- Mechanical Engineering
Expected date of graduation:
This research proposes to study physical mechanisms behind electroactive biofilm’s re- sponse to hydrodynamic shear stress. A rotating disc electrode will be used to separate mass transfer (nutrient stress) from shear stress and use the direct signaling capabilities of electroactive bacteria to monitor biofilm development during growth through chronoamper- ometry and impedance measurements. Confocal laser scanning microscopy will be used to image the biofilm and calculate the height, porosity, and tortuosity of biofilms and correlate those results with the shear stress felt by the bacteria. The results of these measurements will be incorporated into a model derived from the elastic behavior of porous material to hydrodynamic intrusion. Finally real time-dependent sloughing behavior of the biofilm will be compared to those predicted by the model by filming the biofilm in a laminar flow fuel cell at optimal conditions found from the rotating disc experiments.
5 Recent Papers:
A-A. D. Jones, III. and A. D. Jones Jr.,(2014) Numerical Simulation of a Single-Wafer Atomic Layer Deposition Process, Materials Science and Semiconductor Processing, 21, 82-90