This study aims to perform optimizatione to achieve the best diffusion control between the channels by designing and analysing a microfluidic-based micromixer. The design and analysis of the micromixer were made with the COMSOL Multiphysics program. Some input and output parameters must be defined for diffusion control of the micromixer. Among these parameters, inputs are the diffusion coefficient and inlet flow rate, while outputs are velocity, pressure, and concentration. Each input parameter in the microfluidic chip affects the output of the system. To make the diffusion control in the most optimum way, the data were obtained by making much analysis. The data obtained from this program was also provided with the Fuzzy Logic method to optimize the microfluidic chip. The diffusion coefficient value (5E-11 m²/s) should be given to the channels to achieve the optimum diffusion between the micromixer channels, if the inlet flow rate value (15E-15 m³/s) is the output value of the system, the velocity is 0.09 mm/s. The pressure is 2 Pa, and the concentration is 0.45 mol/m³. These values are the optimum values obtained from the analysis without damaging the liquid’s microfluidic channels supplied to the micromixer’s inlet.

中文翻译：

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基于层流扩散的微流控微混合器的设计与分析

这项研究旨在通过设计和分析基于微流体的微混合器来进行优化，以实现通道之间的最佳扩散控制。微型混合器的设计和分析是通过COMSOL Multiphysics程序进行的。为了微混合器的扩散控制，必须定义一些输入和输出参数。在这些参数中，输入是扩散系数和入口流速，而输出是速度，压力和浓度。微流体芯片中的每个输入参数都会影响系统的输出。为了以最佳方式进行扩散控制，需要进行大量分析才能获得数据。从该程序获得的数据还提供了模糊逻辑方法，以优化微流控芯片。扩散系数值（5E-11 m ²/ s）应该给予通道以实现微混合器通道之间的最佳扩散，如果入口流速值（15E-15 m ³ / s）是系统的输出值，则速度为0.09 mm / s。压力为2Pa，浓度为0.45mol / m ³。这些值是从分析中获得的最佳值，而不会损坏供应到微混合器入口的液体微流体通道。