Slippery damper of an overlay for arresting and manipulating droplets on nonwetting surfaces.
Slippery damper of an overlay for arresting and manipulating droplets on nonwetting surfaces.
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DOI：
10.1038/s41467-021-23511-3
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发表时间：
2021-05-26
影响因子：
16.6
通讯作者：
Wang L
中科院分区：
文献类型：
--
作者：
Han X;Li W;Zhao H;Li J;Tang X;Wang L
在不同的过程中，如施肥、杀虫剂和冷却，液体的输送受到接收表面的超驱避性的影响，包括超水/全憎和过热类型，这是嵌入的气穴或蒸汽垫促进液滴反弹作为浮动质量弹簧系统的结果。通过简单地在撞击液滴上覆盖少量润滑剂（小于液滴体积的0.1 %），它们的界面特性就会被改变，从而使阻尼辊支撑附着在质量弹簧系统上。覆盖层通过粘滞耗散来减缓离开的液滴，从而抑制面外反弹，并通过自润滑来维持液滴的面内流动性，这是喷雾冷却中液体脱落和印刷中液滴重新定位等场景的优先状态。我们的方法的足迹可以做到最小，避免表面污染和中毒。我们的方法能够对影响不同类型非润湿表面的液滴进行多功能和动态控制。在许多实际应用中，控制液滴在超级驱避表面上的沉积是一项具有挑战性的任务。Han等人的研究表明，一层相当薄的高粘性液体的封装膜可以微调液滴的冲击，从而抑制反弹和飞溅。
In diverse processes, such as fertilization, insecticides, and cooling, liquid delivery is compromised by the super-repellency of receiving surfaces, including super-hydro-/omni-phobic and superheated types, a consequence of intercalated air pockets or vapor cushions that promote droplet rebounds as floating mass-spring systems. By simply overlaying impacting droplets with a tiny amount of lubricant (less than 0.1 vol% of the droplet), their interfacial properties are modified in such a way that damper-roller support is attached to the mass-spring system. The overlayers suppress the out-of-plane rebounds by slowing the departing droplets through viscous dissipation and sustain the droplets’ in-plane mobility through self-lubrication, a preferential state for scenarios such as shedding of liquid in spray cooling and repositioning of droplets in printing. The footprint of our method can be made to be minimal, circumventing surface contamination and toxification. Our method enables multifunctional and dynamic control of droplets that impact different types of nonwetting surfaces. Controlled deposition of droplets on super-repellent surfaces is a challenging task in many practical applications. Han et al. show that already a rather thin encapsulating film of a highly viscous liquid can fine tune droplet impact as to suppress both rebound and splash.
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DOI：
10.1016/0017-9310(66)90112-8
发表时间：
1966-01-01
影响因子：
5.2
作者：
GOTTFRIED, BS;LEE, CJ;BELL, KJ
通讯作者：
BELL, KJ
影响因子：
16.6
作者：
Gauthier A;Symon S;Clanet C;Quéré D
通讯作者：
Quéré D
影响因子：
19.6
作者：
Daniel, Dan;Timonen, Jaakko V. I.;Aizenberg, Joanna
通讯作者：
Aizenberg, Joanna
影响因子：
16.6
作者：
Galliker, P.;Schneider, J.;Poulikakos, D.
通讯作者：
Poulikakos, D.
影响因子：
64.8
作者：
Bergeron, V;Bonn, D;Vovelle, L
通讯作者：
Vovelle, L