Silicon nanowires coated with silver nanostructures as ultrasensitive interfaces for surface-enhanced Raman spectroscopy.
Silver nanoparticles (Ag NPs) were chemically deposited on silicon nanowires (SiNWs), prepared using the vapor-liquid-solid (VLS) growth mechanism, using an in situ electroless metal deposition technique. The resulting SiNWs/Ag NPs composite interfaces showed large Raman scattering enhancement for rhodamine 6G (R6G) with a detection limit of 10(-14) M and an enhancement factor of 2.3 x 10(8). This large enhancement factor was attributed to the presence of "hot" spots on the SiNWs/Ag NPs substrate.
Galopin
Elisabeth
E
Institut de Recherche Interdisciplinaire (IRI, USR-CNRS 3078) and Institut d'Electronique, de Microelectronique et de Nanotechnologie (IEMN, UMR-CNRS 8520), Cite Scientifique, Avenue Poincare - BP 60069, 59652 Villeneuve d'Ascq, France.
Barbillat
Jacques
J
Coffinier
Yannick
Y
Szunerits
Sabine
S
Patriarche
Gilles
G
Boukherroub
Rabah
R
D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning / Q000379:methods; D046529:Microscopy, Electron, Transmission; D036103:Nanotechnology / Q000379:methods; D053770:Nanowires / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D012235:Rhodamines / Q000737:chemistry; D012542:Scattering, Radiation; D012825:Silicon / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013499:Surface Properties
D010087:Oxides; D012235:Rhodamines; C026188:rhodamine 6G; D012834:Silver; D012825:Silicon