Electromagnetic wave interactions with a metamaterial cloak

• Main Authors: Chen, Hongsheng, Wu, Bae-Ian, Zhang, Baile, Kong, Jin Au
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2012
• Subjects: DRNTU::Science::Mathematics
• Online Access: https://hdl.handle.net/10356/79995; http://hdl.handle.net/10220/8752
• Institution: Nanyang Technological University

We establish analytically the interactions of electromagnetic wave with a general class of spherical cloaks based on a full wave Mie scattering model. We show that for an ideal cloak the total scattering cross section is absolutely zero, but for a cloak with a specific type of loss, only the backscattering is exactly zero, which indicates the cloak can still be rendered invisible with a monostatic (transmitter and receiver in the same location) detection. Furthermore, we show that for a cloak with imperfect parameters the bistatic (transmitter and receiver in different locations) scattering performance is more sensitive to ηt=√μt/ϵt than nt=√μtϵt.