نتایج جستجو برای: stone wales defect
تعداد نتایج: 137725 فیلتر نتایج به سال:
The graphene microchannel heat sinks have attracted extensive attention due to its high cooling efficiency in microelectric devices. interfacial thermal resistance (ITR) between as the bottom layer of and water is one key factors good working performance. In this paper, impacts structure defects surfaces on ITR graphene–water interface are investigated using molecular dynamic simulations. resul...
A new Dobson Umkehr ozone profile retrieval method optimising information content and resolution K. Stone, M. B. Tully, S. K. Rhodes, and R. Schofield School of Earth Sciences, University of Melbourne, Victoria, 3010, Australia ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, New South Wales, 2052, Australia Bureau of Meteorology, Melbourne, Victoria, ...
Two-dimensional covalent organic frameworks (2D COFs) are an interesting class of 2D materials since their reticular synthesis allows the tailored design structures and functionalities. For many applications mechanical stability performance is important aspect. Here, we use a computational approach involving density-functional based tight-binding method to calculate in-plane elastic properties ...
Despite the unique occurrences of structural defects in graphene synthesis, the fracture mechanism of a defective graphene sheet has not been fully understood due to the complexities of the defects. In this study, the fracture mechanism of the monolayer graphene with four common types of defects (single vacancy defect, divacancy defect, Stone-Wales defect and line vacancy defect) were investiga...
A molecular dynamics simulation study on the interfacial strengthening between defected graphene and polypropylene matrix is implemented. As intrinsic defects in single layer graphene, oxidation, Thrower-Stone-Wales(TSW) defect, and Adatom defect are considered. On the transversely isotropic nanocomposites unit cell embedding different defected graphene, transversely isotropic stress-strain rel...
The graphene interlayer spacing in pure graphite is known to have a minimum value of dmin=0.3354 nm, while defective graphites typically have larger interlayer spacings. Using x-ray diffraction, we find that the graphene interlayer spacing in multi-walled carbon nanofibers heat treated above 2800 K is distinctly smaller than dmin. To explain this unusual observation, we investigate the structur...
We use scanning tunneling microscopy and X-ray spectroscopy to characterize the atomic and electronic structure of boron-doped and nitrogen-doped graphene created by chemical vapor deposition on copper substrates. Microscopic measurements show that boron, like nitrogen, incorporates into the carbon lattice primarily in the graphitic form and contributes ~0.5 carriers into the graphene sheet per...
We performed first-principles calculations to reveal the possibility of applying pristine, defective, and B-doped graphene in feasible negative electrode materials of ion batteries. It is found that the barriers for ions are too high to diffuse through the original graphene, however the reduced barriers are obtained by introducing defects (single vacancy, double vacancy, Stone-Wales defect) in ...
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