Patent ID: 7821787

Claim:
A system for cooling comprising: a structure having an opening extending through said structure; a pumping device behind said structure that drives a jet of coolant through said opening; a target element positioned in front of said structure so that said jet, driven through said opening, is directed toward said target element; and a transducer positioned between said structure and said target element, said transducer producing an output signal for perturbing said jet to control an oscillation of said jet in order to stabilize said jet for impingement with a predetermined location on said target element, wherein a predetermined distance between said opening and said target element, a size of said opening, and a velocity at which said pumping device drives said jet through said opening causes said jet to flow in an unsteady laminar flow mode, and perturbation of said jet by said output signal causes a tip of said jet to be substantially non-varying in position over time.