论文标题
水滴在非溶质性SI纳米弹片上弹跳
Water Droplet Bouncing on a non-Superhydrophobic Si Nanosprings
论文作者
论文摘要
自我清洁的表面通常利用排斥水的超疏水涂层。在这里，我们报告了疏水性Si纳米弹簧表面，可通过排斥水滴有效地抑制润湿。我们研究了通过扫视角度沉积捏造的Si纳米弹簧阵列的动态响应。垂直站立的纳米弹簧阵列约为250 nm，相距60 nm，这使得液滴在接触后几毫秒内反弹。令人惊讶的是，纳米结构的形态会影响影响动态。还发现SI纳米弹簧的反弹时间和恢复系数高于垂直SI柱。已经提出，Si Nanosprings的恢复力可能是水滴反弹的原因，可以通过将液滴/纳米弹性表面视为耦合的弹簧系统来解释。这些纳米弹簧表面可能会在自我清洁的窗户，液体式外部，太阳能电池的玻璃面板和防染色剂中找到应用。
Self-cleaning surfaces often make use of superhydrophobic coatings that repel water. Here, we report a hydrophobic Si nanospring surface, that effectively suppresses wetting by repelling water droplets. We investigated the dynamic response of Si nanospring arrays fabricated by glancing angle deposition. The vertical standing nanospring arrays were approximately 250 nm tall and 60 nm apart, which allowed the droplets to rebound within a few milliseconds after contact. Amazingly, the morphology of the nanostructures influences the impact dynamics. The rebound time and coefficient of restitution were also found to be higher for Si nanosprings than vertical SI columns. It has been proposed that the restoring force of the Si nanosprings may be responsible for the water droplet rebound and can be explained by considering the droplet/nanospring surface as a coupled spring system. These nanospring surfaces may find applications in self-cleaning windows, liquid-repellent exteriors, glass panels of solar cells, and antifouling agents for roof tiling.
