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. Author manuscript; available in PMC: 2018 Mar 15.
Published in final edited form as: Biosens Bioelectron. 2016 Mar 18;89(Pt 1):201–211. doi: 10.1016/j.bios.2016.03.044

Fig. 4.

Fig. 4

Optical biosensors for organic small-molecule detection based on nucleic acid-functionalized transition metal nanosheets. Reproduced with permission from Yuan et al. (2014b). Copyright 2013, Royal Society of Chemistry. (A) Schematic illustration of MnO2 nanosheet-based FRET aptasensing. (B) Schematic illustration of WS2 nanosheet-based fluorescence strategy for bleomycin detection. Reproduced with permission from Qin et al. (2015). Copyright 2015 Elsevier.