Validation of Velocity in Microchannels with a Retention System due to Unevenness Manufactured by 3D Printing (SLA)

Microfluidics is an efficient technology for controlling fluid movement in microchannels at extremely low speeds. The main advantage lies in the significant reduction of samples and reagents, thereby reducing costs and analysis times. Three devices with retention systems are introduced that are manufactured through 3D printing (SLA) incorporating microchannels with variations in levels and dimensions. Fluid velocity is studied, considering factors such as channel width, length, rounding, height, and shape. The analysis of velocity along the channel reveals liquid retention at the devices' maximum point, ensuring more precise results in microdevices.