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The classical Kirchhoff's superposition law is hard to realize in the molecular scale devices because the coupling between the juxtaposed molecules can lead to constructive or destructive quantum interferences [Vazquez et al. nature nanotechnology 2012, 7, 663; Zhu et al. Phys. Rev. B 2014, 89, 085427]. In view of this, we try to eliminate the quantum interference between the juxtaposed molecules...
Short multiwall carbon nanotubes (MWCNTs) were synthesized by pyrolysis of a polysilazane-polyvinyl pyrrolidone mixture that was characterized by dynamic light scattering. It was found that the polymer mixture had a tube-shaped aggregate at the nanometer scale. The MWCNTs are −30nm in diameter and −500nm in length. Structural characterization revealed that they have a well-developed tubular structure...
The reported hydrogen uptake of carbon nanotubes (CNTs) has been the subject of much controversy. We have measured the hydrogen uptake capacity of different types of CNTs using a volumetric measurement setup specifically-designed for CNTs. It was found that under a pressure of ∼12MPa and at room temperature, the hydrogen storage capacity of the CNTs is less than 1.7wt.%, which is far below the benchmark...
Carbon microcoils (CMCs) were prepared by catalytic pyrolysis of acetylene containing a small amount of thiophene as a promoter at 973–1073K using nickel foam catalyst which was also used as a substrate, with the CMC yield of about 62% relative to the introduced carbon source. The morphology of the product was observed by scanning electron microscopy (SEM). The morphology of the nickel foam was changed...
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