👉 The sandwich fluid is a type of colloidal suspension composed of two immiscible liquids, typically oil and water, stabilized by an amphiphilic polymer or surfactant. This unique structure allows the fluid to exhibit properties of both liquids, such as low viscosity and high surface tension, making it highly effective for various applications including drug delivery, oil recovery, and microfluidics. The sandwich fluid can be engineered to have specific properties by adjusting the type and concentration of the stabilizing agents, enabling precise control over its behavior in different environments.
