English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In this paper, we discover and proved that the $0$ to $R_1$ cylinder radialcoordinate transformation can not be used to make cylinder layerelectromagnetic EM cloak. Because in the $0$ to $R_1$ cylinder radialcoordinate transformation, the value area of the electric wave field $E_z(\rho,\phi,z)$ and magnetic wave field $H_z (\rho,\phi,z)$ are invariant. After$0$ to $R_1$ cylinder radial transformation,$\rho _q = R_1 + Q(\rho)$, $E_z(\rho _q,\phi,z) = E_z (\rho,\phi,z)$,$H_z (\rho _q,\phi,z) = H_z(\rho,\phi,z)$ . in the physical inner cylinder boundary, $E_z (R_1,\phi,z) \ne0$,$H_z (R_1,\phi,z) \ne 0$, The cylinder EM wave field will propagationpenetrate into the inner cylinder $\rho < R_1,\left| z \right| < \infty $.Therefore, the inner cylinder $\rho < R_1,\left| z \right| < \infty $ . cannot be cloaked. In many published papers on EM cylinder cloak, the $0$ to $R_1$cylinder radial transformation is wrongfully used for their EM cylinder layercloak.

The $0$ to $R_1$ cylinder radial coordinate transformation can not be used to make cylinder layer electromagnetic cloak