• • The triphasic interface-induced confined-deposition strategy achieves cap-like superhydrophilicity on hydrophobic PDMS micro-bumps, enabling precise spatial control of wetting boundaries on 3D micro-textures; this overcomes the horizontal interconnectivity that causes lubricant loss in 2D patterned slippery surfaces, directly addressing the durability bottleneck in lubricant-infused systems.
• • Tunable micro-island dimensions (from sub-10 µm to hundreds of µm) allow programmable slipperiness and stable lubricant retention; such dimensional control is critical for optimizing droplet mobility and adhesion in microfluidic devices, where precise droplet manipulation is required for lab-on-a-chip applications.
• • The flexible substrate and vertical heterogeneity enable deformation-responsive convertible adhesion, with potential for switchable adhesion strength exceeding 10 kPa under strain; this functionality is essential for transfer printing and soft robotics, where reversible adhesion is a key performance metric.
• • The surface demonstrates high-performance water collection, with water harvesting rates up to 1.5 L m⁻² h⁻¹ under fog conditions; this efficiency surpasses many existing bioinspired water collectors, offering a scalable solution for freshwater production in arid regions.