Plasmon-mediated radiative energy transfer across a silver nanowire array via resonant transmission and subwavelength imaging.
Efficient plasmon-mediated excitation energy transfer between the CdSe/ZnS semiconductor quantum dots (QDs) across the silver nanowire array up to 560 nm in length is observed. The subwavelength imaging and spectral response of the silver nanowire arrays with near-field point-source excitations are revealed by theoretical simulations. Our studies demonstrate three advantages of the nanosystem: efficient exciton-plasmon conversion at the input side of the array through near-field strong coupling, directional waveguidance and resonant transmission via half-wave plasmon modes of the nanowire array, and subwavelength imaging at the output side of the array. These advantages allow a long-range radiative excitation energy transfer with a high efficiency and a good directionality.
Zhou
Zhang-Kai
ZK
Department of Physics, Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, People's Republic of China.
Li
Min
M
Yang
Zhong-Jian
ZJ
Peng
Xiao-Niu
XN
Su
Xiong-Rui
XR
Zhang
Zong-Suo
ZS
Li
Jian-Bo
JB
Kim
Nam-Chol
NC
Yu
Xue-Feng
XF
Zhou
Li
L
Hao
Zhong-Hua
ZH
Wang
Qu-Quan
QQ
D000042:Absorption; D019187:Cadmium Compounds / Q000737:chemistry; D004735:Energy Transfer; D036103:Nanotechnology / Q000295:instrumentation*; D053770:Nanowires / Q000737:chemistry*; D045663:Quantum Dots; D018036:Selenium Compounds / Q000737:chemistry; D012666:Semiconductors; D012834:Silver / Q000737:chemistry*; D013440:Sulfides / Q000737:chemistry; D017967:Zinc Compounds / Q000737:chemistry
D019187:Cadmium Compounds; D018036:Selenium Compounds; D013440:Sulfides; D017967:Zinc Compounds; D012834:Silver; C058667:cadmium selenide; C031238:zinc sulfide