The main idea behind the new proposed NDT technique is to explore the wide range of properties of bacterial cells, such as small dimension (some species have cells smaller than 1 m),
high penetration capacity, due to the production of biosurfactants, motility (due to the use of agella, gliding or electrophoretic motility), adherence, reproducibility and death, uorescence (natural or by addition of chemical compounds),
endothermic/exothermic properties, and susceptibility to electric and magnetic elds.