A Microfluidic Concentrator With a Porous Photothermal Evaporation Layer
Sample concentration affects the reaction efficiency and time of microfluidic chips.The operation of evaporation concentration is simple and universal,but there are some problems such as large steam transmission resistance and unstable evaporation interface.In this paper,a microfluidic photothermal evaporative concentrator with porous layer is designed.Commercial carbon paper is used to construct porous photothermal evaporation layer,which can improve the efficiency of steam transmission and effectively restrain the instability of evaporation interface.The concentration performance was studied by experiment and simulation.The results showed that the concentration effect could be adjusted by changing the light intensity and solution flow rate.The device designed in this paper is simple in structure,flexible in operation,and can be integrated with other microfluidic systems.
NETL
NSTL
万方数据
