Iron Oxide–Gold Composite Nanoparticles and Nano-Gap Junctions …
265
Fig. 7 a UV-vis spectra of
gold–iron oxide nanospheres
seeded reaction from original
to 4xs seeded. b Weight
percent loading of increased
seeded reactions. (Color
figure online)
Figure 8 provides a higher magnification of the iron oxide–gold composite structure to illustrate that even after four seeded treatments, the integrity of the nanoparticles is preserved. Figure 8a, c further confirms the gold loading of the final seeded
particles showing the presence of gold and energy-dispersive X-ray analysis (EDS)
mapping of the composite nanostructures. Once iron oxide–gold-decorated nanoparticles were found to be reproducibly synthesized, the composite structures were
explored as possible SERS reporter of a model analyte.
Surface-Enhanced Raman Spectroscopy (SERS) Studies
Surface-enhanced Raman scattering (SERS) is a powerful analytical tool employed
for detection of trace amount of chemical and biological entities [3, 5, 6, 11, 24,
265
Fig. 7 a UV-vis spectra of
gold–iron oxide nanospheres
seeded reaction from original
to 4xs seeded. b Weight
percent loading of increased
seeded reactions. (Color
figure online)
Figure 8 provides a higher magnification of the iron oxide–gold composite structure to illustrate that even after four seeded treatments, the integrity of the nanoparticles is preserved. Figure 8a, c further confirms the gold loading of the final seeded
particles showing the presence of gold and energy-dispersive X-ray analysis (EDS)
mapping of the composite nanostructures. Once iron oxide–gold-decorated nanoparticles were found to be reproducibly synthesized, the composite structures were
explored as possible SERS reporter of a model analyte.
Surface-Enhanced Raman Spectroscopy (SERS) Studies
Surface-enhanced Raman scattering (SERS) is a powerful analytical tool employed
for detection of trace amount of chemical and biological entities [3, 5, 6, 11, 24,