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Van der Waals Interactions of Moving Particles with Surfaces of Cylindrical Geometry
Universe ( IF 2.5 ) Pub Date : 2021-04-19 , DOI: 10.3390/universe7040106
George V. Dedkov

General nonrelativistic theory has been developed and the expressions obtained for the tangential (dissipative) and radial (conservative) image forces and van der Waals forces (vdW) acting on charged and neutral particles when they move parallel to the axis of a cylinder with circular cross-section, or in the space between coaxial cylinders. Numerical calculations of vdW forces have been performed for metal (Au) and dielectric (Si) materials of cylinders (filaments) and Cs atoms at velocities ~107ms. A remarkable result is that in the case of metal cylinders (atomic filaments and chains) the dynamic vdW potential can be repulsive for certain values of the velocity–distance parameter and the characteristic atomic frequency. In the case of a Si material, the dynamic vdW potential increases relative to the static one (by modulus) when the velocity–distance parameter Vω0/R changes from zero to ~1.3 and then tends to zero.

中文翻译:

运动粒子与圆柱几何表面的范德华相互作用

已经发展了一般的非相对论,并获得了当带电粒子和中性粒子平行于带有圆形十字的圆柱轴运动时,作用在带电粒子和中性粒子上的切向(耗散)和径向(保守)像力以及范德华力(vdW)的表达式。截面,或在同轴圆柱体之间的空间中。对圆柱体(细丝)和Cs原子的金属(Au)和介电材料(Si)的Cd原子在约107ms的速度下进行了vdW力的数值计算。一个显着的结果是,在金属圆柱体(原子丝和链)的情况下,动态vdW势能对速度-距离参数和特征原子频率的某些值产生排斥作用。如果是硅材料, V ω0 / ř从零到1.3〜更改,然后趋向于零。
更新日期:2021-04-19
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