TY - JOUR T1 - Plasma-induced formation of Ag nanodots for ultra-high-enhancement surface-enhanced Raman scattering substrates. AU - Li,Zhiyong, AU - Tong,William M, AU - Stickle,William F, AU - Neiman,David L, AU - Williams,R Stanley, AU - Hunter,Luke L, AU - Talin,A Alec, AU - Li,D, AU - Brueck,S R J, Y1 - 2007/03/27/ PY - 2007/3/28/pubmed PY - 2007/6/15/medline PY - 2007/3/28/entrez SP - 5135 EP - 8 JF - Langmuir : the ACS journal of surfaces and colloids JO - Langmuir VL - 23 IS - 9 N2 - We report here plasma-induced formation of Ag nanostructures for surface-enhanced Raman scattering (SERS) applications. An array of uniform Ag patterned structures of 150 nm diameter was first fabricated on a silicon substrate with imprint lithography; then the substrate was further treated with an oxygen plasma to fracture the patterned structures into clusters of smaller, interconnected, closely packed Ag nanoparticles (20-60 nm) and redeposited Ag nanodots (approximately 10 nm) between the clusters. The substrate thus formed had a uniform ultrahigh SERS enhancement factor (1010) over the entire substrate for 4-mercaptophenol molecules. By comparison, Au patterned structures fabricated with the same method did not undergo such a morphological change after the plasma treatment and showed no enhancement of Raman scattering. SN - 0743-7463 UR - https://www.unboundmedicine.com/medline/citation/17385901/Plasma_induced_formation_of_Ag_nanodots_for_ultra_high_enhancement_surface_enhanced_Raman_scattering_substrates_ L2 - https://doi.org/10.1021/la063688n DB - PRIME DP - Unbound Medicine ER -