论文标题
纳米级的类似电荷吸引力：地面相关性和破坏水
Like-charge attraction at the nanoscale: ground-state correlations and water destructuring
论文作者
论文摘要
离子相关性驱动的类似电荷吸引力挑战了我们在软质和硬物质中对静电的理解。对于两个带电的平面表面限制了柜台和水，我们证明即使在相对较低的相关强度下，相关的物理学也是地态的，却没有波动。基于此，我们得出了一个简单准确的相互作用压力，可以满足已知的确切要求，并且可以用作有效的潜力。我们测试了该方程式，以对隐式溶剂蒙特卡洛模拟以及对水泥和几种类型的粘土的显式溶剂模拟进行测试。我们认为，在纳米限制下破坏的水会大大减少介电筛选，增强离子相关性。因此，我们的介电性降低状态方程式解释了这些材料报告的异国情调的有吸引力的制度，即使没有多价柜台。
Like-charge attraction, driven by ionic correlations, challenges our understanding of electrostatics both in soft and hard matter. For two charged planar surfaces confining counterions and water, we prove that even at relatively low correlation strength, the relevant physics is the ground-state one, oblivious of fluctuations. Based on this, we derive a simple and accurate interaction pressure, that fulfills known exact requirements and can be used as an effective potential. We test this equation against implicit-solvent Monte Carlo simulations and against explicit-solvent simulations of cement and several types of clays. We argue that water destructuring under nanometric confinement drastically reduces dielectric screening, enhancing ionic correlations. Our equation of state at reduced permittivity therefore explains the exotic attractive regime reported for these materials, even in absence of multivalent counterions.
