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Paper   IPM / Physic / 15085
School of Physics
  Title:   Synchronized motion of noncontact rack-and-pinion devices subject to thermal noise
  Author(s): 
1.  M. Nasiri
2.  M.F. Miri
3.  R. Golestanian
  Status:   Published
  Journal: Appl.Phys.Lett
  Vol.:  100
  Year:  2012
  Pages:   114105
  Supported by:  IPM
  Abstract:
The lateral Casimir force is employed to propose a nanoscale mechanical device composed of one rack and N pinions. A coupling between the pinions via torsional springs is shown to coordinate their motion through a synchronization transition. The system can work against loads that are greater than the lateral Casimir force for each device. The existence of a stable synchronized state ensures that the system could operate in full coordination without the need of delicate fine tuning of all the characteristics such as the spring constants, the corrugation amplitudes, and the distances between the rack and the pinions.

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