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. Author manuscript; available in PMC: 2014 May 15.
Published in final edited form as: IEEE J Sel Top Quantum Electron. 2008 January-February;14(1):198–205. doi: 10.1109/JSTQE.2007.914738

Fig. 4.

Fig. 4

(a) Operating principe of an SERS MS nanoprobe. (b) Strong SERS signal is observed when the MS probe is in the hairpin conformation (closed state). (c) Upon hybridization with the target (open state), the SERS signal is diminished.