Figure 9.
Four pictures with different magnification taken from the sensors under the electron scanning microscope. In (A) the picture shows the reference U-Shaped sensor without functionalization under a scale of 500 μm. In (B) the U-Shaped sensor functionalized in a suspension of 108 CFU/mL of Escherichia coli with a scale of 300 μm. The small dot are the adhered bacteria. (C) Bacteria seen at the sensor surface under a scale of 50 μm. (D) Under a scale of 20 μm, it is possible to notice individual bacteria distributed along the sensor surface. Each bacterium measures about 2 µm in length by 1 µm in diameter.