👉 The designed fluid, often referred to as a smart or adaptive fluid, is engineered to exhibit unique and tunable properties that can be adjusted in response to external stimuli such as temperature, pH, electric or magnetic fields, or light. This fluid typically consists of a base liquid combined with micro or nano-sized particles that can change their behavior when triggered by these stimuli. The particles may alter the fluid's viscosity, surface tension, or even its chemical composition, allowing the fluid to adapt its characteristics dynamically. This design makes it highly versatile for applications in soft robotics, adaptive coatings, drug delivery systems, and smart materials, where the ability to respond to environmental changes is crucial.