👉 The blade fluid, also known as a microchannel or microfluidic fluid, is a specialized liquid used in microfluidic devices to enhance mixing and heat transfer at the microscale. These fluids are typically engineered with extremely narrow channels, often in the range of tens to hundreds of micrometers, which significantly increases the surface area-to-volume ratio. This design facilitates efficient mixing through mechanisms like chaotic advection and enhanced diffusion, overcoming the limitations of laminar flow at small scales. The blade fluid's unique properties, such as low viscosity and high surface tension, further improve mixing efficiency and reduce the risk of clogging, making it indispensable in applications ranging from chemical synthesis to biomedical diagnostics.