Dielectric Optical Cloak

Understand

Invisibility or cloaking has captured human's imagination for many years.

• With the recent advancement of metamaterials, several theoretical proposals show cloaking of objects is possible, however, so far there is a lack of an experimental demonstration at optical frequencies.
• Here, we report the first experimental realization of a dielectric optical cloak.
• The cloak is designed using quasi-conformal mapping to conceal an object that is placed under a curved reflecting surface which imitates the reflection of a flat surface.