@article{1041,
  author = {Alejandro Rodriguez and Jeremy Munday and Diego Dalvit and Federico Capasso and J. Joannopoulos and Steven Johnson},
  title = {Stable suspension and dispersion-induced transitions from repulsive Casimir forces between fluid-separated cylinders},
  abstract = {Using exact numerical methods for finite-size nonplanar objects, we demonstrate a stable mechanical suspension of a Silica cylinder within a metallic cylinder separated by Ethanol, via a repulsive Casimir force between the Silica and the metal. We investigate cylinders with both circular and square cross sections, and show that the latter exhibit a stable orientation as well as a stable position, via a method to compute Casimir torques for finite objects. Furthermore, the stable orientation of the square cylinder is shown to undergo an unusual 45 degree transition as a function of the separation length-scale, which is explained as a consequence of material dispersion.},
  year = {2008},
  journal = {PRL},
  volume = {101},
  number = {19},
  pages = {190404},
  url = {http://link.aps.org/abstract/PRL/v101/e190404},
}