Quantitative Surface Plasmon Interferometry via Upconversion Photoluminescence Mapping

作     者：Anxiang Yin Hao Jing Zhan Wu Qiyuan He Yiliu Wang Zhaoyang Lin Yuan Liu Mengning Ding Xu Xu Zhe Fei Jianhui Jiang Yu Huang Xiangfeng Duan 

作者机构：Department of Chemistry and BiochemistryUniversity of CaliforniaLos AngelesCalifornia 90095USA School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100008China Department of Materials Science and EngineeringUniversity of CaliforniaLos AngelesCalifornia 90095USA State Key Laboratory for Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China Department of Physics&AstronomyIowa State UniversityAmesIowa 50011USA California NanoSystems InstituteUniversity of CaliforniaLos AngelesCalifornia 90095USA 

出 版 物：《Research》 (研究（英文）)

年 卷 期：2019年第2019卷第1期

页      面：551-562页

核心收录：

学科分类：07[理学] 070204[理学-等离子体物理] 0702[理学-物理学] 

基　　金：X.D.acknowledge the financial support from the National Science Foundation through grant No.1610361. 

主　　题：visible dielectric measurable 

摘      要：Direct far-field visualization and characterization of surface plasmon polaritons(SPPs)are of great importance for fundamental studies and technological applications.To probe the evanescently confined plasmon fields,one usually requires advanced near-field techniques,which is typically not applicable for real-time,high-throughput detecting or mapping of SPPs in complicated environments.Here,we report the utilization of rare-earth-doped nanoparticles to quantitatively upconvert invisible,evanescently confined SPPs into visible photoluminescence emissions for direct far-field visualization of SPPs in a complicated environment.The observed interference fringes between the SPPs and the coherent incident light at the metal surface provide a quantitative measurement of the SPP wavelength and the SPP propagating length and the local dielectric environments.It thus creates a new signaling pathway to sensitively transduce the local dielectric environment change into interference periodicity variation,enabling a new design of directly measurable,spectrometer-free optical rulers for rapid,ultrasensitive label-free detection of various biomolecules,including streptavidin and prostate-specific antigen,down to the femtomolar level.