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. Author manuscript; available in PMC: 2012 Mar 15.
Published in final edited form as: Anal Chem. 2011 Feb 15;83(6):2119–2124. doi: 10.1021/ac102932d

Fig. 5.

Fig. 5

Detection of label-free peptide and protein using a SERS-active monolith section. (A) 10 µM bradykinin and (B) 1 µM cytochrome c. Raman spectra measured from 25 µL droplets of the same sample solutions enhanced with Ag colloid are also shown for comparison. Multiple characteristic peaks are amplified using the monolith sensor.