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Updated: Jun 21, 2026

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
Published on: September 25, 2020
Electromagnetic interaction of arbitrary radial-dependent anisotropic spheres and improved invisibility for
Cheng-Wei Qiu1, Andrey Novitsky, Hua Ma
1Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. cwq@mit.edu
Abstract:
An analytical method of electromagnetic wave interactions with a general radially anisotropic cloak is established. It is able to deal with arbitrary parameters [ epsilon r (r) , mu r (r) , epsilon t (r) , and mu t (r) ] of a radially anisotropic inhomogeneous shell. The general cloaking condition is proposed from the wave relations, in contrast to the method of transformation optics. Spherical metamaterial cloaks with improved invisibility performance are achieved with optimal nonlinearity in transformation and core-shell ratio.
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