Patent ID: 8080293

Claim:
A capillary structure comprising: a substrate; a hollow encapsulation structure including an anchor portion attached to the substrate and a free end portion extending over the substrate and curving away from the substrate, wherein the hollow encapsulation structure comprises a lower wall, an upper wall, and parallel side walls extending between the lower wall and the upper wall such that the lower, upper and parallel side walls form a substantially rectangular cross-section forming a hollow conduit extending between a first opening defined at the free end portion and a second opening defined at the anchor portion, wherein the lower, upper and parallel side walls consist essentially of an encapsulation material such that said hollow encapsulation structure is formed solely by the encapsulation material, and wherein the hollow encapsulation structure further comprises a second upper wall and a second pair of parallel side walls extending between the lower wall and the second upper wall such that the lower wall, second upper wall and second pair of parallel side walls form a substantially rectangular cross-section forming a second hollow conduit.