title: First experimental demonstration of an isotropic electromagnetic cloak with strict conformal mapping.
abstract: In the past years quasi-conformal mapping has been generally used to design broadband electromagnetic cloaks. However, this technique has some inherit practical limitations such as the lateral beam shift, rendering the device visible or difficult to hide a large object. In this work we circumvent these issues by using strict conformal mapping to build the first isotropic cloak. Microwave near-field measurement shows that our device (with dielectric constant larger than unity everywhere) has a very good cloaking performance and a broad frequency response. The present dielectric approach could be technically extended to the fabrication of other conformal devices at higher frequencies.
authors.affiliation: Centre for Optical and Electromagnetic Research, State Key Lab of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310058, China.
authors.forename: Yungui
authors.initials: Y
authors.lastname: Ma
authors.forename: Yichao
authors.initials: Y
authors.lastname: Liu
authors.forename: Lu
authors.initials: L
authors.lastname: Lan
authors.forename: Tiantian
authors.initials: T
authors.lastname: Wu
authors.forename: Wei
authors.initials: W
authors.lastname: Jiang
authors.forename: C K
authors.initials: CK
authors.lastname: Ong
authors.forename: Sailing
authors.initials: S
authors.lastname: He