Space wave channeling enabled by conformal transformation optics

Experimental Verification of Shape‐Independent Surface Cloak Enabled by Nihility Transformation Optics

“…Mohammad Hosein Fakheri, Atefeh Ashrafian, Hooman Barati Sedeh, and Ali Abdolali* DOI: 10.1002/adom.202100816 methods have been introduced such as invisibility cloaks, [1,[3][4][5][6] illusion systems, [7][8][9] field concentrators, [10,11] field rotators, [12] beam steering application, [13][14][15][16] and radar absorbing structures. [17] Following the idea of coordinate transformation, several other exotic functionalities have been proposed in other physics such as acoustics, [18,19] thermodynamics, [20,21] and matter waves.…”

“…[ 1 ] As it was proposed by Pendry et al., the core idea of TO is to create a link between Maxwell's equations described in one coordinate system (named as virtual domain) and their counterparts in another predefined coordinate system (dubbed as physical domain) via a mathematical expression that relates the constitutive parameters of the virtual space to the physical one, giving rise to light propagation in a desired manner. [ 2 ] As a result of this approach, several devices that were deemed impossible to be obtained with conventional methods have been introduced such as invisibility cloaks, [ 1,3–6 ] illusion systems, [ 7–9 ] field concentrators, [ 10,11 ] field rotators, [ 12 ] beam steering application, [ 13–16 ] and radar absorbing structures. [ 17 ] Following the idea of coordinate transformation, several other exotic functionalities have been proposed in other physics such as acoustics, [ 18,19 ] thermodynamics, [ 20,21 ] and matter waves.…”