Reticulated annular capillary gas chromatography column and method for forming reticulated annular capillary gas chromatography column

A reticulated annular capillary GC column (100) is disclosed including a capillary wall (102), a core (104) disposed within the capillary wall, an annulus (106) disposed between said capillary wall and said core, and vanes (108) disposed in said annulus. The vanes extend along the length (110) of the capillary wall for less than the length of the capillary wall. The vanes define a reticulated flow path (118) through the annulus. The vanes structurally support the core within the capillary wall. A method for forming the reticulated annular capillary GC column is disclosed including forming a preform master pattern by an additive manufacturing technique, the preform master pattern including a preform wall, a preform core, a preform annulus disposed between the preform wall and the preform core, and struts disposed in the preform annulus. A preform is cast from the preform master pattern, and the preform is drawn down, forming the reticulated annular capillary GC column.