Figure 3

(a) Design and characterization of genosensor. The basic design and the generated genosensor are shown on the left. (b) Image of genosensor captured under a scanning electron microscope at 500 µM, showing the fingers of the aluminium electrode and the gaps between the electrodes. (c) HPM image of fabricated genosensor. (d) 3D image of fabricated genosensor before depositing aluminosilicate nanocomposites (inset figure shows front view) using 3D Profilometer. (e) Joss fly ash used to synthesize aluminosilicate nanocomposites. (f) Aluminosilicate extracted from joss fly ash (g) FETEM image of the nanocomposites. (h) Uniformly dispersed spherical shape of aluminosilicate nanocomposites under FESEM analysis. (i) Image of genosensor under HPM after deposition of nanocomposites. (j) 3D image of aluminosilicate nanocomposite modified genosensor illustrates the nanocomposites only attach on the SiO2 gap without disrupting the aluminium electrodes.