Nepenthes‐Inspired Squeal Noise Reducing Elastomer with Stabilized Friction‐Induced Self‐Excited Vibration

作者：Bowen Zhang, Kang Yang, Xinping Yu, Jiayan Zhang, Zhichao Dong, Ruochen Fang, Lei Jiang · 发表于：Advanced Functional Materials · 年份：2025 · DOI：10.1002/adfm.202422552 · 被引用次数：9 · 研究领域：Adhesion, Friction, and Surface Interactions、Vibration Control and Rheological Fluids、Advanced Materials and Mechanics

Abstract The squealing noise generated by vehicle wipers has increasingly become a primary factor affecting driving safety and comfort. However, adjusting structure and wettability in wet environments to solve the friction‐induced squeal noise of wiper blades remains a challenge. Here, inspired by the effective liquid retention and stable interface formation achieved through surface microstructural grooves in Nepenthes, a superhydrophilic elastomer material with a groove array is prepared. This material effectively retains liquid and establishes a stable, slippery surface. It reduces self‐excited vibrations caused by friction, resulting in a decrease in squeal noise from 80 to 45 decibels(dB). This research not only presents a series of low‐noise elastomers, but also provides a new design strategy to reduce friction‐noise in fields such as engines, wiper blades, and oil‐lubricated bearings.