论文标题
水碳界面的经典量子摩擦
Classical quantum friction at water-carbon interfaces
论文作者
论文摘要
水碳界面处的摩擦仍然是一个主要难题，理论和模拟无法解释纳米级水流的实验趋势。最近的一个理论框架 - 量子摩擦（QF） - 提议通过考虑在水和石墨表面中介电波动之间的非绝热耦合来解决这些实验观察。在这里，使用能够对固体介电谱进行微调的经典模型，我们提供了模拟的证据，以普遍支持QF。特别是，随着固体介电频谱的特征开始与水的图书馆和debye模式重叠，我们发现与QF提出的摩擦相一致。在显微镜水平上，我们发现对摩擦的贡献在固体电荷密度的动力学上比水的动力学更为明显。我们的发现表明，QF的实验特征可能在固体的反应中更明显而不是液态水。
Friction at water-carbon interfaces remains a major puzzle with theories and simulations unable to explain experimental trends in nanoscale waterflow. A recent theoretical framework -- quantum friction (QF)-- proposes to resolve these experimental observations by considering nonadiabatic coupling between dielectric fluctuations in water and graphitic surfaces. Here, using a classical model that enables fine-tuning of the solid's dielectric spectrum, we provide evidence from simulations in general support of QF. In particular, as features in the solid's dielectric spectrum begin to overlap with water's librational and Debye modes, we find an increase in friction in line with that proposed by QF. At the microscopic level, we find that this contribution to friction manifests more distinctly in the dynamics of the solid's charge density than that of water. Our findings suggest that experimental signatures of QF may be more pronounced in the solid's response rather than liquid water's.
