An experimental investigation on the tangential interfacial properties of graphene: Size effect

Xu, Chaochen; Xue, Tao; Guo, Jiangang; Kang, Yilan; Qiu, Wei; Song, Haibin; Xie, Haimei

doi:10.1016/j.matlet.2015.09.088

Cited by 24 publications

(14 citation statements)

References 17 publications

(18 reference statements)

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“…1, and a uniaxial compression is applied to the substrate. During the process of loading, interfacial failure, sliding, or buckling of graphene may take place at the edge or middle of graphene 15,16 (as shown in FIG. 1), which has been observed and in-situ measured in experiments.…”

Section: The Critical Strain For Slidingmentioning

confidence: 99%

“…The displacements of graphene and the substrate in the x direction are u g and u s , respectively. Some experiments 11,15 have indicated that the substrate strain is small before interfacial sliding occurs, and its normal and transverse deformations have little influence on the axial deformations of the substrate and graphene. Thus, for the sake of simplification, the following equilibrium equations can be obtained according to the relationship between force and displacement:…”

Section: The Critical Strain For Slidingmentioning

confidence: 99%

“…[10][11][12][13][14][15] Young et al 10,16 used Raman spectroscopy to measure the interfacial stress/strain transfer from a polymer matrix to graphene under uniaxial tensile loading and observed interfacial sliding between graphene and substrate. By artificially modifying the strength of the surface connection between graphene and substrate, the experimental data showed that a stronger interfacial connection can lead to a larger critical strain for interfacial sliding.…”

Section: Introductionmentioning

confidence: 99%

“…Jiang et al 11 used in-situ Raman spectroscopy and atomic force microscopy (AFM) to study the evolution of the sliding and buckling between graphene and a substrate during uniaxial loading and unloading, obtaining the critical strain for the onset of sliding at ∼0.3%; the critical compressive strain for buckling is approximately -0.7%. In addition, by analyzing the strain distribution of graphene, Jiang et al 11 and Xu et al 15 found that interfacial sliding that occurs at the edge as a result of interfacial shear stress reaches a critical level (the strength of the interfacial shear stress), and the sliding zone develops from the edge to the center. Xu et al 15 studied the size effects of graphene on a polyethylene terephthalate (PET) substrate under uniaxial tensile loading and observed that the critical strain of sliding varies for different sizes of graphene.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, by analyzing the strain distribution of graphene, Jiang et al 11 and Xu et al 15 found that interfacial sliding that occurs at the edge as a result of interfacial shear stress reaches a critical level (the strength of the interfacial shear stress), and the sliding zone develops from the edge to the center. Xu et al 15 studied the size effects of graphene on a polyethylene terephthalate (PET) substrate under uniaxial tensile loading and observed that the critical strain of sliding varies for different sizes of graphene.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical investigations of the interfacial sliding and buckling of graphene on a flexible substrate

Cui

Guo

2016

AIP Advances

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Two interfacial failure modes, shear sliding and buckling, of graphene on a flexible substrate subjected to uniaxial compression are investigated. The shear sliding starts at the edge region, and buckling starts at the middle region of graphene. Using shear-lag cohesive zone models and finite element (FE) simulations, the critical strain and maximum strain of graphene are predicted for the interfacial sliding failure. Then, the critical strain for the onset of buckling is derived via the theory of continuum mechanics with the van der Waals (vdW) interaction between graphene and the substrate surface taken into consideration. By comparison of the two critical failure strains and maximum strain of graphene, it is found that there exists a critical length of graphene. As the graphene length is larger than it, interfacial failure goes through four stages of development with increasing loading, including sliding and buckling. Conversely, the buckling of graphene will not occur. Finally, the influence of the interfacial adhesion energy and geometric size of graphene on the critical strains for interfacial sliding and buckling are discussed.

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Section: The Critical Strain For Slidingmentioning

confidence: 99%

Section: The Critical Strain For Slidingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Theoretical investigations of the interfacial sliding and buckling of graphene on a flexible substrate

Cui

Guo

2016

AIP Advances

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Interfacial Mechanical Properties of Graphene/Substrate System: Measurement Methods and Experimental Analysis

Kang

et al. 2019

Handbook of Graphene

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Stretchable Transparent Conductors: from Micro/Macromechanics to Applications

Chen

Fang

et al. 2019

Advanced Materials

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electronics include stretchable solar cells, [2] stretchable organic light emitting diodes (OLEDs), [3] stretchable field-effect transistors (FETs), [4] stretchable supercapacitors, [5] stretchable actuators [6] and heaters, [7] etc. The emerging of stretchable electronics has foreseen the revolution of future electronics, ranging from design, shape and functions to installation, applications and even user experience. For example, stretchable optoelectronics, such as solar cells and OLEDs, are conformable, rollable and foldable. They can be installed on irregularly shaped roof or side walls of buildings, vehicles and other public utilities. Similarly, stretchable sensors used as e-skin can not only fit motions at joints of human or robots with tensile strain of large than 100%, [1e] but also sense signals related to strain, temperature, humidity and even blood pressure. [8] Moreover, the integration of different kinds of stretchable electronics may exhibit diversity in functions. [9] For instance, wearable devices of stretchable energy harvesting and storage electronics combining with stretchable sensors and heaters may sense the biomedical signal and keep the patient warm with the power collected from solar/friction energy. More potential applications of stretchable electronics in different fields, not restricted to the above examples, will be seen in the future.Stretchable transparent conductors (STCs) are fundamental components in stretchable electronics. They generally consist of a stretchable transparent polymeric substrate and a layer of conducting elements on or embedded in the substrate. The substrates involve poly(dimethyl siloxane) (PDMS) and polyacrylate-based elastomers [10] while the conducting elements include conducting polymers, [11] metal nanowires, [12] carbon nanotubes (CNTs), [13] graphene [14] or their hybrids. The substrates generally show transmittance of higher than 90% [15] and can be stretched to a strain of larger than 100%, e.g., PDMS and VHB (a typical acrylic elastomer) could exhibit a fracture tensile strain up to ≈160% [16] and several hundred percentages, [6a,17] respectively. STCs could be considered as the combination of transparent conductors and stretchable conductors; [18] they can simultaneously show stable conductivity and transparency upon deformation, including bending, folding, twisting, crumpling, stretching, etc. The transparency of STCs is attributed to the low attenuation of visible light by the substrate and the conducting layer. The conductivity is obtained due to the continuity of conducting layer either via uniform film or the connection of Stretchable transparent conductors (STCs), generally consisting of conducting networks and stretchable transparent elastomers, can maintain stable conductivity and transparency even at large tensile strain, beyond the reach of rigid/flexible transparent conductors. They are essential components in stretchable/wearable electronics for using on irregular 3D conformable surfaces and have attracted tremendous attention ...

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An experimental investigation on the tangential interfacial properties of graphene: Size effect

Cited by 24 publications

References 17 publications

Theoretical investigations of the interfacial sliding and buckling of graphene on a flexible substrate

Theoretical investigations of the interfacial sliding and buckling of graphene on a flexible substrate

Interfacial Mechanical Properties of Graphene/Substrate System: Measurement Methods and Experimental Analysis

Stretchable Transparent Conductors: from Micro/Macromechanics to Applications

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