Physics – Optics
Scientific paper
2011-01-21
Applied Physics Letters Vol. 98, 194105 (2011)
Physics
Optics
Scientific paper
10.1063/1.3589119
We propose an optomechanical structure consisting of a photonic-crystal (holey) membrane suspended above a layered silicon-on-insulator substrate in which resonant bonding/antibonding optical forces created by externally incident light from above enable all-optical control and actuation of stiction effects induced by the Casimir force. In this way, one can control how the Casimir force is expressed in the mechanical dynamics of the membrane, not by changing the Casimir force directly but by optically modifying the geometry and counteracting the mechanical spring constant to bring the system in or out of regimes where Casimir physics dominate. The same optical response (reflection spectrum) of the membrane to the incident light can be exploited to accurately measure the effects of the Casimir force on the equilibrium separation of the membrane.
Capasso Federico
Hui Pui-Chuen
Iwase Eiji
Johnson Steven G.
Loncar Marko
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