版象 Nanjing University Plasmonics and Metamaterial Tao Li taoli@nju.edu.cn Nat.Lab.of Solid State Microstructures Department of Materials Science and Engineering Nanjing University Dielectrie Superlattice Laboratory Nat.Lab.Microstructures Dr.Tao Li taoli@nju.edu.cn
Nanjing University Tao Li taoli@ j n u.edu.cn Nat. Lab. of Solid State Microstructures Department of Materials Science and Engineering Nanjing University Nanjing University Dielectric Superlattice Laboratory Nat. Lab. Microstructures Dr. Tao Li taoli@nju.edu.cn
Nanjing University 2 Outline Concepts Basic principles Surface pPlasmon Metamaterial Summary Dielectric Superlatice Laboratory Nat. Lab. Microstructures Dr. Tao Li taoli@nju.edu.cn
Nanjing University y C t oncep s y Basic principles y Surface Plasmon y Metamaterial y Summary Dielectric Superlattice Laboratory Nat. Lab. Microstructures Dr. Tao Li taoli@nju.edu.cn
版象 Nanjing University Optical Properties Light in Condensed Matters Condensed Matter Dielectrie Superlattice Laboratory Nat.Lab.Microstructures Dr.Tao Li taoli@nju.edu.cn
Nanjing University Light Dielectric Superlattice Laboratory Nat. Lab. Microstructures Dr. Tao Li taoli@nju.edu.cn
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.cn
Nanjing 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
Nanjing University Concepts Metamaterial METAMATERIAL SOLID,CYSTAL atom artificial atom Notice: >This artificial material (atom)is not exist naturally! “meta'”i迟“beyond'" >The property is with respect to the EM wave, so a key point is the unit cell is sub-wavelength. Light cannot“see”the structure Dielectrie Superlattice Laboratory Nat.Lab.Microstructures Dr.Tao Li taoli@nju.edu.cn
Nanjing University METAMATERIAL SOLID, CYSTAL atom artificial atom Notice: ¾This artificial material (atom) is not exist naturally! “meta” is “beyond” ¾Th t i ith t t th EM The property is with respect to the EM wave, so a key point is the unit cell is sub-wavelength. Light cannot “see” the structure Dielectric Superlattice Laboratory Nat. Lab. Microstructures Dr. Tao Li taoli@nju.edu.cn Light cannot see the structure