Dr. Prafull Mathur Profile

Dr. Prafull Mathur

Senior Research Fellow at National Physical Lab

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Proceedings Article | 19 January 2006 Paper

Nanocomposite copolymer thin-film sensor for detection of escherichia coli

Prafull Mathur, S. Misra, Maneesha Yadav, S. Bawa, A. Gupta

Proceedings Volume 6036, 60361L (2006) https://doi.org/10.1117/12.637539

KEYWORDS: Sensors, Microorganisms, Thin films, Iron, Polymers, Nanocomposites, Polymer thin films, Glasses, Bacteria, Interfaces

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The majority of human diseases associated with microbial contaminated water are infectious in nature and the associated pathogen includes bacteria, fungi, viruses and protozoa. Water contaminated with bacteria can cause a number of food-borne and water-borne diseases. The waterborne transmission is highly effective means of spreading infectious agents to a large portion of population; this includes water and milk too. Waterborne infections are recognized as resulting either from ingestion of contaminated water or ice, food items, which have, came into contact with microbial contaminated water (occurring through bathing and recreational activities) etc. The detection of E. coli in food and water is normally carried out by culturing methods, which normally take 3-6 days, These methods are complicated and time-consuming in spite of their correctness, and cannot easily meet inspection demands on E. coli. Hence, an establishment of rapid detection methods for E. coli is strongly required. We have developed highly sensitive and cost effective solid sate sensors prepared from vacuum evaporated thin films of nanocomposite copolymer detection of presence of E. coli vapors in the air within 20 seconds. These sensors operate at room temperature. The preparation, optical, electrical, and structural characterization and behavioral acceptance test on the microorganism sensing properties of these sensors are reported here.

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