General Way To Compute the Intrinsic Contact Angle at Tubes

2018 ◽  
Vol 122 (51) ◽  
pp. 29210-29219 ◽  
Author(s):  
Chengjie Xiang ◽  
Lidong Sun
Keyword(s):  
Contact Angle ◽  
Intrinsic Contact Angle

Wetting Criteria of Intrinsic Contact Angle To Distinguish between Hydrophilic and Hydrophobic Micro-/Nanotextured Surfaces: Experimental and Theoretical Analysis with Synchrotron X-ray Imaging

Langmuir ◽  
2019 ◽  
Vol 35 (10) ◽  
pp. 3607-3614 ◽  
Author(s):  
Dong In Yu ◽  
Ho Jae Kwak ◽  
Chulmin Park ◽  
Chiwoong CHOI ◽  
Narayan Pandurang Sapkal ◽  
...  
Keyword(s):  
Contact Angle ◽  
Theoretical Analysis ◽  
X Ray ◽  
X Ray Imaging ◽  
Intrinsic Contact Angle

Effect of Materials’ Wettability on the Dynamic Behavior of Droplet Impact onto a Rough Solid Surface

2011 ◽  
Vol 320 ◽  
pp. 341-346
Author(s):  
Jing Cui ◽  
Yang Liu ◽  
Wei Zhong Li ◽  
Ning Zhang
Keyword(s):  
Contact Angle ◽  
Solid Surface ◽  
Liquid Droplet ◽  
Droplet Impact ◽  
Apparent Contact Angle ◽  
Bottom Surface ◽  
Roughness Elements ◽  
Hydrophilic Material ◽  
Boltzmann Method ◽  
Intrinsic Contact Angle

In this paper, the effect of material’s wettability on the droplet impact has been investigated by numerical apporach. The unsteady flow behaviors of liquid droplet impacting against the rough solid surface with different wettabilities have been simulated based on lattice Boltzmann method. The spreading and bounding characterisitcs of droplet have been discussed. For the hydrophilic material, the droplet will sink into the grooves among roughness bumps, and its apparent contact angle in steady stead will be smaller than its corresponding intrinsic contact angle; while for the hydrophilic material, droplet will flow into the grooves but suspend on the top of roughness elements without any contacting with the bottom surface, and the apparent contact angle is larger than its intrinsic contact angle.

Controlling states of water droplets on nanostructured surfaces by design

Nanoscale ◽  
2017 ◽  
Vol 9 (46) ◽  
pp. 18240-18245 ◽  
Author(s):  
Chongqin Zhu ◽  
Yurui Gao ◽  
Yingying Huang ◽  
Hui Li ◽  
Sheng Meng ◽  
...  
Keyword(s):  
Contact Angle ◽  
Water Droplets ◽  
Nanostructured Surfaces ◽  
Base Angle ◽  
Intrinsic Contact Angle

The transition between the Cassie and Wenzel states can be controlled via precisely designed trapezoidal nanostructures on the surface, for which the base angle of the trapezoids and the intrinsic contact angle of the surface are two possible adjustable parameters.

Intrinsic contact angle and contact interaction between liquid silver and solid graphite

2007 ◽  
Vol 13 (2) ◽  
pp. 83-86 ◽  
Author(s):  
Joonho Lee ◽  
Kazufumi Seo ◽  
Nobumitsu Hirai ◽  
Nobuyoki Takahira ◽  
Toshihiro Tanaka
Keyword(s):  
Contact Angle ◽  
Contact Interaction ◽  
Liquid Silver ◽  
Intrinsic Contact Angle

SUPERHYDROPHOBIC SURFACES FOR WATER-REPELLENT OR SELF-CLEANING BEHAVIOR: CHEMICAL EFFECT

2009 ◽  
Vol 16 (05) ◽  
pp. 645-652
Author(s):  
Y. P. ZHOU ◽  
Z. W. LIN ◽  
J. BROWN
Keyword(s):  
Contact Angle ◽  
Thermodynamic Analysis ◽  
Contact Angle Hysteresis ◽  
Superhydrophobic Surfaces ◽  
Chemical Effect ◽  
Water Repellent ◽  
Cleaning Behavior ◽  
Self Cleaning ◽  
Intrinsic Contact Angle

In this study, a thermodynamic analysis is conducted to investigate the chemical effect, in terms of intrinsic contact angle (CA), on the superhydrophobic behavior. It is theoretically revealed that the essential effect of intrinsic CA is to promote the composite transition. In particular, a large intrinsic CA more than 90° is necessary for such transition. Furthermore, for a pillar system with an intrinsic CA smaller than 90°, composite states are not impossible but is thermodynamically unstable. Once composite states are achieved, the advancing or maximum CA always approaches 180° whether an intrinsic CA is larger or smaller than 90°. In addition, the role of intrinsic CA in the water-repellent or self-cleaning behavior such as contact angle hysteresis (CAH) and equilibrium CA has been discussed in detail.

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