title: Complementary media invisibility cloak that cloaks objects at a distance outside the cloaking shell.
abstract: Based on the concept of complementary media, we propose an invisibility cloak operating at a finite frequency that can cloak an object with a prespecified shape and size within a certain distance outside the shell. The cloak is comprised of a dielectric core and an "antiobject" embedded inside a negative index shell. The cloaked object is not blinded by the cloaking shell since it lies outside the cloak. Full-wave simulations in two dimensions have been performed to verify the cloaking effect.
authors.affiliation: Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Lai
authors.forename: Huanyang
authors.initials: H
authors.lastname: Chen
authors.forename: Zhao-Qing
authors.initials: ZQ
authors.lastname: Zhang
authors.forename: C T
authors.initials: CT
authors.lastname: Chan