Robust superamphiphobic coatings in confined and chemically inert tubular geometries enabled by a dynamic circulation coating strategy

thiol-ene click chemistry, forming a hierarchical micro-/nanostructure with ultralow surface energy. The resulting coatings exhibit exceptional superamphiphobicity, an outstanding static/dynamic pressure resistance of up to 2.0 MPa, and excellent chemical/mechanical durability. This work overcomes the critical barrier of applying high-performance superamphiphobic coatings to confined geometries, paving the way for their use in microfluidics, medical devices, industrial tubing,