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The minimum‐energy geometrical structure of the regioregular head‐to‐tail poly(3‐hexylthiophene) (rr‐HT‐P3HT) polymer has been addressed by means of density functional theory (DFT) calculations which include long‐range (van der Waals) interactions. The problem of the P3HT structure has been debated in the literature in the last decades mainly for what concerns the arrangement of the alkyl side chains...
The real‐time formation of Si single layers on Ag(110) and Ag(111) has been investigated at different temperatures, by a combination of scanning tunnelling microscopy, grazing incidence X‐ray diffraction, optical differential reflectance spectroscopy and density functional theory. It is shown that the reactivity of the Ag substrate with the Si atoms is important. The formation of Si nanoribbons on...
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