疏水性

（重定向自疏水

超疏水性

理论

1805年，托马斯·杨通过分析作用在由气体环绕的固体表面的液滴的力而确定了接触角θ。[3]

${\displaystyle \gamma _{SG}\ =\gamma _{SL}+\gamma _{LG}\cos {\theta }}$

${\displaystyle \gamma _{SG}\ }$ = 固体和气体之间的表面张力
${\displaystyle \gamma _{SL}\ }$ = 固体和液体之间的表面张力
${\displaystyle \gamma _{LG}\ }$ = 液体和气体之间的表面张力

θ可以用接触角测量计来测量。

Wenzel确定了当液体直接接触微结构化的表面时，θ角会转变为${\displaystyle \theta _{W}*}$

${\displaystyle \cos {\theta }_{W}*=r\cos {\theta }}$

Cassie和Baxter发现如果液体悬浮在微结构表面，θ角将会变为${\displaystyle \theta _{CB}*}$

${\displaystyle \cos {\theta }_{CB}*}$ = φ(cos θ + 1) – 1

cos θ < (φ-1)/(r - φ)

參考

1. ^ （英文）Aryeh Ben-Na'im Hydrophobic Interaction Plenum Press, New York (ISBN 978-0-306-40222-7)
2. ^ （英文）Goss, K. U. and R. P. Schwarzenbach (2003): "Rules of Thumb for Assessing Equilibrium Partitioning of Organic Compounds: Successes and Pitfalls." JOURNAL OF CHEMICAL EDUCATION 80(4): 450-455. Link to abstract
3. ^ （英文）Young, T. An Essay on the Cohesion of Fluids. Phil. Trans. R. Soc. Lond. 1805, 95: 65–87. doi:10.1098/rstl.1805.0005.
4. ^ （英文）Wenzel, RN. Resistance of Solid Surfaces to Wetting by Water. Ind. Eng. Chem. 1936, 28: 988–994.
5. ^ （英文）de Gennes, Pierre-Gilles. Capillarity and Wetting Phenomena. 2004.
6. ^ （英文）Cassie, ABD. Wettability of Porous Surfaces. Trans. Faraday Soc. 1944, 40: 546–551.
7. ^ （英文）Quere, D. Non-sticking Drops. Reports on Progress in Physics. 2005, 68: 2495–2532.
8. ^ （英文）Extrand, C. Criteria for Ultralyophobic Surfaces. Langmuir. 2004, 20: 5013–5018.
9. ^ （英文）Johnson, RE. Contact Angle Hysteresis. J. Phys. Chem. 1964, 68: 1744–1750.