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Lateral Casimir Force on a Rotating Particle near a Planar Surface
Alejandro Manjavacas1, Francisco J Rodríguez-Fortuño2, F Javier García de Abajo3,4
1Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131, USA.
Physical Review Letters
|April 15, 2017
Summary
A novel lateral Casimir force arises from rotating particles near surfaces. This force, driven by symmetry breaking, can be controlled to manipulate nanoscale objects.
Area of Science:
- Physics
- Nanotechnology
- Quantum Electrodynamics
Background:
- The Casimir effect describes forces between uncharged conductive objects due to quantum vacuum fluctuations.
- Lateral Casimir forces are typically associated with corrugated surfaces.
Purpose of the Study:
- To investigate the lateral Casimir force on a rotating particle near a planar surface.
- To explore the origin and characteristics of this force, distinct from forces on corrugated surfaces.
Main Methods:
- Utilizing the framework of fluctuational electrodynamics.
- Deriving analytical expressions for the lateral Casimir force.
- Analyzing the force's dependence on system properties.
Main Results:
- A lateral Casimir force exists for a rotating particle near a planar surface, even without surface corrugations.
- The force originates from symmetry breaking due to particle rotation and dipole fluctuations.
- The force direction is controllable by adjusting the particle-surface distance.
Conclusions:
- Discovered a new mechanism for lateral Casimir forces driven by particle rotation.
- Demonstrated that this force can be manipulated for nanoscale object control.