Nanoparticle formation from their respective precursors through bottom-up method is a very fascinating practice in nanotechnology. This research contribution discusses two promising bottom-up methods: i) controlled precipitation of Ni, Fe, and Co nanoparticles and reinforcement with silicate through modified Stöber method and ii) chemical vapor deposition of nanocarbon from methane. Experimental results reveal that metal oxide particles were formed as single-crystal nanoparticles aft...