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. Author manuscript; available in PMC: 2018 Feb 12.
Published in final edited form as: Chem Rev. 2015 Feb 18;115(7):2483–2531. doi: 10.1021/cr500537t

Figure 14.

Figure 14

Protein detection using thermally reduced graphene oxide (TRGO) sheets decorated with gold nanoparticle–antibody conjugates. (A) Schematic of a TRGO FET. Anti-IgG is anchored to the TRGO sheet surface through AuNPs and functions as a specific recognition group for IgG binding. The electrical detection of protein binding is accomplished by FET and direct current measurements. (B) Sensor sensitivity (relative resistance change, %) versus IgG concentration. Dashed line represents the noise level from the buffer solution. Reprinted with permission from ref 124. Copyright 2010 Wiley.