We present a theoretical calculation of the changes in the Hamaker constant due to the anomalous reduction of the static dielectric function of water. Under confinement, the dielectric function of water decreases from a bulk value of 80 down to 2. If the confining walls are made of a dielectric material, the Hamaker constant reduces by almost 90%. However, if the confinement is realized with metallic plates, there is little change in the Hamaker constant. Additionally, we show that confinement can be used to decreases the Debye screening length without changing the salt concentration. This in turn is used to change the Hamaker constant in the presence of electrolytes.

中文翻译：

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约束下水的介电功能异常及其在范德华相互作用中的作用

由于水的静态介电函数反常减少，我们对Hamaker常数的变化进行了理论计算。在限制条件下，水的介电功能将从80的总体值下降到2。如果限制壁由介电材​​料制成，则Hamaker常数将降低近90％。但是，如果用金属板实现限制，则Hamaker常数几乎不变。此外，我们证明了可以在不改变盐浓度的情况下使用限制措施来减少德拜筛查的时间。反过来，这用于在存在电解质的情况下改变Hamaker常数。