@article{1001,
  author = {Alejandro Rodriguez and Alexander McCauley and David Woolf and Federico Capasso and J. Joannopoulos and Steven Johnson},
  title = {Non-touching nanoparticle diclusters bound by repulsive and attractive Casimir forces},
  abstract = {We present a scheme for obtaining stable Casimir suspension of dielectric nontouching objects immersed in a fluid, validated here in various geometries consisting of ethanol-separated dielectric spheres and semi-infinite slabs. Stability is induced by the dispersion properties of real dielectric (monolithic) materials. A consequence of this effect is the possibility of stable configurations (clusters) of compact objects, which we illustrate via a "molecular" two-sphere dicluster geometry consiting of two bound spheres levitated above a gold slab. Our calculations also reveal a strong interplay between material and geometric dispersion, and this is exemplified by the qualitatively different stability behavior observed in planar versus spherical geometries.},
  year = {2010},
  journal = {PRL},
  volume = {104},
  number = {16},
  pages = {160402},
  url = {http://prl.aps.org/abstract/PRL/v104/i16/e160402},
}