[1] [1] LU L, YANG G, XIA Y. From pair to single: sole fluorophore for ratiometric sensing by dual-emitting quantum dots[J]. Anal Chem, 2014, 86(13): 6188-6191.

[2] [2] LIU H, YU P, DU D, et al. Rhodamine-based ratiometric fluorescence sensing for the detection of mercury(II) in aqueous solution [J]. Talanta, 2010, 81(1-2): 433-437.

[3] [3] LU H, YU C, ZHANG Y, et al. Efficient core shell structured dual response ratiometric fluorescence probe for determination of H2O2 and glucose via etching of silver nanoprisms [J]. Anal Chim Acta, 2019, 1048: 178-185.

[6] [6] MAO C, FLAVIN K G, WANG S, et al. Analysis of RNA-protein interactions by a microplate-based fluorescence anisotropy assay [J]. Anal Biochem, 2006, 350(2): 222-232.

[7] [7] SCHULLER J A, BARNARD E S, CAI W, et al. Plasmonics for extreme light concentration and manipulation [J]. Nat Mater, 2010, 9(3): 193-204.

[8] [8] HAES A J, VAN DUYNE R P. A unified view of propagating and localized surface plasmon resonance biosensors [J]. Anal Bioanal Chem, 2004, 379(7-8): 920-930.

[9] [9] LAKOWICZ J R, SHEN Y, D'AURIA S, et al. Radiative decay engineering. 2. Effects of Silver Island films on fluorescence intensity, lifetimes, and resonance energy transfer [J]. Anal Biochem, 2002, 301(2): 261-277.

[10] [10] LIU X-Q, LIU Q, CAO S-H, et al. Directional surface plasmon-coupled emission of CdTe quantum dots and its application in Hg(ii) sensing [J]. Analytical Methods, 2012, 4(12): 3956-3956.

[11] [11] AOUANI H, MAHBOUB O, BONOD N, et al. Bright unidirectional fluorescence emission of molecules in a nanoaperture with plasmonic corrugations [J]. Nano Lett. 2011, 11(2): 637-644.

[12] [12] VERCRUYSSE D, ZHENG X, SONNEFRAUD Y, et al. Directional fluorescence emission by individual V-antennas explained by mode expansion [J]. ACS Nano, 2014, 8(8): 8232-8241.

          [13] KOSAKO T, KADOYA Y, HOFMANN H F. Directional control of light by a nano-optical Yagi–Uda antenna [J]. Nature Photonics, 2010, 4(5): 312-315.

[13] [13] PENG B, LI Z, MUTLUGUN E, et al. Quantum dots on vertically aligned gold nanorod monolayer: plasmon enhanced fluorescence [J]. Nanoscale, 2014, 6(11): 5592-5598.

[14] [14] DEVILEZ A, STOUT B, BONOD N. Compact metallo-dielectric optical antenna for ultra directional and enhanced radiative emission [J]. ACS Nano, 2010, 4(6): 3390-3396.

[15] [15] YAN Y, ZENG Y, WU Y, et al. Ten-fold enhancement of ZnO thin film ultraviolet-luminescence by dielectric microsphere arrays [J]. Opt., Express, 2014, 22(19): 23552-23564.

[16] [16] REGMI R, BERTHELOT J, WINKLER P M, et al. All-Dielectric Silicon Nanogap Antennas To Enhance the Fluorescence of Single Molecules [J]. Nano Lett. 2016, 16(8): 5143-5151.

[18] [18] SCHWARTZ J J, STAVRAKIS S, QUAKE S R. Colloidal lenses allow high-temperature single-molecule imaging and improve fluorophore photostability [J]. Nat Nanotechnol, 2010, 5(2): 127-132.

[19] [19] MOROZOV S, GAIO M, MAIER S A, et al. Metal-Dielectric Parabolic Antenna for Directing Single Photons [J]. Nano Lett. 2018, 18(5): 3060-3065.

[20] [20] PAPASIMAKIS N, FEDOTOV V A, SAVINOV V, et al. Electromag-

          netic toroidal excitations in matter and free space [J]. Nat Mater, 2016, 15(3): 263-271.