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Interfacial adhesion energy between as-grown graphene and its growth substrate reveals the nature of bonding, as well as provides insights for large-scale roll-to roll graphene transfer. In this study, a novel sample preparation scheme was developed and a unique quasi-static blister test was performed to measure the adhesion energy between as-grown graphene and its copper foil substrate. The copper...
In the current study, we propose an efficient thermodynamic method to precisely control multi-walled carbon nanotubes (MWCNTs) at the interface of a co-continuous PS/PMMA blend to design conductive polymer composites with ultralow percolation threshold. The achievement of the interfacial distribution of MWCNTs is attributed to the balance of π-π interactions between PS and MWCNT surfaces and dipole-dipole...
Controlling magnetic transport through a single molecule remains one of the most fundamental challenges of spin electronics. Here, we investigate the effects of the redox reaction on the magnetic transport properties of a single anthraquinone (AQ) molecule connected to zigzag graphene nanoribbon electrodes by using the non-equilibrium Green's function formalism with density functional theory. Two...
Ising model with the anisotropy is abstracted based on a nano-graphene sandwich-like structure. The system consists of a ferromagnetic middle layer and two antiferromagnetic layers on the top and under the bottom. Multiple spin states are employed to the analysis of magnetic behavior for graphene-like molecules. The effective-field theory with correlations has been successfully applied to this, and...
Molecular spintronics is a new and emergent sub-area of spintronics that has the potential use in future information storage, magnetic sensing and quantum computing. We investigate the spin transport properties of a single benzene molecule connected to zigzag graphene nanoribbons (ZGNRs) by using a self-consistent ab initio approach which combines the non-equilibrium Green's function (NEGF) formalism...
A nano-graphene bilayer is described by a transverse Ising model with single-ion anisotropy. The upper layer consists of spin 3/2 with an antiferromagnetic exchange coupling, whereas the bottom layer composes of spin 5/2 with a ferromagnetic exchange coupling. Based on the effective-field theory with correlations the general formula for the magnetization is given. Magnetic properties of the system...
The concept of “double percolation”, i.e., conductive fillers are selectively located in one phase of a co-continuous polymer blend to form a percolated network in the selected phase, is widely used to reduce the percolation thresholds of conductive polymer composites to a fraction of their original values. However, it is expected that the percolation threshold can be significantly reduced further...
A diamond film was intermittently prepared by direct-current (DC) hot-cathode plasma chemical vapor deposition (PCVD). The intermittent growth was carried out by alternating deposition under methane flow for 20min and etching for 10min without methane flow. For comparison, a diamond film was continuously prepared under the same growth conditions without etching. Scanning electron microscopy, Raman...
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