The present paper aims at extracting key physical and chemical concepts for the development of inorganic nanomaterials with controlled size, shape, and topology. In particular, efforts are made to identify general guiding principles for the rational design of 0D, 1D, 2D and 3D architectures, focusing on selected model systems as representative case studies. To this aim, different strategies and approaches are discussed, in an attempt to unify concepts and ideas common to solid-, liquid- and gas-phase synthetic routes. Furthermore, the importance of tailoring the nanomaterial composition, structure and morphology is also highlighted in relation to their eventual technological applications.
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