Abstract
In this work, we studied the effect of pulse (PC) and pulse-reverse current (PRC) on the microstructure and nanomechanical responses of the individual micro-pillars of electrodeposited nickels. It was found that the PC produced a heterogeneous microstructure consisted of coarser columnar grains and a multitude of nanocrystals, whereas PRC resulted in a homogeneous nano-grain distribution due to disrupted grain growth and facilitated nucleation. The nickel micro-pillar with uniform nanocrystalline texture also exhibited enhanced hardness and plasticity. The micro-patterned metal sheets with a combination of high mechanical strength, good ductility, and flexibility are achievable when PRC is implemented in the electrodeposition program for imprint lithography applications.
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