$. \[fig:prb0\](b): $\protect\lambda =000$ $nm$ (on resonance), $\protect\theta_o=00^o$ and the cylinder center placed at $(0000, 000)$ $nm$. \[fig:prb0\](c): $\protect\lambda =000$ $nm$ (off resonance), $\protect\theta_o=00^o$ and the cylinder center placed at $(0000, 000)$ $nm$. (From Ref. [@yo00c]). []{data-label="fig:prb0"}](prb0.eps){width="0