Non-uniform self-folding of impure graphene

Li, Ming; Che, Lixuan; Guan, Zhenqun; Kang, Zhan

doi:10.1016/j.ijmecsci.2020.106158

Cited by 6 publications

(3 citation statements)

References 42 publications

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“…Graphene, like a sheet of paper, self folds under mechanical stress remains a big challenge. [ 169,170 ] The folded graphene edges can alter the electrical and surface properties of AgNW/graphene composite electrode which consequently degrade the device perforamnce. The stability of folded graphene, however, depends on the folding direction and the resulted graphene stacking.…”

Section: Challenges and Future Perspectivesmentioning

confidence: 99%

Advances in Silver Nanowires‐Based Composite Electrodes: Materials Processing, Fabrication, and Applications

Meena

Choi

Jung

et al. 2023

Adv Materials Technologies

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This article reviews the increasing need for innovative transparent and conductive electrodes (TCEs) for modern optoelectronics, flexible electronics, sensors, and biomedical devices as alternatives to brittle and scarce conventional indium tin oxide (ITO). Among the various TCE materials explored, silver nanowires (AgNWs) have emerged as a promising candidate to replace ITO, thanks to their remarkable properties. However, AgNW‐based TCEs can present limitations such as thermal instability, high contact resistance, increased surface roughness, and inadequate adhesion to substrates. Incorporating secondary conductive materials with AgNWs has proven effective in mitigating these challenges, leading to high‐performance composite electrodes. This review offers a comprehensive overview of the latest advancements in AgNW‐based composite TCEs for applications in optoelectronics, flexible electronics, sensors, and biomedical devices. It covers the materials and methodologies employed to construct high‐performance composite electrodes and present a comparative analysis of various composite TCEs in terms of their optical, electrical, and mechanical properties and performance in different electronic devices. The article also discusses recent breakthroughs in enhancing TCE stability, adhesion, and contact resistance reduction by employing additional materials such as graphene, conductive polymers, and metal oxide nanoparticles. The review addresses the challenges in the field of composite TCEs, proposes potential solutions, and highlights opportunities.

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Section: Challenges and Future Perspectivesmentioning

confidence: 99%

Advances in Silver Nanowires‐Based Composite Electrodes: Materials Processing, Fabrication, and Applications

Meena

Choi

Jung

et al. 2023

Adv Materials Technologies

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“…Driven by the van der Waals interaction, graphene with exceptional electrical [1][2][3], thermal [4][5][6], mechanical [7][8][9] properties yet extreme flexibilities [10,11] is prone of selffolding [12,13] and self-tearing [14], leading to the twodimensional (2D) to three-dimensional (3D) configuration transition and sequential complex spatial structures, such as ribbon [15], foams [16] and polyhedral [17,18], in a load-free and self-assembly [19][20][21] manner. This promises various engineering and potential applications, including straininsensitive sensors [22][23][24], stretchable electronics [25], water desalination [26], thermal transparency and thermoelectric material [27,28], nanomotors [29], heat management systems [30], walking devices [31] and biosensing skin [32].…”

Section: Introductionmentioning

confidence: 99%

Defect-guided self-tearing in graphene

Li,

Kang,

2024

Nanotechnology

Self Cite

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The two-dimensional to three-dimensional configuration transition through self-tearing promises the engineering and promising applications of graphene. However, it is challenging to control the tearing path on demand through common thermal and interfacial treatments. In this manuscript, a defect-guided self-tearing technique is proposed to generate wider, longer, and even curved and serrated configurations, which is impossible for defect-free graphene. The underlying tearing mechanisms are disclosed through molecular dynamics simulations and theoretical model. This study provides a useful guidance to the implementation of complex and functional three-dimensional graphene structures.

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“…kirigami membranes [Tang and Fu, 2020], non-uniform folding [Li et al, 2020] and self-folding graphene [Li et al, 2021]. On the other hand, buckling and postbuckling behaviors of various nanomaterials (e.g., nanoribbons, carbon nanotubes, and thin films) represent a simple yet effective strategy for creating stretchability [Jiang et al, 2008;Song et al, 2008;Xiao et al, 2008a;Xiao et al, 2008b;Song et al, 2009].…”

Section: Introductionmentioning

confidence: 99%

Controlled Bi-Axial Buckling and Postbuckling of Thin Films Suspended on a Stretchable Substrate with Square Prism Relief Structures

Zhang

et al. 2022

Int. J. Appl. Mechanics

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Stretchable electronics have spurred rapid developments from curvilinear devices to bio-integrated diagnostic and therapeutic devices. The wavy configuration in the device components on a stretchable elastomeric substrate surface plays a prominent role in simultaneously achieving high areal coverage and stretchability without compromising the electric performance, resulting in unique applications in stretchable and flexible light-emitting diodes (LEDs), batteries, supercapacitors, and photovoltaics. In this study, we investigate the buckling behaviors of stiff thin films on the top surface of a biaxially pre-strained elastomeric substrate with square prism micro-patterned structures. Based on energy minimization, a theoretical model is established to study the buckling profiles and the maximum strain for different pre-strain levels along two directions, which agrees reasonably well with those obtained by the finite element analysis (FEA). After revealing the effect of the center-to-center distance in micro-patterned structures and the interfacial contact width between the film and substrate on the buckling behavior, the elastic stretchability of the system is studied.

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Non-uniform self-folding of impure graphene

Cited by 6 publications

References 42 publications

Advances in Silver Nanowires‐Based Composite Electrodes: Materials Processing, Fabrication, and Applications

Advances in Silver Nanowires‐Based Composite Electrodes: Materials Processing, Fabrication, and Applications

Defect-guided self-tearing in graphene

Controlled Bi-Axial Buckling and Postbuckling of Thin Films Suspended on a Stretchable Substrate with Square Prism Relief Structures

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