Speakers

​​​​​​​​Inspired by the fingerprint detection technique using superglue fuming, we present a novel interfacial-fuming-induced surface instability process to fabricate tunable wrinkled patterns on polymer substrates. By introducing high-electronegativity functional groups onto the substrate, vapor-phase monomers such as ethyl cyanoacrylate undergo localized polymerization, forming a stiff capping layer of poly(ethyl cyanoacrylate). The interfacial polymerization simultaneously induces covalent bonding with the substrate, leading to volumetric shrinkage and the buildup of compressive stress, which drives the formation of stable surface wrinkles. Key process parameters—including substrate modulus, prestrain, fume flow rate, and temperature—were systematically investigated to tune the resulting wrinkle morphology. This technique operates under ambient conditions and is compatible with complex geometries, requiring neither vacuum environments nor precise process controls. As a proof of concept, the wrinkled films were applied to LED surfaces to reduce glare by scattering incident light. The resulting microstructured surfaces demonstrated excellent anti-glare performance, highlighting the practical potential of this method in optical engineering. This work introduces a scalable, template-free approach for creating functional micro-patterns, with potential applications in microfluidics, optical surfaces, soft adhesion, and beyond.​​