Manipulation of Ferrofluid‐Wrapped Drops: Translation, Coalescence, and Release

Magnetic manipulation of droplets has emerged as a promising strategy to achieve several complex tasks ranging from targeted drug delivery and micro-robotics controlled chemical synthesis. Hence, proper control in creating magnetically responsive is indispensable for successful implementation. Here, an impact-based encapsulation technique employed create stable ferrofluid-wrapped single-liquid compound inside water bath. Thereafter, permanent magnet used manipulate the resulting encapsulated cargo demonstrate its feasibility various applications. The manipulations reported herein are underwater magnet-assisted drop translation coalescence droplets. release innermost droplet also experimentally demonstrated via magnetic actuation. Importantly, first time, ferrofluid containing water-soluble species pool demonstrated. non-contact presented this work promises significant implications actuation technologies.