Apparatus and method of forming channels in a heat-exchanging device

A heat exchanger comprising:

• a. a manifold layer defining a plurality of apertures;
• b. an interface layer comprising a plurality of narrowing trenches, each aperture positioned on one side of a narrowing trench, whereby a path is defined from a first aperture, through a narrowing trench, and to a second aperture;
• and
• c. an intermediate layer having a plurality of openings positioned over the plurality of apertures between the manifold layer and the interface layer.

A method of forming a heat exchanger, comprising:

• a. forming a manifold layer defining a plurality of apertures;
• b. forming an interface layer comprising one or more narrowing trenches, each aperture positioned on one side of a narrowing trench, whereby a path is defined from a first aperture, through a narrowing trench, and to a second aperture;
• and
• a. coupling an intermediate layer between the manifold layer and the interface layer, the intermediate layer comprising a plurality of openings positioned over the plurality of apertures, thereby controlling the flow of a cooling material to the paths.

A heat exchanger comprising:

• a. a manifold layer defining a plurality of apertures;
• b. an interface layer comprising a plurality of narrowing trenches, each aperture positioned on one side of a narrowing trench, whereby a path is defined from a first aperture, through a narrowing trench, and to a second aperture;
• and
• c. an intermediate layer positioned between the manifold layer and the interface layer, the intermediate layer comprising a plurality of openings positioned over the plurality of apertures, thereby controlling the flow of a cooling material to the paths.