10.1021/acs.langmuir.9b03153.s004
Huaping Wu
Huaping
Wu
Kunpeng Jiang
Kunpeng
Jiang
Zhenxiong Xu
Zhenxiong
Xu
Sihang Yu
Sihang
Yu
Xiang Peng
Xiang
Peng
Zheng Zhang
Zheng
Zhang
Hao Bai
Hao
Bai
Aiping Liu
Aiping
Liu
Guozhong Chai
Guozhong
Chai
Theoretical
and Experimental Studies on the Controllable
Pancake Bouncing Behavior of Droplets
American Chemical Society
2019
Controllable Pancake Bouncing Behavior
surface microstructure size
contact time
superhydrophobic surface
droplet
2019-12-16 12:40:58
Media
https://acs.figshare.com/articles/media/Theoretical_and_Experimental_Studies_on_the_Controllable_Pancake_Bouncing_Behavior_of_Droplets/11370954
A droplet that impacts on a superhydrophobic surface
will undergo
a process of unfolding, contracting, and finally rebounding from the
surface. With regards to the pancake bouncing behavior of a droplet,
since the retraction process of the droplet is omitted, the contact
time is greatly shortened compared to the normal type of bouncing.
However, the quantitative prediction to the range of droplet pancake
bouncing and the adjustment of pancake bouncing state have yet to
be probed into. In this paper, we reported the controllable pancake
bouncing of droplets by adjusting the size of the superhydrophobic
surface with microstructures. In addition, we also discovered a dimensional
effect with regards to pancake bouncing, namely, the pancake bouncing
would be more likely to happen on the surfaces with large post spacing
for the droplet with the larger radius. The contact time could be
reduced to 2 ms by adjusting the size of the microstructures and the
radius of the droplets. Based on the relationship between the droplet
bouncing state and the surface microstructure size, we are able to
propose reasonable dimensions for the surfaces in order to control
pancake bouncing.