A Magnetic Driven Paper Microfluidic Soft Robot for Collection of Plasma from Whole Blood Sample

Soft robots, due to their greater flexibility, deformability, and adaptability compared to traditional rigid robots, have found applications in various fields such as flexible wearable devices, drug delivery, biosensing, and cargo handling. In order to make soft robots accessible to more people worldwide, we develop a low-cost magnetic driven soft robotic system using inexpensive paper and magnetic polymers, combined with 3D printing, for the quantitative collection of plasma from whole blood. Using this magnetic driven soft robotic system, we are able to achieve quantitative plasma collection within 90 seconds, requiring only $20.0 \mu ~\mathrm{L}$ whole blood sample, which can be effortlessly collected from a fingertip. Our research demonstrates the significant potential of magnetic driven soft robots for point-of-care testing (POCT) applications in resourcelimited regions.