TY - DATA T1 - Multiple Surface Plasmon Modes for Gold/Silver Alloy Nanorods PY - 2009/05/05 AU - Hye-Mi Bok AU - Kevin L. Shuford AU - Sungwan Kim AU - Seong Kyu Kim AU - Sungho Park UR - https://acs.figshare.com/articles/journal_contribution/Multiple_Surface_Plasmon_Modes_for_Gold_Silver_Alloy_Nanorods/2859415 DO - 10.1021/la803900w.s001 L4 - https://ndownloader.figshare.com/files/4557241 KW - surface plasmon resonance KW - Multiple Surface Plasmon Modes KW - Aux KW - Ag portion KW - length KW - 300 nm KW - variation KW - anodized aluminum oxide templates KW - peak positions KW - electrochemical codeposition KW - nanorod KW - LSPR modes KW - bimetallic gold KW - LSPR mode N2 - Alloy nanorods consisting of bimetallic gold and silver are synthesized by employing the electrochemical codeposition of Au/Ag alloy materials into the pores of anodized aluminum oxide templates. This paper presents the variation of localized surface plasmon resonance (LSPR) modes of the Aux/Ag1−x alloy nanorods as a function of relative compositions of Au and Ag. Transverse and multiple longitudinal modes were observed when the length was longer than ca. 300 nm. For a given length, the transverse LSPR mode systematically blue-shifted as the Ag portion increased, while there was little variation in peak positions of the longitudinal LSPR modes. The optical properties of the Aux/Ag1−x alloy nanorods were calculated using the discrete dipole approximation and showed a good agreement with the experimental measurements. ER -