Thickness-dependent Crack Propagation in Uniaxially Strained Conducting Graphene Oxide Films on Flexible Substrates

Sakorikar, Tushar; Kavitha, Maheswari Kavirajan; Vayalamkuzhi, Pramitha; Jaiswal, Manu

doi:10.1038/s41598-017-02703-2

Cited by 34 publications

(26 citation statements)

References 45 publications

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“…S1, small drop spacing and thicker films can induce microcracks with higher density and larger crack openings upon strain. This higher sensitivity to deformation leads eventually to a higher gauge factor, as also observed in [49] in reduced graphene oxide.…”

Section: Resultsmentioning

confidence: 56%

Inkjet printed 2D-crystal based strain gauges on paper

Casiraghi¹,

Macucci²,

Parvez³

et al. 2018

Carbon

105

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We present an investigation of inkjet printed strain gauges based on two-dimensional (2D) materials. The technology leverages water-based and biocompatible inks to fabricate strain measurement devices on flexible substrates such as paper. We demonstrate that the device performance and sensitivity are strongly dependent on the printing parameter (i.e., dropspacing, number of printing passes, etc.). We show that values of the Gauge Factor up to 125 can be obtained, with large sensitivity (>20%) even when small strains (0.3%) are applied. Furthermore, we provide preliminary examples of heterostructure-based strain sensors, enabled by the inkjet printing technology.

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Section: Resultsmentioning

confidence: 56%

Inkjet printed 2D-crystal based strain gauges on paper

Casiraghi¹,

Macucci²,

Parvez³

et al. 2018

Carbon

105

View full text Add to dashboard Cite

show abstract

“…Finite element simulations showed that the substrate delocalizes the strain, so that the metal film can be extended indefinitely, limited only by rupture of the polymer substrate [ 182 ]. However, a discrepancy between experiment and theory may arise due to the influence of the very small particle size and inadequate interfacial adhesion [ 183 ]. Since debonding plays an important role in this failure mechanism, an adhesive layer that improves adhesion between the film and substrate causes strain localization and cracking of the copper film.…”

Section: Structural Designs For Flexible Sensory Systemsmentioning

confidence: 99%

Flexible Sensory Systems: Structural Approaches

et al. 2022

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Biology is characterized by smooth, elastic, and nonplanar surfaces; as a consequence, soft electronics that enable interfacing with nonplanar surfaces allow applications that could not be achieved with the rigid and integrated circuits that exist today. Here, we review the latest examples of technologies and methods that can replace elasticity through a structural approach; these approaches can modify mechanical properties, thereby improving performance, while maintaining the existing material integrity. Furthermore, an overview of the recent progress in wave/wrinkle, stretchable interconnect, origami/kirigami, crack, nano/micro, and textile structures is provided. Finally, potential applications and expected developments in soft electronics are discussed.

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“…This condition is caused by the thermal coefficient difference between two or more materials. The stress in the films is highly dependent on annealing temperature, thickness, and chemical contents [34][35][36]. Besides, the different transmittances may be due to the various morphologies, shapes, defect states, and sizes as well as porous structures when varying the number of NiO layers on  -Fe2O3 structures [37].…”

Section: Transmittance and Absorbancementioning

confidence: 99%

PHYSICAL PROPERTIES OF NOVEL α-Fe2O3/NiO HETEROSTRUCTURES THROUGH IMMERSION/ SOL–GEL SPIN COATING METHOD: DIFFERENT DEPOSITION NUMBERS OF NiO LAYER

et al. 2021

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The novel hematite (α-Fe2O3)/nickel oxide (NiO) heterostructures were grown on fluorine-doped tin oxide (FTO) coated glass substrates at various deposited NiO of 3, 5, and 7 layers. The heterostructures were successfully synthesized using the immersion and sol–gel spin coating methods for α-Fe2O3 and NiO films, respectively. The field emission scanning electron microscopy analysis showed that each sample of α-Fe2O3/NiO heterostructures has a unique surface morphology when deposited with different NiO layers. The X-ray diffraction pattern shows that the number of NiO layers affected the diffraction peaks. The NiO diffraction peak intensity at (111) plane increased when the deposition number of NiO layer was increased. The crystallite sizes of NiO were 35.4, 33.6, and 38.0 nm for 3-, 5-, and 7-layer NiO, respectively. The interplanar spacing, lattice parameter, and unit cell volume indicate NiO with 3-layer as the highest, while 5- and 7-layer had the same values. Meanwhile, the strain and stress values show the compressive strain and tensile stress, respectively. The optical properties reveal that the highest transmittance and the lowest absorbance percentages were recorded for a 3-layer NiO sample. In contrast, the lowest transmittance and the highest absorbance percentages were obtained for the sample with 5-layer NiO. Different thicknesses and morphologies of heterostructures explained these situations. In addition, each unique heterostructure of α-Fe2O3/NiO with high visible light absorption nature is perceived to reduce the bandgap energy and has the potential to be used in sensor and solar cell applications.

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Thickness-dependent Crack Propagation in Uniaxially Strained Conducting Graphene Oxide Films on Flexible Substrates

Cited by 34 publications

References 45 publications

Inkjet printed 2D-crystal based strain gauges on paper

Inkjet printed 2D-crystal based strain gauges on paper

Flexible Sensory Systems: Structural Approaches

PHYSICAL PROPERTIES OF NOVEL α-Fe2O3/NiO HETEROSTRUCTURES THROUGH IMMERSION/ SOL–GEL SPIN COATING METHOD: DIFFERENT DEPOSITION NUMBERS OF NiO LAYER

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