Bioinspired Anti‐Plateau–Rayleigh‐Instability on Dual Parallel Fibers

• DOI: 10.1002/adma.202003453
• Publication Date: 2020-10-05T07:33:44Z
• Authors: Pengwei Wang; Jiajia Zhou; Bojie Xu; Cong Lu; Qing'an Meng; Huan Liu
• Keywords: Rayleigh–Taylor instability

Abstract The Plateau–Rayleigh instability (PRI) is a well‐known phenomenon where liquid column always breaks up into droplets to achieve the minimization of surface energy. It normally leads non‐uniformity film, which, however, unfavorable for fluid coating process. So far, strategies overcome this rely on either surfactants, UV/high‐temp curing treatments, or specific chemical reactions, which suffer from both limited composition and complicated experimental conditions. Natural mulberry silk, typical composite fiber, produced by silkworms through similar fluidic process, but exhibits remarkably uniform smooth surface. Drawing inspiration, it revealed that unique dual parallel fibers are capable overcoming PRI during Such anti‐PRI ability attributable changes in Laplace pressure difference caused alternative asymmetry as has been demonstrated force analysis irregular film theoretical simulation according stability strategy applicable preparing various functional coatings fibers, offers new perspectives microfluidic technologies.