We investigate three-dimensional metamaterials based on stacked carbon nanotube (CNT) fishnet structures. The fishnet structures are realized by spray coating with CNT pigment inks. Organic materials allow to adjust the area resistance of the conductive layers for optimum broad-band design. An example for a 2D-metamaterial structure is the fishnet structure consisting of a homogeneous dielectric substrate plate cladded by two consecutive fishnet structures on both sides. A lumped element equivalent circuit model of a fishnet metamaterial cell is presented. Numerical and experimental studies are pursued in this contribution to investigate fishnet metamaterial using nano pigment inks. The use of lossy thin films enhances the bandwidth of negative refractive index for fishnet structures and the ability to tune the sheet resistance allows for an increased flexibility in the design of metamaterial structures.     «

We investigate three-dimensional metamaterials based on stacked carbon nanotube (CNT) fishnet structures. The fishnet structures are realized by spray coating with CNT pigment inks. Organic materials allow to adjust the area resistance of the conductive layers for optimum broad-band design. An example for a 2D-metamaterial structure is the fishnet structure consisting of a homogeneous dielectric substrate plate cladded by two consecutive fishnet structures on both sides. A lumped element equival...     »