The Repulsive Casimir Force with Metallic Ellipsoid Structure

Figure 6

The Casimir force in plate-ellipsoid-plate configuration: (a) the material is gold. The black line shows that fixing the ellipsoid and the top plate at  μm, the force becomes repulsive with the increase of . But the blue line indicates that as  μm, the force is attractive. The red line and green line suggest that the force is almost attractive; (b) the material is perfect metal, and as  μm the force is attractive; (c) shows the two different materials at two different points where the repulsive force becomes attractive; (d) as we fixed the ellipsoid and varied and simultaneously, the Casimir force fluctuated between attraction and repulsion.

(a)

(b)

(c)

(d)