Helical coil buckling mechanism for a stiff nanowire on an elastomeric substrate

Chen, Youlong; Liu, Yilun; Yan, Yuan; Zhu, Yong; Chen, Xi

doi:10.1016/j.jmps.2016.05.020

Cited by 43 publications

(15 citation statements)

References 46 publications

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“…This type of 2D-3D geometric transformation follows from a process of compressive buckling that can be analyzed quantitatively using a finite-deformation model 113 . Similar processes can form coiled nanowires 114-116 .…”

Section: Helical Designmentioning

confidence: 82%

Design and application of ‘J-shaped’ stress–strain behavior in stretchable electronics: a review

Feng

et al. 2017

Lab Chip

140

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A variety of natural biological tissues (e.g., skin, ligaments, spider silk, blood vessel) exhibit ‘J-shaped’ stress-strain behavior, thereby combining soft, compliant mechanics and large levels of stretchability, with a natural ‘strain-limiting’ mechanism to prevent damage from excessive strain. Synthetic materials with similar stress-strain behaviors have potential utility in many promising applications, such as tissue engineering (to reproduce the nonlinear mechanical properties of real biological tissues) and biomedical devices (to enable natural, comfortable integration of stretchable electronics with biological tissues/organs). Recent advances in this field encompass developments of novel material/structure concepts, fabrication approaches, and unique device applications. This review highlights five representative strategies, including designs that involve open network, wavy and wrinkled morphoologies, helical layouts, kirigami and origami constructs, and textile formats. Discussions focus on the underlying ideas, the fabrication/assembly routes, and the microstructure-property relationships that are essential for optimization of the desired ‘J-shaped’ stress-strain responses. Demonstration applications provide examples of the use of these designs in deformable electronics and biomedical devices that offer soft, compliant mechanics but with inherent robustness against damage from excessive deformation. We conclude with some perspectives on challenges and opportunities for future research.

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Section: Helical Designmentioning

confidence: 82%

Design and application of ‘J-shaped’ stress–strain behavior in stretchable electronics: a review

Feng

et al. 2017

Lab Chip

140

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“…Complex 3D buckling patterns, such as helical, spring-like, and so on, are feasible by compressing thin film or nanofibers on a soft substrate, which can be used to fabricate micro/nanostructures in extremely complex geometries. 37 Chen et al 38,39 studied the transition from the in-plane buckling to the helical buckling for the SiNW on the PDMS substrate (Fig. 7a, b).…”

Section: Mapping Electronics/structures Into 3d Complex Shapesmentioning

confidence: 99%

Buckling analysis in stretchable electronics

et al. 2017

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In the last decade, stretchable electronics evolved as a class of novel systems that have electronic performances equal to established semiconductor technologies, but can be stretched, compressed, and twisted like a rubber band. The compliance and stretchability of these electronics allow them to conform and mount to soft, elastic biological organs and tissues, thereby providing attractive opportunities in health care and bio-sensing. Majority of stretchable electronic systems use an elastomeric substrate to carry an ultrathin circuit mesh that consists of sparsely distributed stiff, thin-film electronic components interconnected by various forms of stretchable metal strips or low-dimension materials. During the fabrication processes and application of stretchable electronics, the thin-film components or nanomaterials undergo different kinds of in-plane deformation that often leads to out-ofplane or lateral buckling, in-surface buckling, or a combination of all. A lot of creative concepts and ideas have been developed to control and harness buckling behaviors, commonly regarded as pervasive occurrences in structural designs, to facilitate fabrication of stretchable structures, or to enhance stretchability. This paper provides a brief review of recent progresses on buckling analysis in stretchable electronics. Detailed buckling mechanics reveals important correlations between the geometric/material properties and system performance (e.g., mechanical robustness, deformability, structural architecture, and control). These mechanics models and analysis provide insights to design and optimize stretchable electronics for a wide range of important applications.

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“…For instance, interface sliding was observed between Si NWs and PDMS substrate [245]; with surface treatment of the PDMS substrate, the static friction (interfacial strength) increased [81] and the interface sliding was largely suppressed. The interface sliding played an important role in the NW buckling shape [265,266]. Shear-lag models have been used to analyze the shear stress transfer between graphene and substrate [267,268], which can be extended to NWs and substrate too.…”

Section: Flexible and Stretchable Electronics Semiconductormentioning

confidence: 99%

Mechanics of Crystalline Nanowires: An Experimental Perspective

Zhu

2017

Applied Mechanics Reviews

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A wide variety of crystalline nanowires (NWs) with outstanding mechanical properties have recently emerged. Measuring their mechanical properties and understanding their deformation mechanisms are of important relevance to many of their device applications. On the other hand, such crystalline NWs can provide an unprecedented platform for probing mechanics at the nanoscale. While challenging, the field of experimental mechanics of crystalline nanowires has emerged and seen exciting progress in the past decade. This review summarizes recent advances in this field, focusing on major experimental methods using atomic force microscope (AFM) and electron microscopes and key results on mechanics of crystalline nanowires learned from such experimental studies. Advances in several selected topics are discussed including elasticity, fracture, plasticity, and anelasticity. Finally, this review surveys some applications of crystalline nanowires such as flexible and stretchable electronics, nanocomposites, nanoelectromechanical systems (NEMS), energy harvesting and storage, and strain engineering, where mechanics plays a key role.

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Helical coil buckling mechanism for a stiff nanowire on an elastomeric substrate

Cited by 43 publications

References 46 publications

Design and application of ‘J-shaped’ stress–strain behavior in stretchable electronics: a review

Design and application of ‘J-shaped’ stress–strain behavior in stretchable electronics: a review

Buckling analysis in stretchable electronics

Mechanics of Crystalline Nanowires: An Experimental Perspective

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