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Impedance sensors embedded in culture media for early detection of bacteria growth
- Source :
- Lecture Notes in Electrical Engineering ISBN: 9783319550763, Sensors
- Publication Year :
- 2018
- Publisher :
- Springer Verlag, 2018.
-
Abstract
- In this work, the ability of an impedance sensor to rapidly detect bacteria growth in a culture medium has been investigated. A test configuration with two electrodes embedded in a Petri dish has been proposed. Impedances corresponding to a sterile medium and one inoculated with bacteria have been measured and compared during the growth process. Remarkable differences have been observed in the time evolutions of the two behaviors. In particular, impedance behavior measured at 100 Hz allows such achievement after only 1 h. An equivalent circuit of the measured impedances have been proposed. Considerations regarding the effects of the bacteria growth on the components describing the electrode-medium interface have been reported. The variations of these elements have been identified as the more significant for the early detection. From these promising results, improved configurations consisting of a matrix of electrodes can be proposed for localized and rapid detection by means of automated analysis systems.
- Subjects :
- Materials science
Petri dish
010401 analytical chemistry
Process (computing)
Early detection
02 engineering and technology
Bacterial growth
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
law.invention
Matrix (chemical analysis)
law
Electrode
Equivalent circuit
0210 nano-technology
Biological system
Electrical impedance
Subjects
Details
- Language :
- English
- ISBN :
- 978-3-319-55076-3
- ISBNs :
- 9783319550763
- Database :
- OpenAIRE
- Journal :
- Lecture Notes in Electrical Engineering ISBN: 9783319550763, Sensors
- Accession number :
- edsair.doi.dedup.....90ef4571fd59e19ee8a6221f9b983653