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. Author manuscript; available in PMC: 2011 Sep 21.
Published in final edited form as: Langmuir. 2010 Sep 21;26(18):15050–15056. doi: 10.1021/la102306z

Figure 1.

Figure 1

Strategy for amperometric SWNT forests immunosensors. On left in the SWNT forests assembly followed by the immunosensor that has been equilibrated with analyte protein PSA (center), along with biomaterials used in the assay protocol. On right, the immunosensor has been treated with enzyme-labeled secondary antibody: HRP-Ab2 (HRP = horseradish peroxidase). Detection involves immersing the sensor in an electrochemical cell containing buffer and mediator, applying voltage and injecting a small amount of hydrogen peroxide (H2O2) to activate HRP for amperometric reduction of H2O2.