Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 20, Issue 24, Pages 16493-16500Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cp01766b
Keywords
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Funding
- National Natural Science Foundation of China [51671114]
- Special Funding in the Project of the Taishan Scholar Construction Engineering
- National Key Research Program of China [2016YFB0300501]
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Surfaces designed so that liquid metals do not stick to them but instead rebound as soon as possible have received considerable attention due to their significant importance in many practical technologies. We herein design a ridge structure that can induce the drop to rapidly rebound through the combination effect of centre-drawing recoil and the resulting faster retraction velocity. The suitable sharp-angle of the ridge for minimizing the contact time is determined as 20-301. Further analysis reveals that multi-ridge structure or two-ridge structure with gaps can reduce more contact time. We also highlight the role the impact velocity played in minimizing the contact time, which has been a neglected parameter previously. Our studies would open up a new way to reduce the contact time and control the bouncing dynamics of metal drops, which provides guidance for some potential applications, such as preventing splashing molten drops from depositing on clean surface.
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