The behaviour and health of lubricated systems in various natural and artificial settings are often characterized by their load bearing capacity. This capacity stemming from the lift force associated with confined fluid flow can be significantly altered due to surface compliance and electrokinetic effects. Here, we highlight the influence of finite size of the ionic species participating in electrokinetic transport with substrate compliance in determining the electromechanical characteristics of lubricated systems. With these new considerations, anomalous trends previously observed for the load bearing capacity corresponding to high values of zeta potential are corrected. Simultaneously, trends associated with the finite ionic size are also found to be reversed, but fall in line with the consistent theory. Importantly, despite an intricate interplay among the various influences – electrokinetic, hydrodynamic, geometric, and elastic – previously established trends due to geometric (non-parallel slider geometry) and elastic effects are found to persist. Specifically, in the presence of electrokinetic effects, an increase in the obliqueness of the slider geometry results in lower values of load bearing capacity while an increase in the stiffness leads to higher values. These results point to a certain robustness in the overall theory and it is hoped that they can contribute to better practical designs of slider bearings and an improved understanding of lubricated sliding surfaces in biological settings.

中文翻译：

---

离子种类的有限尺寸效应在电动势和表面柔韧性的综合影响下灵敏地决定了润滑系统的承载能力

润滑系统在各种自然和人工环境下的行为和健康状况通常以其承载能力为特征。由于表面柔顺性和电动效应，与受限流体流相关的起升力产生的这种能力会大大改变。在这里，我们强调了在确定润滑系统的机电特性时，参与电动迁移的离子物种的有限尺寸对基材的柔韧性的影响。有了这些新的考虑，就可以纠正以前观察到的与zeta电势高值相对应的承载能力的异常趋势。同时，与有限离子尺寸有关的趋势也被逆转，但与一致的理论相符。重要的，尽管各种影响因素（电动，流体动力，几何和弹性）之间有着复杂的相互作用，但是先前发现的由于几何（非平行滑块几何形状）和弹性效应而形成的趋势仍然存在。具体地，在存在电动效应的情况下，滑块几何形状的倾斜度的增加导致较低的承载能力值，而刚性的增加导致较高的值。这些结果表明整个理论具有一定的鲁棒性，并希望它们能够为滑块轴承的更好的实用设计和对生物环境中润滑的滑动表面的更好的理解做出贡献。弹性-先前建立的趋势（由于几何形状（非平行滑块几何形状）和弹性效应）持续存在。具体地，在存在电动效应的情况下，滑块几何形状的倾斜度的增加导致较低的承载能力值，而刚性的增加导致较高的值。这些结果表明整个理论具有一定的鲁棒性，并希望它们能够为滑块轴承的更好的实用设计和对生物环境中润滑的滑动表面的更好的理解做出贡献。弹性-先前建立的趋势（由于几何形状（非平行滑块几何形状）和弹性效应）持续存在。具体地，在存在电动效应的情况下，滑块几何形状的倾斜度的增加导致较低的承载能力值，而刚性的增加导致较高的值。这些结果表明整个理论具有一定的鲁棒性，并希望它们能够为滑块轴承的更好的实用设计和对生物环境中润滑的滑动表面的更好的理解做出贡献。