How to repel hot water from a superhydrophobic surface?

2014 ◽  
Vol 2 (27) ◽  
pp. 10639-10646 ◽  
Author(s):  
Zhe-Jun Yu ◽  
Jieyi Yang ◽  
Fang Wan ◽  
Quan Ge ◽  
Long-Lai Yang ◽  
...  
Keyword(s):  
Water Droplet ◽  
Superhydrophobic Surface ◽  
Hot Water ◽  
Superhydrophobic Surfaces ◽  
Surface Temperatures

We demonstrated the superhydrophobicity of five superhydrophobic surfaces by manipulating water droplet and surface temperatures.

Repelling hot water from superhydrophobic surfaces based on carbon nanotubes

2015 ◽  
Vol 3 (33) ◽  
pp. 16953-16960 ◽  
Author(s):  
Fang Wan ◽  
De-Quan Yang ◽  
Edward Sacher
Keyword(s):  
Carbon Nanotubes ◽  
Contact Angle ◽  
Water Droplet ◽  
Room Temperature ◽  
Hot Water ◽  
Superhydrophobic Surfaces ◽  
Water Contact ◽  
Static Water Contact Angle ◽  
Slide Angle ◽  
Static Water

Superhydrophobic (SH) surfaces generally refer to those having a static water contact angle larger than 150° and a slide angle less than 10°, when both the surface and the water droplet are at room temperature.

Dynamic Impact Behavior of Water Droplet on a Superhydrophobic Surface in the Presence of Stagnation Flow

2012 ◽  
Vol 232 ◽  
pp. 267-272 ◽  
Author(s):  
Morteza Mohammadi ◽  
Sara Moghtadernejad ◽  
Percival J. Graham ◽  
Ali Dolatabadi
Keyword(s):  
Water Droplet ◽  
Weber Number ◽  
Contact Time ◽  
Superhydrophobic Surface ◽  
Superhydrophobic Surfaces ◽  
Impact Behavior ◽  
Stagnation Flow ◽  
Dynamic Impact ◽  
Air Flow Velocity ◽  
Impact Experiments

The following study investigates splashing of impinging water droplets on superhydrophobic surfaces with and without the presence of a stagnation flow. Droplets were accelerated by either gravity or gravity and co-flow. By changing the height and the air flow velocity different combinations of stagnation flow and droplet velocity were created. The spreading diameter, spreading velocity and contact time were studied for different air and droplet speeds. It was clearly observed that for a fixed impact velocity (i.e. constant Weber number), the presence of the stagnation flow promotes splashing and formation of satellite droplets. Consequently, for the co-flow droplet impact experiments, the mass of the recoiled droplet is significantly smaller than that of the impinging droplet in still air.

Fabrication of Superhydrophobic Surface by Modulating Morphology of the Organogel

Soft Matter ◽  
2021 ◽  
Author(s):  
Jianchen Zhu ◽  
Tian ren Zhang ◽  
Yajie Liu ◽  
Daoyi Lu ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Superhydrophobic Surface ◽  
Superhydrophobic Surfaces ◽  
Low Molecular Weight

A kind of low-molecular weight organic gelator (LMOG) bearing hydrazine linkage and end-capped by alkoxy-substituted phenyl, namely 1, 4-bis[(3, 4-bisoctyloxyphenyl)hydrozide]phenylene (BPH-8), was used to facilely fabricate superhydrophobic surfaces by drop-casting...

Stretchable dual cross-linked silicon elastomer with superhydrophobic surface and fast triple self-healing ability at room temperature

Soft Matter ◽  
2021 ◽  
Author(s):  
Yuxing Shan ◽  
shuai liang ◽  
Xiangkai Mao ◽  
Jie Lu ◽  
Lili Liu ◽  
...  
Keyword(s):  
Superhydrophobic Surface ◽  
Room Temperature ◽  
Superhydrophobic Surfaces ◽  
Self Healing ◽  
Wearable Electronics ◽  
Actual Application ◽  
Potential Applications

Abstract. Stretchable elastomers with superhydrophobic surfaces have potential applications in wearable electronics. However, various types of damage inevitably occur on these elastomers in actual application, resulting in deterioration of the...

scholarly journals One-step fabrication of soft calcium superhydrophobic surfaces by a simple electrodeposition process

RSC Advances ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 297-308
Author(s):  
Zhi Chen ◽  
Yongbo Hu ◽  
Xu He ◽  
Yihao Xu ◽  
Xuesong Liu ◽  
...  
Keyword(s):  
Formation Process ◽  
Superhydrophobic Surface ◽  
Surface Preparation ◽  
Superhydrophobic Surfaces ◽  
Water Droplets ◽  
Step Method ◽  
Electrodeposition Process ◽  
Pressing Force ◽  
One Step

We investigated a one-step method for calcium superhydrophobic surface preparation and researched the formation process of loose, flower-like microstructures. Also, we found that the pressing force strongly impacts the dynamics of water droplets.

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