Size-dependent shape characteristics of 2D crystal blisters

Rao, Yifan; Kim, Eunbin; Dai, Zhaohe; He, Jinlong; Liu, Ying; Lu, Nanshu

doi:10.1016/j.jmps.2023.105286

Journal of the Mechanics and Physics of Solids

2023

DOI: 10.1016/j.jmps.2023.105286

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Size-dependent shape characteristics of 2D crystal blisters

Yifan Rao

Eunbin Kim

Zhaohe Dai

et al.

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Cited by 5 publications

(1 citation statement)

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“…To introduce strain into 2DMs, numerous methods have been investigated, including transferring 2DMs onto a prefabricated nanostructured substrate, − creating strain during 2DM deposition, , trapping liquid molecules, − and bending or stretching a polymer substrate that supports 2DMs. ,− However, these existing methods induce global strain over a large region of 2DMs and lack precise spatial control, which may not meet the requirements of device system integration. Therefore, a method that enables precise control of the strain localization and magnitude in 2DMs is urgently needed.…”

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confidence: 99%

Local Nanostrain Engineering of Monolayer MoS₂ Using Atomic Force Microscopy-Based Thermomechanical Nanoindentation

Chang,

Yan,

Geng

2023

Nano Lett.

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Strain engineering in two-dimensional materials (2DMs) has important application potential for electronic and optoelectronic devices. However, achieving precise spatial control, adjustable sizing, and permanent strain with nanoscale resolution remains challenging. Herein, a thermomechanical nanoindentation method is introduced, inspired by skin edema caused by mosquito bites, which can induce localized nanostrain and bandgap modulation in monolayer molybdenum disulfide (MoS2) transferred onto a poly(methyl methacrylate) film utilizing a heated atomic force microscopy nanotip. Via adjustment of the machining parameters, the strains of MoS2 are manipulated, achieving an average strain of ≤2.6% on the ring-shaped expansion structure. The local bandgap of MoS2 is spatially modulated using three types of nanostructures. Among them, the nanopit has the largest range of bandgap regulation, with a substantial change of 56 meV. These findings demonstrate the capability of the proposed method to create controllable and reproducible nanostrains in 2DMs.

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confidence: 99%

Local Nanostrain Engineering of Monolayer MoS₂ Using Atomic Force Microscopy-Based Thermomechanical Nanoindentation

Chang,

Yan,

Geng

2023

Nano Lett.

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Toward Clean 2D Materials and Devices: Recent Progress in Transfer and Cleaning Methods

Dong,

Dai,

Liu

et al. 2023

Advanced Materials

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Two‐dimensional (2D) materials have tremendous potential to revolutionize the field of electronics and photonics. Unlocking such potential, however, is hampered by the presence of contaminants that usually impede the performance of 2D materials in devices. This perspective provides an overview of recent efforts to develop clean 2D materials and devices. It begins by discussing conventional and recently developed wet and dry transfer techniques and their effectiveness in maintaining material “cleanliness”. Multi‐scale methodologies for assessing the cleanliness of 2D material surfaces and interfaces are then reviewed. Finally, recent advances in passive and active cleaning strategies are presented, including the unique self‐cleaning mechanism, thermal annealing, and mechanical treatment that rely on self‐cleaning in essence. The crucial role of interface wetting in these methods is emphasized, and it is hoped that this understanding can inspire further extension and innovation of efficient transfer and cleaning of 2D materials for practical applications.

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Bending Stiffness of Ionically Bonded Mica Multilayers told by its Bubbles

Li,

Tan,

Shen

et al. 2024

Journal of the Mechanics and Physics of Solids

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Size-dependent shape characteristics of 2D crystal blisters

Cited by 5 publications

References 53 publications

Local Nanostrain Engineering of Monolayer MoS₂ Using Atomic Force Microscopy-Based Thermomechanical Nanoindentation

Local Nanostrain Engineering of Monolayer MoS₂ Using Atomic Force Microscopy-Based Thermomechanical Nanoindentation

Toward Clean 2D Materials and Devices: Recent Progress in Transfer and Cleaning Methods

Bending Stiffness of Ionically Bonded Mica Multilayers told by its Bubbles

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Size-dependent shape characteristics of 2D crystal blisters

Cited by 5 publications

References 53 publications

Local Nanostrain Engineering of Monolayer MoS2 Using Atomic Force Microscopy-Based Thermomechanical Nanoindentation

Local Nanostrain Engineering of Monolayer MoS2 Using Atomic Force Microscopy-Based Thermomechanical Nanoindentation

Toward Clean 2D Materials and Devices: Recent Progress in Transfer and Cleaning Methods

Bending Stiffness of Ionically Bonded Mica Multilayers told by its Bubbles

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Product

Resources

About

Local Nanostrain Engineering of Monolayer MoS₂ Using Atomic Force Microscopy-Based Thermomechanical Nanoindentation

Local Nanostrain Engineering of Monolayer MoS₂ Using Atomic Force Microscopy-Based Thermomechanical Nanoindentation