Regensburg 2013 – scientific programme

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O: Fachverband Oberflächenphysik

O 43: Plasmonics and Nanooptics IV

O 43.5: Talk

Wednesday, March 13, 2013, 11:30–11:45, H31

Fabrication of plasmonic Ag/Au arrays used as sensitive platform for glucose assay — •Wenxin Wang, Yan Zheng, Ahmed Shukur Hameed Al-Haddad, Yan Mi, Huaping Zhao, and Yong Lei — Fachgebiet 3D-Nanostrukturierung, Institut fuer Physik & IMN MacroNano (ZIK), Institute for Physics and IMN MacroNano (ZIK), Technische Universitaet Ilmenau, Prof. Schmidt Str. 26, 98693 Ilmenau, Germany.

A noble Ag/Au plasmonic array used for glucose detection based on enzyme-responsive was first obtained. Such kind of Ag arrays stands on the Au covered substrate which connected with glucose oxide (GOx) was prepared via mutli-steps physical vapor deposition combined with ultra-thin anodic alumina membranes. When the GOx from the substrate meeting with glucose, the produced H2O2 will etching origin Ag array into porous that will induce the variation of its optical property. Because plasmon resonance is sensitive to the structure, therefore with this new platform, even a little glucose can quickly detected from the shifting of extinction spectrum. We believe this king of glucose sensing platform has bright future in commercial application.