Title :
Organic nanocomposite sensor for detection of Escherichia coli
Author :
Mallya, Ashwini N. ; Sowmya, P. ; Ramamurthy, Praveen C.
Author_Institution :
Dept. of Mater. Eng., Indian Inst. of Sci., Bangalore, India
Abstract :
An organic nanocomposite-based sensor was fabricated to detect Escherichia coli (E. coli) in water. The organic molecule with receptor groups for detection was selected such that the receptor group would bind to the functional groups on the cell wall of the E. coli. The conductivity change of the sensor due to the interaction of E. coli is monitored. The sensor is tested for detecting E. coli cell concentrations of 109 CFU/ml to 108 CFU/ml. The morphology of the sensor film characterized using FESEM shows the presence of micron-size structures, the higher surface area for sensing resulting in a better response of the sensor.
Keywords :
biochemistry; biosensors; cellular biophysics; chemical sensors; microorganisms; microsensors; molecular biophysics; nanocomposites; nanofabrication; nanomedicine; nanosensors; organic compounds; scanning electron microscopy; surface morphology; Escherichia coli detection; FESEM; cell wall; conductivity change; micron-size structures; organic molecule; organic nanocomposite sensor fabrication; surface area; Biosensors; Carbon; Conductivity; Films; Immune system; Microorganisms; Monitoring; E. coli; chemiresistor; organic molecules; receptor groups;
Conference_Titel :
Emerging Electronics (ICEE), 2014 IEEE 2nd International Conference on
Print_ISBN :
978-1-4673-6527-7
DOI :
10.1109/ICEmElec.2014.7151202
