title: Plasmonic coupling of bow tie antennas with Ag nanowire.
abstract: Ag nanowire with the receiving and transmitting Ag bow tie antenna pairs at its incident and emission ends was patterned on the SiO(2) substrate to realize an enhanced surface plasmon emission with a factor of 45 compared to the single Ag nanowire without antenna pairs. The receiving and transmitting bow tie antenna pairs enhanced the plasmon coupling and emission efficiencies of the Ag nanowire. And the maximum plasmon emission sensitively depended on the length of Ag nanowire, the arm length of bow tie antennas, and the incident angle of optical excitation. This enhanced plasmon emission was confirmed by finite-difference time-domain simulations and explored with analytical calculations using the impedance matching theory at optical frequency.
authors.affiliation: School of Physics, State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871, China.
authors.forename: Zheyu
authors.initials: Z
authors.lastname: Fang
authors.forename: Linran
authors.initials: L
authors.lastname: Fan
authors.forename: Chenfang
authors.initials: C
authors.lastname: Lin
authors.forename: Dai
authors.initials: D
authors.lastname: Zhang
authors.forename: Alfred J
authors.initials: AJ
authors.lastname: Meixner
authors.forename: Xing
authors.initials: X
authors.lastname: Zhu
mesh_terms: D003198:Computer Simulation; D008027:Light; D008422:Materials Testing; D008956:Models, Chemical; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012542:Scattering, Radiation; D012834:Silver / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D012834:Silver