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O: Fachverband Oberflächenphysik

O 57: Plasmonics and Nanooptics II

O 57.10: Vortrag

Mittwoch, 2. April 2014, 18:15–18:30, GER 38

Metal plasmonic structures based on anodic aluminum oxide (AAO) and ultrathin alumina membranes (UTAM) for SERS and sensor applications — •Wenxin Wang, Yan Zheng, Ranjith Vellacheri, Lin Cheng, Chengliang Wang, Huaping Zhao, Ahmed Al-Haddad, and Yong Lei — Ilmenau University of Technology, Institute of Physics & IMN MacroNano* (ZIK) Prof. Schmidt-Str. 26, 98693 Ilmenau (Germany)

A variety of nano-structures can be fabricated by using anodic aluminum oxide template (AAO) and ultrathin alumina membranes (UTAM) through controlling the anodization voltage, time, and other parameters. With wet chemical etching process, pore size can be further adjusted. Additionally, dual even triple kind of pore sizes in a single template can be obtained if a third even fourth anodization process is applied, Here, we present Au, Ag , and Au-Ag composite nanostructured arrays prepared by the above-mentioned templates for enhanced Raman and Bio-sensing. The results show that these nanostructured arrays exhibit special absorption and senseing response to light, therefore implying the promising potencial of Au, Ag , andAu-Ag composite nanostructured arrays as suitable candidates for the applications of SERS substrate as well as bio-assay.