Patent ID: 8857501

Claim:
A method of forming an entrainment heat sink device, comprising: forming an opening through a first material and an opening through a second material; forming a dimple having a trapezoidal cross-section in the first material and a dimple having a trapezoidal cross-section in the second material such that the opening through the first material is located on a side wall of the trapezoidal cross-section in the first material and the opening through the second material is located on a side wall of the trapezoidal cross-section in the second material; and attaching the first material to a second material, wherein: the first material has a first trench formed therein and the second material has a second trench formed therein such that the dimple in the first material is in fluidic communication with the first trench and the dimple in the second material is in fluidic communication with the second trench; and the first material is attached to the second material such that the first trench is adjacent the second trench.