醇中玻璃-金宏观表面间的弱色散力
Weak dispersive forces between glass-gold macroscopic surfaces in alcohols
摘要：
在这项工作中，我们集中在金-酒精-玻璃系统中的范德华力和卡西米尔力的Lifshitz理论的实验验证。从这个理论弱色散力预测时，介电介质的介电性质变得可比的相互作用的表面之一。使用反胶体探针原子力显微镜分散力偶尔测量，并在控制条件下，通过添加盐筛选的静电双层力，如果存在。色散力被认为是有吸引力的，和一个数量级弱于在空气中。虽然这些系统的力的理论描述变得不那么精确，即使有充分的知识的介电性质，我们仍然发现我们的结果与Lifshitz理论在合理的协议。
英文摘要：
In this work we concentrate on an experimental validation of the Lifshitz theory for van der Waals and Casimir forces in gold-alcohol-glass systems. From this theory weak dispersive forces are predicted when the dielectric properties of the intervening medium become comparable to one of the interacting surfaces. Using inverse colloid probe atomic force microscopy dispersive forces were measured occasionally and under controlled conditions by addition of salt to screen the electrostatic double layer force if present. The dispersive force was found to be attractive, and an order of magnitude weaker than that in air. Although the theoretical description of the forces becomes less precise for these systems even with full knowledge of the dielectric properties, we find still our results in reasonable agreement with Lifshitz theory.
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