Figure 1From: Label-free NIR-SERS discrimination and detection of foodborne bacteria by in situ synthesis of Ag colloidsAveraged Raman spectra of (a) E. coli pre-treated with Triton X-100, (b) Triton X-100 only (with Ag NPs), (c) E. coli in external mode, (d) E. coli in internal mode, (e) Ag NPs only (without E. coli and Triton X-100) and (f) E. coli cells without Ag NPs.Back to article page