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A microfabricated separation column designed for ultimate use in a wearable gas chromatographic micro-analytical system (μGC) for analyzing mixtures of airborne volatile organic compounds (VOC) is described. The monolithic μcolumn chip measures 7.1×2.7×0.075cm and contains a 6-m long, 250×140μm deep-reactive-ion-etched Si channel with a Pyrex cap, wall-coated with a polydimethylsiloxane (PDMS) stationary...
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