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Article
Open AccessIdentification of individual and few layers of WS2 using Raman Spectroscopy
The Raman scattering of single- and few-layered WS2 is studied as a function of the number of S-W-S layers and the excitation wavelength in the visible range (488, 514 and 647 nm). For the three excitation wavele...
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Article
Open AccessNitrogen-doped graphene: beyond single substitution and enhanced molecular sensing
Graphene is a two-dimensional network in which sp2-hybridized carbon atoms are arranged in two different triangular sub-lattices (A and B). By incorporating nitrogen atoms into graphene, its physico-chemical prop...
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Article
Open AccessEnhanced ferromagnetism in ZnO nanoribbons and clusters passivated with sulfur
Inspired by recent experimental results, the electronic and magnetic properties of sulfur-passivated ZnO clusters and zigzag nanoribbons have been studied using first principles calculations in the framework o...