title: High-precision measurement-based correlation studies among atomic force microscopy, Rayleigh scattering, and surface-enhanced Raman scattering at the single-molecule level.
abstract: We investigated the correlations among the structure, Rayleigh scattering, and single-molecule surface-enhanced Raman scattering (SERS) of DNA-tethered Au-Ag core-shell nanoparticles, especially in dimer and trimer forms. For the optimal correlation measurements, accurate information on the position of the nanoparticle is crucial for locating the nanoparticle at the center of the excitation source for the optical measurements. To achieve this, we developed a multistep correlation strategy that enables us to unambiguously correlate the AFM images with optical images within a few nanometers. We also newly defined the correlation accuracy in this paper as a useful concept for the correlation measurements. With this reliable correlation accuracy, we performed various statistical analyses to thoroughly elucidate the relationships between particle structure, Rayleigh scattering and SERS in terms of the incident polarization and scattering intensity ratio.
authors: Laboratory for Advanced Molecular Probing (LAMP), Research Center for Convergence Nanotechnology, Korea Research Institute of Chemical Technology, Daejeon 305-600, South Korea.
authors: Hae Mi
authors: HM
authors: Lee
authors: Jung-Hoon
authors: JH
authors: Lee
authors: Hyung Min
authors: HM
authors: Kim
authors: Seung Min
authors: SM
authors: Jin
authors: Hyo Sun
authors: HS
authors: Park
authors: Jwa-Min
authors: JM
authors: Nam
authors: Yung Doug
authors: YD
authors: Suh