Nanjing University 2 反常色散实现负折射 00 MM结构 空 y=0,,= 0 2a k Ag air Ag Si,Na 300 0 light line Wave vector RefB)[107 m-1] Ag/SigN4/Ag 400 A Input NI region 1 700 Au/SigN4/Ag t=50nm1550 0 0.04 0.0 0.12 Output B(nm) negative refraction (92<0) Output Slit p positive w2 W1 refraction (p>0) 5um =685nm =514nm Dielectric Superlattice Laboratory Science316,430(2007) Nat.Lab.Microstructures Dr.Tao Li taoli@nju.edu.cnDielectric Superlattice Laboratory Nat. Lab. Microstructures Dr. Tao Li taoli@nju.edu.cn Nanjing University MIM结构 0, 0 p g v v k k        Science 316, 430 (2007)