Fabrication of Metamaterials Based on Gold Dendritic Cells

We demonstrate a visible light frequencies metamaterials (MMs) composed of disordered dendritic cells, and a novel bottom-up approach to fabricate the MMs using chemical method. When the diameter of the cell is about 500 nm, the as-prepared gold dendritic nanostructural array exhibits passbands at wavelength of 470, 540 and 670 nm, respectively. The MMs also realize slab focusing effect at visible wavelength. It would be significant to accelerate the development of visible frequencies MMs.