Abstract
Real-time monitoring and manipulating various liquids in the microflow channels have great potentials in micro total analysis system. A novel microfluidics volume optical monitoring system (MVOMS) is proposed. Functional channels embedded with hollow cylindrical waveguide (HCW) are integrated in MVOMS, which is convenient to realize the real-time monitoring and manipulating microfluidic. The microfluidic volume can be monitored in real time and the sensitivity can reach 20.0 dB/μL. In addition, the MVOMS can realize the monitoring of various liquid for the designed sensor structure is insensitive to the refractive index of liquid. The temperature cross and the pressure cross are tested that can be ignored. Microfluidic volume monitoring, delivering and mixing can be achieved in MVOMS. On this basis, we design an integrated light-driven microfluidic quantitative sampling system, which can sample a specific volume of microfluidic in microchips automatically and accurately.
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