Multiple Pass-Band Optical Left-Handed Metamaterials Based on Random Dendritic Cells

Left‐handed metamaterials (LHMs) composed of random dendritic cells demonstrate a multi‐band resonance and negative refractive index. A nano‐assembly approach is established to fabricate optical LHMs. Random nanostructures of silver dendritic cells are prepared and further fabricated into a sandwich‐like structure with a dielectric medium. The dentritic nano‐assembled configuration reveals a multi‐band resonance and a high intensity of the pass‐band at infrared frequencies, and can be facilely and cheaply prepared on a large‐scale of effective area. A nano‐assembly approach is established to fabricate optical left‐handed metamaterials composed of random nanostructures of silver dendritic cells (see image). Further fabrication into a large‐scale sandwich‐like structure with a dielectric medium gives rise to a multi‐band resonance and a high intensity of the pass‐band at infrared frequencies.