Observation of the skin-depth effect on the Casimir force between metallic surfaces.
We have performed measurements of the Casimir force between a metallic plate and a transparent sphere coated with metallic films of different thicknesses. We have observed that, if the thickness of the coating is less than the skin-depth of the electromagnetic modes that mostly contribute to the interaction, the force is significantly smaller than that measured with a thick bulk-like film. Our results provide direct evidence of the skin-depth effect on the Casimir force between metallic surfaces.
Lisanti
Mariangela
M
Department of Physics, Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
Iannuzzi
Davide
D
Capasso
Federico
F