Invisibility in waveguides





          Another geometry where \(R=0\) and \(T=1\). More details [PDF].




         In the example below, we played with the height of the thin chimneys. More details [PDF].





   


   

Plasmonic and metamaterials

We consider the problem

\begin{array}{|rl} -\mbox{div}(\sigma\nabla u)=f &\mbox{ in }\Omega\\ u=0&\mbox{ on }\partial\Omega \end{array}

with a sign changing \(\sigma\).



             




             



          





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