Hexagonally Ordered Arrays of Elliptical Silicon Nanowires Featured by Holographic Lithography for SERS Applications

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 303
  • Download : 0
Surface-enhanced Raman scattering (SERS)—of which the enhancement depends on the type, size, roughness and shape of metal nanoparticles and the distance between them—is a powerful strategy for sensing applications. Here, a novel, highly uniform and tunable hybrid SERS substrate has been achieved via prism holographic lithography (HL), ion-milling, catalytic wet-etching process, and electron-beam evaporation. The triply-split Au hole arrays, which can be fabricated using HL-featured structures as milling masks, act as the silicon (Si) wafer etching catalyst in a reaction solution to fabricate well-ordered silicon nanowire (SiNW) arrays. After removing the polymeric mask and metal thin film, the Au thick film is highly-anisotropically deposited on the hexagonally ordered triangularly coordinated elliptical SiNW arrays. This hybrid substrate shows tunable SERS activities according to the catalytic wet etching times causing different vertical gap distances. Moreover, highly intensified SERS signals can be achieved deriving from lateral interparticle coupling compared to the circular SiNW arrays with the good homogeneity.
Publisher
한국화학공학회
Issue Date
2012-04-26
Language
KOR
Citation

한국화학공학회 춘계학술발표회, v.18, no.1

URI
http://hdl.handle.net/10203/171956
Appears in Collection
CBE-Conference Papers(학술회의논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0