Disentangling the Effects of Shape and Dielectric Response in van der Waals Interactions between Anisotropic Bodies

详细信息    查看全文

• 作者：Jaime C. Hopkins ; Rudolf Podgornik ; Wai-Yim Ching ; Roger H. French ; V. Adrian Parsegian
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：August 20, 2015
• 年：2015
• 卷：119
• 期：33
• 页码：19083-19094
• 全文大小：582K
• ISSN：1932-7455

文摘

The free energies, forces, and torques for all separations and mutual orientations are formulated in the full Lifshitz continuum theory of van der Waals interactions. Angular dependence of interactions is characterized for three different interaction geometries of bodies with morphological and/or material anisotropy, interacting across an isotropic aqueous medium: two infinite half-spaces; two half-spaces of composite media comprising parallel cylinder arrays; and an isolated pair of long, thin cylinders. The contributions to van der Waals interaction energy due to shape anisotropy and material anisotropy are isolated in detailed calculations and examined. Surprisingly, the effect of shape on interactions in the retarded regime results in a torque between arrays of cylinders that is stronger than that between half-spaces.