Fabrication of Highly Rough Ag Nanobud Substrates and Surface-Enhanced Raman Scattering of -DNA Molecules
Figure 4
SERS spectra of six λ-DNA-AgNB samples (black) and two control samples (red and blue). The red spectrum was for 20 ng/μL λ-DNA solution on a clean glass substrate without AgNB. The blue spectrum was for the AgNB substrate itself. The laser power on the sample was 4.7 mW and the exposure time was 20 s.