The fundamental mechanics relations governing the geometry of nanoclusters are reviewed and illustrations are presented. The Nanofabrication processes namely, 'top-down i.e., it all begins from a bulk piece of material, which is then gradually or step-by-step removed to form objects in the nanometer-size regime and 'bottom-up' i.e., it all begins from atoms and molecules that get rearranged and assembled to larger nanostructures. It is the new paradigm for synthesis in the nanotechnology world as the 'bottom-up' approach allows a creation of different types of nano clusters. The Forces and Interactions of Self-Assembly and their relevant bonds affecting the bottom up fabrication have been discussed. Finally classical nucleation theory for clusters formation has been reported.
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