Microchip-based chromatographic separation device has multiple independent stationary phase tracks of silicon or silicon dioxide and can be integrated into compact sensor element

摘要

A silicon wafer (10) has one or more, stationary phase, chromatographic tracks (11) of nano-/micro-porous silicon or silicon dioxide, typically of 30-35% porosity and 20-50 Microm pore diameter. The track compositions and operating conditions, e.g. temperature, may be the same or different.