Brenner S L, Parsegian V A
Biophys J. 1974 Apr;14(4):327-34. doi: 10.1016/S0006-3495(74)85919-9.
The screened Coulomb interaction between polyelectrolyte cylinders immersed in an ionic bath is examined. The electrostatic force and torque acting between a pair of unlike rods is formulated for all separations in which the electrostatic potential on some dividing surface between rods can be written as a linear superposition of isolated cylinder potentials. (The surface potential on the rods themselves may be much higher than that permitted by a superposition approximation.) The mutual energy in the case of skewed rods is found to be exponential in separation and proportional to 1/sin theta where theta is the twist angle of one rod relative to the other. Rods with similar charge repel each other with a torque acting to make the rods perpendicular while rods of opposite charge attract with the parallel arrangement preferred.
研究了浸没在离子浴中的聚电解质圆柱体之间的屏蔽库仑相互作用。对于一对不同的棒之间的所有间距，推导了静电力和扭矩，其中棒之间某个分界面上的静电势可写为孤立圆柱体势的线性叠加。（棒自身的表面电势可能远高于叠加近似所允许的值。）发现倾斜棒情况下的互能在间距上呈指数关系，且与1/sinθ成正比，其中θ是一根棒相对于另一根棒的扭转角。电荷相同的棒相互排斥，存在一个使棒垂直的扭矩，而电荷相反的棒相互吸引，倾向于平行排列。
