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Improved SERS Performance from Au Nanopillar Arrays by Abridging the Pillar Tip Spacing by Ag Sputtering
Author(s) -
Huang Zhulin,
Meng Guowen,
Huang Qing,
Yang Yajun,
Zhu Chuhong,
Tang Chaolong
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201001179
Subject(s) - nanopillar , materials science , pillar , raman scattering , sputtering , optoelectronics , nanotechnology , raman spectroscopy , nanostructure , optics , thin film , physics , structural engineering , engineering
Ag‐capped Au nanopillar arrays on a resin supporter (see left upper figure), with a typical adjacent pillar tip gap of 10 nm, show obviously higher surface‐enhanced Raman scattering (SERS) sensitivity (right column in red) than that of the bare Au nanopillar array while using 10 n M R6G as probe molecules. The large‐area Ag‐capped Au nanopillar array has potential in trace detection of special chemicals.