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Deposition and manipulation of nickel nanoparticles

In this paper, we describe the deposition of nickel nanoparticles and nanowires in the 'V' shaped grooves of highly oriented pyrolytic graphite (HOPG). Freshly cleaved HOPG was exposed to a plating solution of nickel and electro chemically deposited by cyclic voltametry. The morphology of the deposited nanoparticles was studied using an atomic force microscope (AFM) in non-contact mode. These nanoparticles were manipulated by magnetic field. The critical force to displace the nanoparticles was estimated using contact mode of AFM.