Title :
Surface-enhanced Raman scattering detection of chemical and biological agent simulants
Author :
Yan, Fei ; Wabuyele, Musundi B. ; Griffin, Guy D. ; Vass, Arpad A. ; Vo-Dinh, Tuan
Author_Institution :
Adv. Biomed. Sci. & Technol. Group, Oak Ridge Nat. Lab., TN, USA
Abstract :
Surface-enhanced Raman scattering spectra of chemical and biological agent simulants, such as dimethyl methylphonate, pinacolyl methylphosphonate, diethyl phosphoramidate, 2-chloroethyl ethylsulfide, bacillus globigii, erwinia herbicola, and bacillus thuringiensis were obtained from silver-oxide film-deposited substrates. Thin AgO films ranging in thickness from 50 to 250 nm were produced by chemical bath deposition onto glass slides. Further Raman intensity enhancements were noticed in UV irradiated surfaces due to photo-induced Ag nanocluster formation, which may provide a possible route to producing highly useful plasmonic sensors for the detection of chemical and biological agents upon visible-light illumination.
Keywords :
biological techniques; chemical sensors; dielectric thin films; organic compounds; silver compounds; surface enhanced Raman scattering; AgO; UV irradiated surfaces; biological agent detection; chemical agent detection; chemical bath deposition; plasmonic sensors; silver nanoclusters; surface enhanced Raman scattering; thin films; Biosensors; Chemical and biological sensors; Electrons; Frequency; Nanobioscience; Plasmons; Raman scattering; Rough surfaces; Silver; Surface roughness; Biological agent simulates; chemical agent simulants; plasmonic sensors; silver nanoclusters; surface-enhanced Raman scattering (SERS);
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2005.850993
