Guo Shy-Hauh, Britti Dominic G, Heetderks Julia J, Kan Hung-Chih, Phaneuf Raymond J
Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742, USA.
Nano Lett. 2009 Jul;9(7):2666-70. doi: 10.1021/nl901112h.
We explore the role of coupling between silver nanowires and an underlying silver film in fluorescence enhancement from proximal molecules. Variation of the thickness of an oxide layer separating nanowire arrays from the Ag film causes an alternation in the incident light polarization that produces the highest enhancement. Finite difference time domain calculations show that it results from an alternation of regions of high field above and between nanowires as the spacer thickness is increased.
我们探究了银纳米线与底层银膜之间的耦合在近端分子荧光增强中的作用。分隔纳米线阵列与银膜的氧化层厚度变化会导致产生最高增强效果的入射光偏振发生改变。时域有限差分计算表明，这是由于随着间隔层厚度增加，纳米线之上和之间的高场区域发生了改变所致。
