Potential and motion design of droplets in a wetting-programable nanoporous surface

In this study, we design a wetting-programable method to create surface channel for droplets. Superhydrophilic channels can be designed and erased reversibly by selectively masking the wetting prewetting process on superhydrophobic silicone surfaces with microgroove nanoporous structures fabricated using micromachining technique. We found that droplets in flow present complex behavior. The undergoes infiltration transitions from being becoming superhydrophilic surface. To understand dynamics of droplet exploration, measured spreading distance droplet’s leading edge spontaneous capillary (SCF). final length was also recorded. increasing volume enhances average SCF speed. Prewetting minimizes apparent contact angle pinning, promoting superhydrophilicity mobility. further enhance our control over liquid transport, incorporated vertical vibration as an active approach regulate programmed transport observed substantial extension edge. This attributed effective overcoming pinning phenomena caused application vibration. With above-mentioned methods, achieve guided motion multi-droplet sequence mixing shapes. Our results suggest how behavior multi-level structural are affected provides insight into mechanism porous superhydrophobic/superhydrophilic material.