Thickness‐Dependent Strain Effect on the Deformation of the Graphene‐Encapsulated Au Nanoparticles

Abstract

The strain effect on graphene-encapsulated Au nanoparticles is investigated. A finite-element calculation is performed to simulate the strain distribution and morphology of the monolayer and multilayer graphene-encapsulated Au nanoparticles, respectively. It can be found that the inhomogeneous strain and deformation are enhanced with the increasing shrinkage of the graphene shell. Moreover, the strain distribution and deformation are very sensitive to the layer number of the graphene shell. Especially, the inhomogeneous strain at the interface between the graphene shell and encapsulated Au nanoparticles is strongly tuned by the graphene thickness. For the mono- and bilayer graphene-encapsulated Au nanoparticles, the dramatic shape transformation can be observed. However, with increasing the graphene thickness further, there is hardly deformation for the encapsulated Au nanoparticles. These simulated results indicate that the strain and deformation can be designed by the graphene layer thickness, which provides an opportunity to engineer the structure and morphology of the graphene-encapsulated nanoparticles.

EMI Shielding of the Hydrophobic, Flexible, Lightweight Carbonless Nano-Plate Composites

“…This gives rise the notion that the MXene without surface functional groups replaces the Co nanoplate [ 11 ]. The thickness of the single layer graphene is 0.335 nm while 3.185 nm thickness showed by 7-layer graphene [ 12 ]. Hence, the metal nanoplate can be replaced by multi-layer graphene and MXene.…”

“…Hence, the metal nanoplate can be replaced by multi-layer graphene and MXene. The MXene, and graphene synthesis are multistep process need more time, cost, various instruments, and chemicals, However, metal nanoplate synthesis is single step process [ 11 , 12 ]. In addition, nanoplates-polymer composites are better EMI shielding material than MXene and graphene polymer composition.…”

A Novel Strategy for Sustainable Synthesis of Soluble‐Graphene by a Herb Delphinium denudatum Root Extract for Use as Light‐Weight Supercapacitors

“…4, the average thickness of D‐graphene was observed to be around 3–5 nm. From the literature reports the thickness of single‐layer graphene was 0.335 nm, which means two single graphene layers can measure approximately 1 nm thick when accounting for the d spacing . Therefore, D‐graphene might be composed of 6–10 graphene sheets.…”

Nanomechanical and Macrotribological Properties of CVD‐Grown Graphene as a Middle Layer between Metal Pt Cylinders and SiO2/Si Substrate

“…Here, the loading displacement is less than 220 nm. The results show that the interface between Pt and graphene and graphene and SiO 2 film will affect the change in the elastic modulus of Pt/graphene and could be attributed to the effect of graphene due to its high strength and large elastic modulus [16]. This is to observe that the elastic modulus of Pt/SiO 2 rapidly increases when loaded under 20 mN and approaches that of Pt/graphene.…”