|Title||Casimir-Polder force between anisotropic nanoparticles and gently curved surfaces|
|Publication Type||Journal Article|
|Year of Publication||2015|
|Authors||Bimonte G, Emig T, Kardar M|
|Journal||Physical Review D|
The Casimir--Polder interaction between an anisotropic particle and a surface is orientation dependent. We study novel orientational effects that arise due to curvature of the surface for distances much smaller than the radii of curvature by employing a derivative expansion. For nanoparticles we derive a general short distance expansion of the interaction potential in terms of their dipolar polarizabilities. Explicit results are presented for nano-spheroids made of SiO2 and gold, both at zero and at finite temperatures. The preferred orientation of the particle is strongly dependent on curvature, temperature, as well as material properties.
|Short Title||Phys. Rev. D|