Detailed study of surface-enhanced Raman scattering from metallic nanosculptured thin films and their potential for biosensing

作者：Shalabney Atef^*; Khare Chinmay; Bauer Jens; Rauschenbach Bernd; Abdulhalim I

来源：Journal of Nanophotonics, 2012, 6(1): 061605.

DOI：10.1117/1.JNP.6.061605

• glancing angle deposition
• surface-enhanced Raman scattering
• Raman enhancement factor
• sculptured thin films

Surface-enhanced Raman scattering (SERS) from silver nanosculptured thin films (STF) was studied in detail for biosensing. The influences of the nanostructures%26apos; sizes, topology, the substrate features, and the preparation conditions on the enhancement were examined. Enhancement factors on the order of 10(7) were obtained from silver nanorods deposited on bare silicon substrates with respect to their dense counterparts, using 4-aminotheophenol (4-ATP) for the Raman emission. The low detection limit that can be achieved with STFs is below 1 mu g/lit of the probe molecule 4-ATP in Ethanol solution. Theoretical modeling based on a single small spheroidal nanoparticle helped in explaining the main properties of SERS from STFs. Stability of the films was noticed over a period of one year without significant degradation. c 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.JNP.6.061605]

• 出版日期2012-9-18
• 单位南阳理工学院