Feasibility demonstration of mEDM for fabrication of arrayed micro pin-fins of complex cross-sections

Abstract

Thermal management in microelectronics components through micro pin-fins heat sinks is well understood. This work aims to propose an unexplored methodology for fabrication of such MPFs having crosssections in shapes of droplet, aerofoil, piranha and diamond of dimensions as less as 200 mm and height up to 1200 mm. Density of these pin-fins has been achieved more than 4 pins/mm2 on brass plates. The methodology is basically a retrieval of mEDM which has been combined with LASER micromachining to achieve the goal. Research directions for possible improvement in ‘quality of the pin-fins’ and ‘material removal rate’ have been proposed at the end