OPTICAL AND DIELECTRIC-PROPERTIES OF PARTIALLY RESONANT COMPOSITES

We analyze the two-dimensional potential around a coated cylinder plac ed in a nonuniform field. In two special cases the system behaves as i f the core of the cylinder were enlarged and the shell absent. These a re when the shell dielectric constant is the negative of either the co re dielectric constant or the matrix dielectric constant. When the she ll dielectric constant has a small imaginary part, the field can exhib it large fluctuations which remain localized near the surface of the c oated cylinder.