Patent ID: 8546064
Filing Date: 2013-10-01
Classification: H01M,Y02E

Abstract:
1. A method for fabricating a flowfield, the method comprising the steps of: providing a substrate; providing a plurality of radiation sources configured to generate a plurality of radiation beams; disposing a radiation-sensitive material on the substrate; placing an imaging mask between the plurality of radiation sources and the radiation-sensitive material, the imaging mask having a plurality of substantially radiation-transparent apertures, the substantially radiation-transparent apertures including a first portion and a second portion, the first portion of the apertures configured to shape the radiation beams from the radiation sources to form a plurality of truss elements in the radiation-sensitive material, and the second portion of the apertures configured to shape the radiation beams from the radiation sources to form a plurality of wall elements in the radiation-sensitive material; and exposing the radiation-sensitive material to the plurality of radiation beams through the first portion of the radiation-transparent apertures and the second portion of the radiation-transparent apertures in the imaging mask, to form the plurality of truss elements and the plurality of wall elements in the radiation-sensitive material, the truss elements forming a plurality of trusses configured to support an adjacent diffusion medium layer, and the wall elements disposed between the plurality of trusses and defining a fluid path along a length of the substrate.