Integrated MOSFET-Embedded-Cantilever-Based Biosensor Characteristic for Detection of Anthrax Simulant...

In this work, MOSFET-embedded cantilevers are
configured as microbial sensors for detection of anthrax simulants,
Bacillus thuringiensis. Anthrax simulants attached to the
chemically treated gold-coated cantilever cause changes in the
MOSFET drain current due to the bending of the cantilever which
indicates the detection of anthrax simulant. Electrical properties
of the anthrax simulant are also responsible for the change in the
drain current. The test results suggest a detection range of 10 μL
of stimulant test solution (a suspension population of 1.3 × 107
colony-forming units/mL diluted in 40% ethanol and 60% deionized
water) with a linear response of 31 μA/μL.