In this paper by employing the density functional theory as well as the non-equilibrium Green’s function approach, the structure and electronic properties of the perfect and defected BN nanosheet would be obtained and compared. Besides, the influence of the vacancy defect position is evaluated. For this purpose, the defect is considered at the center, left, and right hand sides of the nanosheet. It is seen that the electric current changes by changing the position of the vacancy defect, which is related to the electronic structures of BN nanosheets. In addition, the transmission and conductance for BN nanosheets with vacancy continuously change by changing the bias voltage. The obtained results can benefit the design and implementation of BN nanosheets in nanoelectronic systems and devices.

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Ångstrom-Scale, Atomically Thin 2D Materials for Corrosion Mitigation and Passivation

Cited by 26 publications

References 187 publications

Ångström- and Nano-scale Pore-Based Nucleic Acid Sequencing of Current and Emergent Pathogens

Ångström- and Nano-scale Pore-Based Nucleic Acid Sequencing of Current and Emergent Pathogens

Mitigation of Electromigration in Metal Interconnects via Hexagonal Boron Nitride as an Ångström‐Thin Passivation Layer

Effect of the vacancy on the electrical transport properties of boron nitride nanosheets

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