  Invisibility cloak is drawing much attention due to its special camouflage
when exposed to physical field varing from wave (electromagnetic field,
acoustic field, elastic wave, etc.) to scalar field (thermal field, static
magnetic field, dc electric field and mass diffusion). Here, an electrostatic
field invisibility cloak has been theoretically investigated, and
experimentally demonstrated for the first time to perfectly hide a certain
region from sight without disturbing the external electrostatic field. The
desired cloaking effect has been achieved via both scattering cancelling
technology and transformation optics (TO).This present work will pave a novel
way for manipulating of electrostatic field where would enable a wide range of
potential applications and sustainable products made available.
