Physics – Quantum Physics
Scientific paper
2012-01-11
Physics
Quantum Physics
3.5 pages, 3 figures
Scientific paper
We consider the interaction between a ZnO nanorod and a SiO2 nanorod in bromobenzene. Using optical data for the interacting objects and ambient we calculate the force - from short-range attractive van der Waals force to intermediate range repulsive Casimir-Lifshitz force to long range entropically driven attraction. The nonretarded van der Waals interaction is attractive at all separations. We demonstrate a retardation driven repulsion at intermediate separations. At short separations (in the nonretarded limit) and at large separations (in the classical limit) the interaction is attractive. These effects can be understood from an analysis of multiple crossings of the dielectric functions of the three media as functions of imaginary frequencies.
Baldissera Gustavo
Boström Mathias
Ninham Barry W.
Persson Clas
Sernelius Bo E.
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