Nanjing University Concepts Plasmonics SOLID,LIQUID,GAS PLASMA atom or decoupled positive and molecule negative charges I free electron gas 1 1 metal Positive charge background Jellium model I I I Collective oscillation of free elctrons>quanta h I 1 Plasmonics Plasmon Dielectric Superlattice Laboratory Nat.Lab.Microstructures Dr.Tao Li taoli@nju.edu.cnNanjing University + SOLID, LIQUID, GAS PLASMA - + - + - - + atom or molecule decoupled positive and negative charges + - Positive charge background free electron gas metal Jellium model Collective oscillation of free elctronsÆ quanta hωq Plasmonics Plasmon Dielectric Superlattice Laboratory Nat. Lab. Microstructures Dr. Tao Li taoli@nju.edu.cn