MICROFLUIDIC PLATFORMS FOR ON-CHIP FORMULATION AND SMALL-ANGLE X-RAY ANALYSIS OF THE PHASE BEHAVIOR OF LIPID/WATER MIXTURES
2011
We present a microfluidic platform for on-chip formulation and X-ray analysis of lipidic mesophases formed upon mixing lipids and water. The platform is designed to study the effect of detergents on the phase behavior of lipid/water mixtures. The platform allows automated preparation of multiple samples of different composition from stock solutions and subsequent on-chip small-angle X-ray diffraction (SAXS) data collection. To ensure X-ray transparency of the platform we used thin layers of cyclic olefin copolymer (COC) and PDMS. The viability of the platform is demonstrated by mapping out a section of the phase diagram for lipid monoolein mixed with solutions of detergent -octylglucoside.
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