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. Author manuscript; available in PMC: 2016 Nov 15.
Published in final edited form as: Biosens Bioelectron. 2016 May 6;85:198–204. doi: 10.1016/j.bios.2016.05.019

Figure 2.

Figure 2

(a) PDA microtubes fluorescence quenching upon gradual addition of DNA@Au NR. (b) Plot of fluorescence-quenching ratios at 640 nm for the microtube upon gradual addition of DNA@AuNR. F0 and F represent the emission intensity at 640 nm from the body of PDA microtube before and after hybridization.