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We report on the response to the ambient air humidity of a surface acoustic wave (SAW) in YZ LiNbO3 substrate with the 200 nm-thick multi-layer graphene sheets deposited by chemical reduction from graphene oxide. With increasing relative humidity (RH), the SAW velocity decreases and the SAW attenuation increases. At humidity values below 60-65%, the SAW velocity linearly depends on RH with the slope...
In this work, a careful study on the electronic properties of 6-ZGNR with Pt doping at different sites using density functional theory, implemented in the CASTEP code was reported. Five different substitutional sites from the center to the edge of the 6-ZGNR were considered. The computational result indicates the antiferromagnetic (AFM) state is the most favorable for all the structures. So the band...
The properties of graphene nanoribbons can be modified by impurity atoms. Recently, the migration of individual gold atoms doped in graphenic structures has been studied in situ by high-resolution transmission electron microscopy (HRTEM) [1]. Later, density-functional theory calculations were used to explain the dynamics of the gold atoms on substitutional sites in graphene [2]. In this article, we...
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