Delay-bandwidth and delay-loss limitations for cloaking of large objects

Abstract

Based on a simple model of ground-plane cloaking, we argue that the diffculty of cloaking is fundamentally limited by delay-loss and delaylbandwidth/size limitations that worsen as the size of the object to be cloaked increases relative to the wavelength. These considerations must be taken into account when scaling experimental cloaking demonstrations from wavelength-scale objects towards larger sizes, and suggest quantitative material/loss challenges in cloaking human-scale objects.

4 pages, 2 figures

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Cited by in corpus (14)

• Macroscopic Invisibility Cloaking of Visible Light
• Macroscopic Invisibility Cloak for Visible Light
• Broadening the Bandwidth of Metamaterial Cloaks with Non-Foster Metasurfaces
• Experimental demonstration of a free space cylindrical cloak without superluminal propagation
• Approaches to Three-Dimensional Transformation Optical Media Using Quasi-Conformal Coordinate Transformations
• Physical Bounds on Absorption and Scattering for Cloaked Sensors
• A diameter--bandwidth product limitation of isolated-object cloaking
• Invisibility cloaks in relativistic motion
• Ray trajectories for a spinning cosmic string and a manifestation of self-cloaking
• General scaling limitations of ground-plane and isolated-object cloaks
• Photorealistic ray tracing of free-space invisibility cloaks made of uniaxial dielectrics
• Fundamental Bounds on the Performance of Monochromatic Passive Cloaks
• Physical limitations on broadband invisibility based on fast-light media
• $\mathbb{T}$-Operator Limits on Optical Communication: Metaoptics, Computation, and Input-Output Transformations