Abstract
A new microfabricated gas chromatography column (µGC-column) called semi-packed column embedded high density elliptic cylindrical posts (SPC-HDECPs) was reported in this paper. There are six elliptic cylindrical posts in the cross-section perpendicular to the gas flow in the 250 μm-wide straight silicon microchannel of SPC- HDECPs. Compared to semi-packed columns with cylindrical posts (SPC-CPs) in identical micro-channel at the same effective width (130 μm), SPC-HDECPs have a 327% improvement in the number of theoretical plates of the octane due to the surface area is increased by 71%.
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