We discuss tunability and nonlinear properties of metamaterials operating at microwave and optical frequencies. We also study the fundamental nonlinear effects in metal-dielectric waveguides supporting surface plasmon polaritons, and discuss nanofocusing
Ling LiuPing GaoKaipeng LiuWeijie KongZeyu ZhaoMingbo PuChangtao WangXiangang Luo
Yu ZhuXiaoyong HuHong YangQihuang Gong