Strain modulation using defects in two-dimensional 
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Burns, Kory; Tan, Anne Marie Z.; Gordon, Horace; Wang, Tianyao; Gabriel, Adam; Shao, Lin; Hennig, Richard G.; Aitkaliyeva, Assel

doi:10.1103/physrevb.102.085421

Cited by 15 publications

(16 citation statements)

References 54 publications

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“…Large-scale atomic sputtering is produced in response to in-plane collisional cascades, [33] generating impactful deformation fields emanating from large defect pores. [22] These deformation fields cause local displacements of the surrounding lattice, which should alter the periodicity of the moiré patterns in bilayer MoS 2 sheets, as previously seen in twisted bilayer graphene. [34,35] We, therefore, hypothesize that damage (i.e., extended defects such as nanopores) can also be used to induce moiré superlattices and provide an avenue for controlling twist angle in vdW solids.…”

Section: Introductionmentioning

confidence: 91%

“…Figure 1a displays high-angle annular dark-field (HAADF) STEM view of the enumerations of intrinsic defects in few layer 2H-MoS 2 found in the as-fabricated sheets. The order in which the defects are displayed is in order of increasing formation energy in S-rich conditions: [22,37,38] V S , V S2(c) , V S2(p) , V Mo , V MoS2 , V MoS3 , and V MoS6 . The antisite defects in few layer MoS 2 , shown in Figure S2, Supporting Information, are presented in order of most abundantly found: S ada-S , S2 Mo , and Mo S2 .…”

Section: Characterization and Formation Of Defects And Phase Transfor...mentioning

confidence: 99%

“…Large‐scale atomic sputtering is produced in response to in‐plane collisional cascades, [ 33 ] generating impactful deformation fields emanating from large defect pores. [ 22 ] These deformation fields cause local displacements of the surrounding lattice, which should alter the periodicity of the moiré patterns in bilayer MoS 2 sheets, as previously seen in twisted bilayer graphene. [ 34,35 ]…”

Section: Introductionmentioning

confidence: 97%

“…The role defects play on compressive/tensile strains of monolayer MoS 2 has also been investigated, where we found that S vacancies induce a compressive strain and Mo vacancies produce a tensile strain. [22,23] Of course, this will cause variations in lattice constants of vertically stacked sheets of similar materials, assuming one layer has a different defect concentration than the other.…”

Section: Introductionmentioning

confidence: 99%

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Tailoring the Angular Mismatch in MoS₂ Homobilayers through Deformation Fields

Burns

Tan

Hachtel

et al. 2023

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Ultrathin MoS2 has shown remarkable characteristics at the atomic scale with an immutable disorder to weak external stimuli. Ion beam modification unlocks the potential to selectively tune the size, concentration, and morphology of defects produced at the site of impact in 2D materials. Combining experiments, first‐principles calculations, atomistic simulations, and transfer learning, it is shown that irradiation‐induced defects can induce a rotation‐dependent moiré pattern in vertically stacked homobilayers of MoS2 by deforming the atomically thin material and exciting surface acoustic waves (SAWs). Additionally, the direct correlation between stress and lattice disorder by probing the intrinsic defects and atomic environments are demonstrated. The method introduced in this paper sheds light on how engineering defects in the lattice can be used to tailor the angular mismatch in van der Waals (vdW) solids.

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Section: Introductionmentioning

confidence: 91%

Section: Characterization and Formation Of Defects And Phase Transfor...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tailoring the Angular Mismatch in MoS₂ Homobilayers through Deformation Fields

Burns

Tan

Hachtel

et al. 2023

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“…The strain in defect-rich catalysts [87][88][89][90][91] is different from the lattice strain caused by the lattice-mismatch. In this case, the atom-atom bond length is affected by the defect sites nearby.…”

Section: Strain Caused By Defectsmentioning

confidence: 99%

Strain Engineering in Electrocatalysts: Fundamentals, Progress, and Perspectives

Yang

Wang

Tong

et al. 2021

Advanced Energy Materials

115

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sive utilization of fossil fuels. The design and development of efficient, economic, and sustainable strategies to convert clean energy (e.g., solar energy, wind energy, and hydropower energy) is thus of great significance. Among various available strategies, electrochemical energy conversion technologies have been attracted extreme attention. They mainly include (photo)electrochemical reduction of atmosphere-rich and greenhouse gas-carbon dioxideinto high value-added chemicals or liquid fuels under mild reaction conditions, electrosynthesis of NH 3 with low energy consumption to substitute the Haber method, electrochemical overall water splitting, and different kinds of fuel cells. By use of these electrochemical energy conversion technologies, it is believed that both the issues of energy shortage and environmental pollution are promising to be solved, eventually creating a globalized system with a sustainable energy circle for our society in the future (Figure 1). [1][2][3][4][5][6][7] To achieve efficient electrochemical conversion technologies, high-performance electrochemical conversion platforms need to be initialized, where electrocatalysts are frequently required. An electrocatalyst actually plays a vital role in the determination and further improvement of reaction rate, efficiency, and selectivity of different electrochemical transformations. In terms of its catalytic performance, the most crucial factors are generally considered as the amount of its active sites, the intrinsic activity of each active site, and the total efficiency of these active sites. [8] It is well-known that the amount of active sites of an electrocatalyst and its electrocatalytic efficiency can be increased through enlarging the surface area of an electrocatalyst, for example by means of synthesizing a nanostructured catalyst (e.g., nanosheets, [9] nanowires, [10] nanopores, [11][12][13] and coreshell structures [14,15] ). Meanwhile, the intrinsic activity of each catalytic site basically follows the Sabatier principle, [16][17][18][19][20] which is closely related to the ability of an electrocatalyst to weaken or strengthen the binding energies with reactants, reaction intermediates, and/or products. For example, when the free energy of hydrogen adsorption (ΔG H ) on the active sites of an electrocatalyst remains at a moderate strength, this catalyst exhibits the highest catalytic activity toward hydrogen evolution reaction (HER). In contrast, too strong or too weak ΔG H on the active sites of an electrocatalyst precludes the HER. [21][22][23] Among numerous electrocatalysts, multiple metal components based electrocatalysts have been extensively utilized in Strain engineering of nanomaterials, namely, designing, tuning, or controlling surface strains of nanomaterials is an effective strategy to achieve outstanding performance in different nanomaterials for their various applications. This article summarizes recent progress and achievements in the development of strain-rich electrocatalysts (SREs) and their applications in the fi...

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Roadmap toward Controlled Ion Beam‐Induced Defects in 2D Materials

Telkhozhayeva,

Girshevitz

2024

Adv Funct Materials

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Understanding the nature, density, and distribution of structural defects is crucial for tailoring the properties of atomically thin two‐dimensional (2D) materials, which is paramount for advances in nanotechnology. Ion irradiation emerges as a promising technique for defect engineering of single‐atom‐thick materials, due to its high controllability, repeatability, and accuracy. The objective is to provide a comprehensive review elucidating the impact of various irradiation parameters, such as ion mass, energy, fluence, and incident angle, on defect formation in 2D materials. However, the presence of the substrate can significantly influence defect yield and the mechanism of formation due to backscattered ions and sputtered substrate atoms. Hence, a thorough comparison of ion beam‐induced defects in both freestanding (suspended) and supported (on a substrate) 2D materials, with a focus on substrate effects is conducted. Moreover, a detailed analysis of characterization techniques suitable for each scenario will be provided. This work not only contributes to advancing the current understanding of defect formation and evolution in 2D materials during ion beam irradiation but also offers insights into selecting specific parameters for this process to create desired defects in these materials. Consequently, it has the potential to facilitate the design of nanoscale devices with tailored functionality.

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Strain modulation using defects in two-dimensional MoS2

Cited by 15 publications

References 54 publications

Tailoring the Angular Mismatch in MoS₂ Homobilayers through Deformation Fields

Tailoring the Angular Mismatch in MoS₂ Homobilayers through Deformation Fields

Strain Engineering in Electrocatalysts: Fundamentals, Progress, and Perspectives

Roadmap toward Controlled Ion Beam‐Induced Defects in 2D Materials

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Strain modulation using defects in two-dimensional MoS2

Cited by 15 publications

References 54 publications

Tailoring the Angular Mismatch in MoS2 Homobilayers through Deformation Fields

Tailoring the Angular Mismatch in MoS2 Homobilayers through Deformation Fields

Strain Engineering in Electrocatalysts: Fundamentals, Progress, and Perspectives

Roadmap toward Controlled Ion Beam‐Induced Defects in 2D Materials

Contact Info

Product

Resources

About

Tailoring the Angular Mismatch in MoS₂ Homobilayers through Deformation Fields

Tailoring the Angular Mismatch in MoS₂ Homobilayers through Deformation Fields