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. Author manuscript; available in PMC: 2022 Nov 1.
Published in final edited form as: Adv Funct Mater. 2021 Nov 25;32(9):2107671. doi: 10.1002/adfm.202107671

Figure 6.

Figure 6.

3D printed biosensors for rapid and sensitive pathogen detection. a–c) Schematics showing AJP of biosensor for COVID-19 antibody detection in seconds.[33] The biosensor consisted of a 10 × 10 micropillar array coated with viral antigens as the working electrode. d,e) Optical image and SEM of the sensor depicted in (a), respectively. The SEM images show top view of the 3D printed micropillar array. f) Plots showing the sensing of spike S1 antibodies with repeated regeneration. The charge transfer resistance varies with the antibody concentration. For control studies, rabbit serum (RS) and fetal bovine serum (FBS) solution were used.[33] Reproduced with permission.[33] Copyright 2020, Wiley-VCH.