Methods and systems analyze historical NXD traffic to predict future DNS traffic. The rectifying device includes a first electrode formed in a flat shape, an insulating layer deposited on the first electrode and a second electrode formed on a preset region of the insulating layer in a nanaopillar shape in a longitudinal direction to be asymmetrical to the first electrode, thereby increasing current flow. The solder reservoir carrier and the semiconductor device are moved away from each other so that additional solder is deposited and a solder column is grown on the semiconductor device. The diaphragm assumes its original position when the pressure within the accumulation chamber falls below a threshold pressure.