  The levitation of nanoparticles is essential in various branches of research.
Casimir forces are natural candidates to tackle it but the lack of broadband
metamaterials precluded repulsive forces in vacuum. We show sub-micron
nanoparticle levitation in vacuum only based on the design of a broadband
metamaterial perfect magnetic conductor surface, where the force is mostly
given by the (quantum) zero-point contribution. In the harmonic regime of the
center of mass dynamics, the characteristic frequency depends linearly on
Planck's constant $\hbar$ while independent of the nanoparticle's volume.
