Cold plate device for a two-phase cooling system

An apparatus, comprising:

• a first stackable layer that comprises a first channel formed within the first stackable layer, wherein the first channel receives a coolant fluid via an inlet port of the apparatus;
• a second stackable layer that comprises a second channel that provides a path for the coolant fluid to flow, wherein the first channel and the second channel form a set of expanding channels for the apparatus, and wherein a height of the set of expanding channels increases along a flow direction of the coolant fluid through the apparatus, and wherein the second channel comprises a patterned through-hole region of the second stackable layer, and comprises a through-hole region distinct from the patterned through-hole region and that provides a second path for the coolant fluid to flow between the inlet port and the first channel, and wherein a size of the through-hole region corresponds to a distance between a portion of the through-hole region and the patterned through-hole region;
• and
• an auxiliary channel that receives the coolant fluid from an inlet channel having the inlet port, wherein the auxiliary channel comprises a nozzle region that facilitates directed cooling for a hot spot region of the apparatus.